./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.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 81fdc30d5ae06f4aa0f8c63596e14b99f6ff7b82b4febb712a46f5be02949bcd --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 14:27:50,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 14:27:50,982 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 14:27:50,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 14:27:50,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 14:27:51,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 14:27:51,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 14:27:51,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 14:27:51,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 14:27:51,015 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 14:27:51,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 14:27:51,015 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 14:27:51,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 14:27:51,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 14:27:51,015 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 14:27:51,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 14:27:51,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 14:27:51,016 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 14:27:51,017 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 14:27:51,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:27:51,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:27:51,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:27:51,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:27:51,018 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 14:27:51,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:27:51,018 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:27:51,018 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:27:51,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:27:51,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 14:27:51,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 14:27:51,020 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 14:27:51,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 14:27:51,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 14:27:51,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 14:27:51,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 14:27:51,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 14:27:51,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 14:27:51,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 14:27:51,020 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 -> 81fdc30d5ae06f4aa0f8c63596e14b99f6ff7b82b4febb712a46f5be02949bcd [2025-01-09 14:27:51,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 14:27:51,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 14:27:51,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 14:27:51,274 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 14:27:51,274 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 14:27:51,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i [2025-01-09 14:27:52,470 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5628f8e42/02c15f3d9c8b4c008f94e4891a112f6c/FLAG84d9b09bf [2025-01-09 14:27:52,812 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 14:27:52,815 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i [2025-01-09 14:27:52,829 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5628f8e42/02c15f3d9c8b4c008f94e4891a112f6c/FLAG84d9b09bf [2025-01-09 14:27:53,050 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5628f8e42/02c15f3d9c8b4c008f94e4891a112f6c [2025-01-09 14:27:53,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 14:27:53,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 14:27:53,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 14:27:53,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 14:27:53,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 14:27:53,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,067 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468b11bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53, skipping insertion in model container [2025-01-09 14:27:53,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,101 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 14:27:53,200 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i[916,929] [2025-01-09 14:27:53,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:27:53,341 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 14:27:53,352 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i[916,929] [2025-01-09 14:27:53,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:27:53,439 INFO L204 MainTranslator]: Completed translation [2025-01-09 14:27:53,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53 WrapperNode [2025-01-09 14:27:53,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 14:27:53,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 14:27:53,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 14:27:53,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 14:27:53,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,500 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 447 [2025-01-09 14:27:53,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 14:27:53,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 14:27:53,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 14:27:53,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 14:27:53,514 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,529 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,562 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 14:27:53,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,581 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 14:27:53,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 14:27:53,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 14:27:53,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 14:27:53,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (1/1) ... [2025-01-09 14:27:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:27:53,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:27:53,627 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 14:27:53,632 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 14:27:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 14:27:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 14:27:53,643 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 14:27:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 14:27:53,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 14:27:53,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 14:27:53,706 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 14:27:53,707 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 14:27:54,260 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2025-01-09 14:27:54,260 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 14:27:54,268 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 14:27:54,268 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 14:27:54,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:27:54 BoogieIcfgContainer [2025-01-09 14:27:54,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 14:27:54,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 14:27:54,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 14:27:54,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 14:27:54,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:27:53" (1/3) ... [2025-01-09 14:27:54,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59341271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:27:54, skipping insertion in model container [2025-01-09 14:27:54,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:27:53" (2/3) ... [2025-01-09 14:27:54,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59341271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:27:54, skipping insertion in model container [2025-01-09 14:27:54,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:27:54" (3/3) ... [2025-01-09 14:27:54,302 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-74.i [2025-01-09 14:27:54,312 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 14:27:54,314 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-74.i that has 2 procedures, 191 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 14:27:54,361 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 14:27:54,369 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;@1756c832, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 14:27:54,369 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 14:27:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 143 states have (on average 1.4895104895104896) internal successors, (213), 144 states have internal predecessors, (213), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-01-09 14:27:54,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2025-01-09 14:27:54,384 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:27:54,384 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:27:54,385 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:27:54,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:27:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1456204272, now seen corresponding path program 1 times [2025-01-09 14:27:54,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:27:54,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856261522] [2025-01-09 14:27:54,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:27:54,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:27:54,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-01-09 14:27:54,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-01-09 14:27:54,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:27:54,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:27:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2025-01-09 14:27:54,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:27:54,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856261522] [2025-01-09 14:27:54,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856261522] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:27:54,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14462782] [2025-01-09 14:27:54,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:27:54,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:27:54,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:27:54,855 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 14:27:54,856 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 14:27:54,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-01-09 14:27:55,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-01-09 14:27:55,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:27:55,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:27:55,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 14:27:55,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:27:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2025-01-09 14:27:55,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 14:27:55,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14462782] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:27:55,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:27:55,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 14:27:55,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105816353] [2025-01-09 14:27:55,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:27:55,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 14:27:55,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:27:55,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 14:27:55,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 14:27:55,141 INFO L87 Difference]: Start difference. First operand has 191 states, 143 states have (on average 1.4895104895104896) internal successors, (213), 144 states have internal predecessors, (213), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2025-01-09 14:27:55,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:27:55,168 INFO L93 Difference]: Finished difference Result 376 states and 646 transitions. [2025-01-09 14:27:55,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 14:27:55,170 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) Word has length 310 [2025-01-09 14:27:55,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:27:55,174 INFO L225 Difference]: With dead ends: 376 [2025-01-09 14:27:55,175 INFO L226 Difference]: Without dead ends: 188 [2025-01-09 14:27:55,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 311 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 14:27:55,179 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:27:55,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:27:55,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-01-09 14:27:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2025-01-09 14:27:55,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 141 states have (on average 1.475177304964539) internal successors, (208), 141 states have internal predecessors, (208), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-01-09 14:27:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 298 transitions. [2025-01-09 14:27:55,213 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 298 transitions. Word has length 310 [2025-01-09 14:27:55,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:27:55,213 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 298 transitions. [2025-01-09 14:27:55,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2025-01-09 14:27:55,213 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 298 transitions. [2025-01-09 14:27:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2025-01-09 14:27:55,217 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:27:55,218 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:27:55,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 14:27:55,418 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 14:27:55,418 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:27:55,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:27:55,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1170731798, now seen corresponding path program 1 times [2025-01-09 14:27:55,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:27:55,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599749177] [2025-01-09 14:27:55,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:27:55,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:27:55,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-01-09 14:27:55,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-01-09 14:27:55,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:27:55,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:27:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:27:55,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:27:55,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599749177] [2025-01-09 14:27:55,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599749177] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:27:55,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:27:55,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:27:55,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976219907] [2025-01-09 14:27:55,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:27:55,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:27:55,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:27:55,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:27:55,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:27:55,753 INFO L87 Difference]: Start difference. First operand 188 states and 298 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:27:55,850 INFO L93 Difference]: Finished difference Result 554 states and 880 transitions. [2025-01-09 14:27:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:27:55,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 310 [2025-01-09 14:27:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:27:55,857 INFO L225 Difference]: With dead ends: 554 [2025-01-09 14:27:55,858 INFO L226 Difference]: Without dead ends: 369 [2025-01-09 14:27:55,859 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 14:27:55,861 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 281 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:27:55,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 784 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:27:55,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2025-01-09 14:27:55,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2025-01-09 14:27:55,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 274 states have (on average 1.4598540145985401) internal successors, (400), 274 states have internal predecessors, (400), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-01-09 14:27:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 580 transitions. [2025-01-09 14:27:55,905 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 580 transitions. Word has length 310 [2025-01-09 14:27:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:27:55,906 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 580 transitions. [2025-01-09 14:27:55,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 580 transitions. [2025-01-09 14:27:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2025-01-09 14:27:55,913 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:27:55,914 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:27:55,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 14:27:55,914 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:27:55,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:27:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash -951877080, now seen corresponding path program 1 times [2025-01-09 14:27:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:27:55,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855354375] [2025-01-09 14:27:55,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:27:55,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:27:55,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-01-09 14:27:56,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-01-09 14:27:56,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:27:56,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:27:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:27:56,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:27:56,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855354375] [2025-01-09 14:27:56,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855354375] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:27:56,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:27:56,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:27:56,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221791256] [2025-01-09 14:27:56,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:27:56,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:27:56,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:27:56,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:27:56,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:27:56,451 INFO L87 Difference]: Start difference. First operand 367 states and 580 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:56,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:27:56,819 INFO L93 Difference]: Finished difference Result 1285 states and 2012 transitions. [2025-01-09 14:27:56,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:27:56,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 310 [2025-01-09 14:27:56,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:27:56,829 INFO L225 Difference]: With dead ends: 1285 [2025-01-09 14:27:56,830 INFO L226 Difference]: Without dead ends: 921 [2025-01-09 14:27:56,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 14:27:56,833 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 446 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:27:56,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 981 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 14:27:56,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2025-01-09 14:27:56,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 630. [2025-01-09 14:27:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 445 states have (on average 1.397752808988764) internal successors, (622), 445 states have internal predecessors, (622), 180 states have call successors, (180), 4 states have call predecessors, (180), 4 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2025-01-09 14:27:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 982 transitions. [2025-01-09 14:27:56,906 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 982 transitions. Word has length 310 [2025-01-09 14:27:56,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:27:56,908 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 982 transitions. [2025-01-09 14:27:56,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:56,908 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 982 transitions. [2025-01-09 14:27:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-01-09 14:27:56,912 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:27:56,913 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:27:56,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 14:27:56,913 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:27:56,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:27:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1054041904, now seen corresponding path program 1 times [2025-01-09 14:27:56,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:27:56,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376582062] [2025-01-09 14:27:56,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:27:56,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:27:56,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-01-09 14:27:56,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-01-09 14:27:56,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:27:56,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:27:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:27:57,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:27:57,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376582062] [2025-01-09 14:27:57,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376582062] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:27:57,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:27:57,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:27:57,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224350683] [2025-01-09 14:27:57,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:27:57,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:27:57,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:27:57,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:27:57,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:27:57,281 INFO L87 Difference]: Start difference. First operand 630 states and 982 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:57,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:27:57,506 INFO L93 Difference]: Finished difference Result 1586 states and 2464 transitions. [2025-01-09 14:27:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:27:57,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 311 [2025-01-09 14:27:57,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:27:57,512 INFO L225 Difference]: With dead ends: 1586 [2025-01-09 14:27:57,512 INFO L226 Difference]: Without dead ends: 959 [2025-01-09 14:27:57,513 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 14:27:57,514 INFO L435 NwaCegarLoop]: 289 mSDtfsCounter, 266 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:27:57,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 856 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:27:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2025-01-09 14:27:57,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 825. [2025-01-09 14:27:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 594 states have (on average 1.4158249158249159) internal successors, (841), 594 states have internal predecessors, (841), 225 states have call successors, (225), 5 states have call predecessors, (225), 5 states have return successors, (225), 225 states have call predecessors, (225), 225 states have call successors, (225) [2025-01-09 14:27:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1291 transitions. [2025-01-09 14:27:57,618 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1291 transitions. Word has length 311 [2025-01-09 14:27:57,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:27:57,619 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1291 transitions. [2025-01-09 14:27:57,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:57,619 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1291 transitions. [2025-01-09 14:27:57,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2025-01-09 14:27:57,621 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:27:57,622 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:27:57,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 14:27:57,622 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:27:57,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:27:57,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1203627510, now seen corresponding path program 1 times [2025-01-09 14:27:57,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:27:57,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875544297] [2025-01-09 14:27:57,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:27:57,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:27:57,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-01-09 14:27:57,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-01-09 14:27:57,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:27:57,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:27:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:27:57,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:27:57,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875544297] [2025-01-09 14:27:57,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875544297] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:27:57,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:27:57,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:27:57,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201277436] [2025-01-09 14:27:57,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:27:57,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:27:57,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:27:57,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:27:57,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:27:57,893 INFO L87 Difference]: Start difference. First operand 825 states and 1291 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:27:58,112 INFO L93 Difference]: Finished difference Result 1697 states and 2638 transitions. [2025-01-09 14:27:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:27:58,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 312 [2025-01-09 14:27:58,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:27:58,118 INFO L225 Difference]: With dead ends: 1697 [2025-01-09 14:27:58,118 INFO L226 Difference]: Without dead ends: 959 [2025-01-09 14:27:58,120 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 14:27:58,121 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 262 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:27:58,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 859 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:27:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2025-01-09 14:27:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 829. [2025-01-09 14:27:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 598 states have (on average 1.411371237458194) internal successors, (844), 598 states have internal predecessors, (844), 225 states have call successors, (225), 5 states have call predecessors, (225), 5 states have return successors, (225), 225 states have call predecessors, (225), 225 states have call successors, (225) [2025-01-09 14:27:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1294 transitions. [2025-01-09 14:27:58,178 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1294 transitions. Word has length 312 [2025-01-09 14:27:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:27:58,178 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 1294 transitions. [2025-01-09 14:27:58,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:58,179 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1294 transitions. [2025-01-09 14:27:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2025-01-09 14:27:58,181 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:27:58,181 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:27:58,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 14:27:58,181 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:27:58,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:27:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1853757779, now seen corresponding path program 1 times [2025-01-09 14:27:58,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:27:58,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776946805] [2025-01-09 14:27:58,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:27:58,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:27:58,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-01-09 14:27:58,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-01-09 14:27:58,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:27:58,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:27:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:27:58,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:27:58,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776946805] [2025-01-09 14:27:58,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776946805] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:27:58,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:27:58,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:27:58,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136702805] [2025-01-09 14:27:58,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:27:58,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:27:58,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:27:58,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:27:58,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:27:58,473 INFO L87 Difference]: Start difference. First operand 829 states and 1294 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:58,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:27:58,549 INFO L93 Difference]: Finished difference Result 1844 states and 2880 transitions. [2025-01-09 14:27:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:27:58,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2025-01-09 14:27:58,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:27:58,559 INFO L225 Difference]: With dead ends: 1844 [2025-01-09 14:27:58,560 INFO L226 Difference]: Without dead ends: 1186 [2025-01-09 14:27:58,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:27:58,563 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 184 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:27:58,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 646 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:27:58,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2025-01-09 14:27:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1184. [2025-01-09 14:27:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 861 states have (on average 1.4157955865272938) internal successors, (1219), 861 states have internal predecessors, (1219), 315 states have call successors, (315), 7 states have call predecessors, (315), 7 states have return successors, (315), 315 states have call predecessors, (315), 315 states have call successors, (315) [2025-01-09 14:27:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1849 transitions. [2025-01-09 14:27:58,685 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1849 transitions. Word has length 313 [2025-01-09 14:27:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:27:58,686 INFO L471 AbstractCegarLoop]: Abstraction has 1184 states and 1849 transitions. [2025-01-09 14:27:58,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1849 transitions. [2025-01-09 14:27:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2025-01-09 14:27:58,689 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:27:58,689 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:27:58,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 14:27:58,689 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:27:58,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:27:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1987771285, now seen corresponding path program 1 times [2025-01-09 14:27:58,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:27:58,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926424772] [2025-01-09 14:27:58,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:27:58,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:27:58,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-01-09 14:27:58,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-01-09 14:27:58,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:27:58,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:27:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:27:59,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:27:59,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926424772] [2025-01-09 14:27:59,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926424772] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:27:59,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:27:59,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:27:59,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550337884] [2025-01-09 14:27:59,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:27:59,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:27:59,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:27:59,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:27:59,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:27:59,351 INFO L87 Difference]: Start difference. First operand 1184 states and 1849 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:27:59,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:27:59,957 INFO L93 Difference]: Finished difference Result 4540 states and 7116 transitions. [2025-01-09 14:27:59,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 14:27:59,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2025-01-09 14:27:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:27:59,974 INFO L225 Difference]: With dead ends: 4540 [2025-01-09 14:27:59,974 INFO L226 Difference]: Without dead ends: 3452 [2025-01-09 14:27:59,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 14:27:59,979 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 771 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 14:27:59,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1616 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 14:27:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3452 states. [2025-01-09 14:28:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3452 to 3446. [2025-01-09 14:28:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3446 states, 2571 states have (on average 1.411124076234928) internal successors, (3628), 2571 states have internal predecessors, (3628), 855 states have call successors, (855), 19 states have call predecessors, (855), 19 states have return successors, (855), 855 states have call predecessors, (855), 855 states have call successors, (855) [2025-01-09 14:28:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 5338 transitions. [2025-01-09 14:28:00,147 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 5338 transitions. Word has length 313 [2025-01-09 14:28:00,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:00,148 INFO L471 AbstractCegarLoop]: Abstraction has 3446 states and 5338 transitions. [2025-01-09 14:28:00,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 5338 transitions. [2025-01-09 14:28:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2025-01-09 14:28:00,152 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:00,152 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:00,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 14:28:00,152 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:00,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:00,153 INFO L85 PathProgramCache]: Analyzing trace with hash 324064471, now seen corresponding path program 1 times [2025-01-09 14:28:00,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:00,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057906744] [2025-01-09 14:28:00,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:00,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:00,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-01-09 14:28:00,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-01-09 14:28:00,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:00,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:28:00,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:28:00,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057906744] [2025-01-09 14:28:00,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057906744] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:28:00,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:28:00,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:28:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431020162] [2025-01-09 14:28:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:28:00,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:28:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:28:00,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:28:00,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:28:00,836 INFO L87 Difference]: Start difference. First operand 3446 states and 5338 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:28:01,358 INFO L93 Difference]: Finished difference Result 8557 states and 13264 transitions. [2025-01-09 14:28:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:28:01,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 314 [2025-01-09 14:28:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:28:01,387 INFO L225 Difference]: With dead ends: 8557 [2025-01-09 14:28:01,387 INFO L226 Difference]: Without dead ends: 5493 [2025-01-09 14:28:01,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-09 14:28:01,398 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 453 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:28:01,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 910 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 14:28:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2025-01-09 14:28:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 5489. [2025-01-09 14:28:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5489 states, 4062 states have (on average 1.4027572624322993) internal successors, (5698), 4062 states have internal predecessors, (5698), 1395 states have call successors, (1395), 31 states have call predecessors, (1395), 31 states have return successors, (1395), 1395 states have call predecessors, (1395), 1395 states have call successors, (1395) [2025-01-09 14:28:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5489 states to 5489 states and 8488 transitions. [2025-01-09 14:28:01,742 INFO L78 Accepts]: Start accepts. Automaton has 5489 states and 8488 transitions. Word has length 314 [2025-01-09 14:28:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:01,743 INFO L471 AbstractCegarLoop]: Abstraction has 5489 states and 8488 transitions. [2025-01-09 14:28:01,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5489 states and 8488 transitions. [2025-01-09 14:28:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2025-01-09 14:28:01,748 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:01,749 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:01,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 14:28:01,749 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:01,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1127008675, now seen corresponding path program 1 times [2025-01-09 14:28:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:01,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651449142] [2025-01-09 14:28:01,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:01,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-01-09 14:28:02,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-01-09 14:28:02,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:02,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 54 proven. 78 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-01-09 14:28:02,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:28:02,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651449142] [2025-01-09 14:28:02,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651449142] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:28:02,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191090871] [2025-01-09 14:28:02,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:02,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:28:02,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:28:02,608 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 14:28:02,611 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 14:28:02,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-01-09 14:28:02,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-01-09 14:28:02,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:02,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:02,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 14:28:02,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:28:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1968 proven. 54 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2025-01-09 14:28:03,099 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:28:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 78 proven. 54 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-01-09 14:28:03,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191090871] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:28:03,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:28:03,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2025-01-09 14:28:03,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560787236] [2025-01-09 14:28:03,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:28:03,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 14:28:03,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:28:03,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 14:28:03,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-01-09 14:28:03,548 INFO L87 Difference]: Start difference. First operand 5489 states and 8488 transitions. Second operand has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 4 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 4 states have call predecessors, (109), 4 states have call successors, (109) [2025-01-09 14:28:05,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:28:05,933 INFO L93 Difference]: Finished difference Result 19386 states and 29162 transitions. [2025-01-09 14:28:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-01-09 14:28:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 4 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 4 states have call predecessors, (109), 4 states have call successors, (109) Word has length 314 [2025-01-09 14:28:05,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:28:06,004 INFO L225 Difference]: With dead ends: 19386 [2025-01-09 14:28:06,007 INFO L226 Difference]: Without dead ends: 14024 [2025-01-09 14:28:06,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 622 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=484, Invalid=2066, Unknown=0, NotChecked=0, Total=2550 [2025-01-09 14:28:06,026 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 3165 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3192 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-09 14:28:06,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3192 Valid, 2178 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-09 14:28:06,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14024 states. [2025-01-09 14:28:06,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14024 to 8240. [2025-01-09 14:28:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8240 states, 6241 states have (on average 1.3590770709822144) internal successors, (8482), 6271 states have internal predecessors, (8482), 1905 states have call successors, (1905), 93 states have call predecessors, (1905), 93 states have return successors, (1905), 1875 states have call predecessors, (1905), 1905 states have call successors, (1905) [2025-01-09 14:28:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 12292 transitions. [2025-01-09 14:28:06,710 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 12292 transitions. Word has length 314 [2025-01-09 14:28:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:06,711 INFO L471 AbstractCegarLoop]: Abstraction has 8240 states and 12292 transitions. [2025-01-09 14:28:06,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 states have internal predecessors, (174), 4 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 4 states have call predecessors, (109), 4 states have call successors, (109) [2025-01-09 14:28:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 12292 transitions. [2025-01-09 14:28:06,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2025-01-09 14:28:06,717 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:06,718 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:06,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 14:28:06,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:28:06,919 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:06,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:06,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1961579961, now seen corresponding path program 1 times [2025-01-09 14:28:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839218241] [2025-01-09 14:28:06,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:06,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:06,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-01-09 14:28:06,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-01-09 14:28:06,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:06,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:28:07,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:28:07,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839218241] [2025-01-09 14:28:07,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839218241] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:28:07,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:28:07,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 14:28:07,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718416266] [2025-01-09 14:28:07,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:28:07,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 14:28:07,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:28:07,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 14:28:07,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:28:07,621 INFO L87 Difference]: Start difference. First operand 8240 states and 12292 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:28:08,387 INFO L93 Difference]: Finished difference Result 14018 states and 20925 transitions. [2025-01-09 14:28:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 14:28:08,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 315 [2025-01-09 14:28:08,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:28:08,418 INFO L225 Difference]: With dead ends: 14018 [2025-01-09 14:28:08,418 INFO L226 Difference]: Without dead ends: 10012 [2025-01-09 14:28:08,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2025-01-09 14:28:08,429 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 398 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 14:28:08,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1135 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 14:28:08,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2025-01-09 14:28:08,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 9985. [2025-01-09 14:28:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9985 states, 7446 states have (on average 1.348777867311308) internal successors, (10043), 7496 states have internal predecessors, (10043), 2425 states have call successors, (2425), 113 states have call predecessors, (2425), 113 states have return successors, (2425), 2375 states have call predecessors, (2425), 2425 states have call successors, (2425) [2025-01-09 14:28:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9985 states to 9985 states and 14893 transitions. [2025-01-09 14:28:08,889 INFO L78 Accepts]: Start accepts. Automaton has 9985 states and 14893 transitions. Word has length 315 [2025-01-09 14:28:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:08,890 INFO L471 AbstractCegarLoop]: Abstraction has 9985 states and 14893 transitions. [2025-01-09 14:28:08,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 9985 states and 14893 transitions. [2025-01-09 14:28:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2025-01-09 14:28:08,895 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:08,896 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:08,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 14:28:08,896 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:08,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:08,897 INFO L85 PathProgramCache]: Analyzing trace with hash 124105485, now seen corresponding path program 1 times [2025-01-09 14:28:08,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:08,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404127707] [2025-01-09 14:28:08,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:08,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:08,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-01-09 14:28:08,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-01-09 14:28:08,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:08,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:28:09,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:28:09,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404127707] [2025-01-09 14:28:09,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404127707] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:28:09,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:28:09,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:28:09,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801273448] [2025-01-09 14:28:09,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:28:09,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:28:09,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:28:09,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:28:09,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:28:09,284 INFO L87 Difference]: Start difference. First operand 9985 states and 14893 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:10,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:28:10,465 INFO L93 Difference]: Finished difference Result 19502 states and 29208 transitions. [2025-01-09 14:28:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 14:28:10,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 315 [2025-01-09 14:28:10,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:28:10,519 INFO L225 Difference]: With dead ends: 19502 [2025-01-09 14:28:10,519 INFO L226 Difference]: Without dead ends: 13998 [2025-01-09 14:28:10,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 14:28:10,539 INFO L435 NwaCegarLoop]: 814 mSDtfsCounter, 698 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 14:28:10,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 2436 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 14:28:10,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13998 states. [2025-01-09 14:28:11,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13998 to 11056. [2025-01-09 14:28:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11056 states, 8185 states have (on average 1.3440439828955406) internal successors, (11001), 8241 states have internal predecessors, (11001), 2743 states have call successors, (2743), 127 states have call predecessors, (2743), 127 states have return successors, (2743), 2687 states have call predecessors, (2743), 2743 states have call successors, (2743) [2025-01-09 14:28:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11056 states to 11056 states and 16487 transitions. [2025-01-09 14:28:11,135 INFO L78 Accepts]: Start accepts. Automaton has 11056 states and 16487 transitions. Word has length 315 [2025-01-09 14:28:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:11,135 INFO L471 AbstractCegarLoop]: Abstraction has 11056 states and 16487 transitions. [2025-01-09 14:28:11,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 11056 states and 16487 transitions. [2025-01-09 14:28:11,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2025-01-09 14:28:11,141 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:11,141 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:11,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-09 14:28:11,141 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:11,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:11,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1518898116, now seen corresponding path program 1 times [2025-01-09 14:28:11,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:11,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275891918] [2025-01-09 14:28:11,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:11,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:11,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 316 statements into 1 equivalence classes. [2025-01-09 14:28:11,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 316 of 316 statements. [2025-01-09 14:28:11,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:11,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:28:11,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:28:11,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275891918] [2025-01-09 14:28:11,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275891918] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:28:11,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:28:11,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:28:11,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105713371] [2025-01-09 14:28:11,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:28:11,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:28:11,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:28:11,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:28:11,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:28:11,221 INFO L87 Difference]: Start difference. First operand 11056 states and 16487 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:28:11,504 INFO L93 Difference]: Finished difference Result 16185 states and 24200 transitions. [2025-01-09 14:28:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:28:11,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 316 [2025-01-09 14:28:11,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:28:11,535 INFO L225 Difference]: With dead ends: 16185 [2025-01-09 14:28:11,536 INFO L226 Difference]: Without dead ends: 9172 [2025-01-09 14:28:11,551 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 14:28:11,552 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 281 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:28:11,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 620 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:28:11,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9172 states. [2025-01-09 14:28:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9172 to 7529. [2025-01-09 14:28:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7529 states, 5676 states have (on average 1.343199436222692) internal successors, (7624), 5716 states have internal predecessors, (7624), 1769 states have call successors, (1769), 83 states have call predecessors, (1769), 83 states have return successors, (1769), 1729 states have call predecessors, (1769), 1769 states have call successors, (1769) [2025-01-09 14:28:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7529 states to 7529 states and 11162 transitions. [2025-01-09 14:28:11,922 INFO L78 Accepts]: Start accepts. Automaton has 7529 states and 11162 transitions. Word has length 316 [2025-01-09 14:28:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:11,923 INFO L471 AbstractCegarLoop]: Abstraction has 7529 states and 11162 transitions. [2025-01-09 14:28:11,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7529 states and 11162 transitions. [2025-01-09 14:28:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2025-01-09 14:28:11,927 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:11,928 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:11,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 14:28:11,928 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:11,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:11,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1615000481, now seen corresponding path program 1 times [2025-01-09 14:28:11,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:11,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103094362] [2025-01-09 14:28:11,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:11,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:11,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 316 statements into 1 equivalence classes. [2025-01-09 14:28:12,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 316 of 316 statements. [2025-01-09 14:28:12,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:12,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:28:12,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:28:12,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103094362] [2025-01-09 14:28:12,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103094362] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:28:12,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:28:12,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:28:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141636179] [2025-01-09 14:28:12,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:28:12,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:28:12,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:28:12,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:28:12,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:28:12,432 INFO L87 Difference]: Start difference. First operand 7529 states and 11162 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:12,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:28:12,888 INFO L93 Difference]: Finished difference Result 10284 states and 15313 transitions. [2025-01-09 14:28:12,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:28:12,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 316 [2025-01-09 14:28:12,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:28:12,909 INFO L225 Difference]: With dead ends: 10284 [2025-01-09 14:28:12,909 INFO L226 Difference]: Without dead ends: 6358 [2025-01-09 14:28:12,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-09 14:28:12,921 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 180 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:28:12,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 966 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:28:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2025-01-09 14:28:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6356. [2025-01-09 14:28:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6356 states, 4835 states have (on average 1.3493278179937953) internal successors, (6524), 4869 states have internal predecessors, (6524), 1451 states have call successors, (1451), 69 states have call predecessors, (1451), 69 states have return successors, (1451), 1417 states have call predecessors, (1451), 1451 states have call successors, (1451) [2025-01-09 14:28:13,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6356 states to 6356 states and 9426 transitions. [2025-01-09 14:28:13,178 INFO L78 Accepts]: Start accepts. Automaton has 6356 states and 9426 transitions. Word has length 316 [2025-01-09 14:28:13,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:13,180 INFO L471 AbstractCegarLoop]: Abstraction has 6356 states and 9426 transitions. [2025-01-09 14:28:13,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:13,180 INFO L276 IsEmpty]: Start isEmpty. Operand 6356 states and 9426 transitions. [2025-01-09 14:28:13,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2025-01-09 14:28:13,185 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:13,186 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:13,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 14:28:13,186 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:13,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash 434387361, now seen corresponding path program 1 times [2025-01-09 14:28:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:13,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124107212] [2025-01-09 14:28:13,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:13,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:13,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 316 statements into 1 equivalence classes. [2025-01-09 14:28:13,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 316 of 316 statements. [2025-01-09 14:28:13,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:13,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:28:13,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:28:13,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124107212] [2025-01-09 14:28:13,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124107212] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:28:13,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:28:13,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:28:13,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690168471] [2025-01-09 14:28:13,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:28:13,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:28:13,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:28:13,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:28:13,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:28:13,921 INFO L87 Difference]: Start difference. First operand 6356 states and 9426 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:28:15,258 INFO L93 Difference]: Finished difference Result 11331 states and 16917 transitions. [2025-01-09 14:28:15,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:28:15,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 316 [2025-01-09 14:28:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:28:15,285 INFO L225 Difference]: With dead ends: 11331 [2025-01-09 14:28:15,285 INFO L226 Difference]: Without dead ends: 5935 [2025-01-09 14:28:15,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:28:15,298 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 680 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-09 14:28:15,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 2063 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-09 14:28:15,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5935 states. [2025-01-09 14:28:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5935 to 5551. [2025-01-09 14:28:15,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 4203 states have (on average 1.3471330002379254) internal successors, (5662), 4229 states have internal predecessors, (5662), 1288 states have call successors, (1288), 59 states have call predecessors, (1288), 59 states have return successors, (1288), 1262 states have call predecessors, (1288), 1288 states have call successors, (1288) [2025-01-09 14:28:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 8238 transitions. [2025-01-09 14:28:15,744 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 8238 transitions. Word has length 316 [2025-01-09 14:28:15,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:15,744 INFO L471 AbstractCegarLoop]: Abstraction has 5551 states and 8238 transitions. [2025-01-09 14:28:15,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:15,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 8238 transitions. [2025-01-09 14:28:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-01-09 14:28:15,748 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:15,748 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:15,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-09 14:28:15,749 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:15,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1780679257, now seen corresponding path program 1 times [2025-01-09 14:28:15,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:15,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609842567] [2025-01-09 14:28:15,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:15,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:15,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-01-09 14:28:16,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-01-09 14:28:16,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:16,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:28:16,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111369130] [2025-01-09 14:28:16,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:16,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:28:16,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:28:16,367 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 14:28:16,371 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 14:28:16,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-01-09 14:28:16,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-01-09 14:28:16,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:16,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:16,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 14:28:16,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:28:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2527 proven. 156 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2025-01-09 14:28:18,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:28:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:28:19,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609842567] [2025-01-09 14:28:19,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 14:28:19,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111369130] [2025-01-09 14:28:19,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111369130] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:28:19,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:28:19,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2025-01-09 14:28:19,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055438418] [2025-01-09 14:28:19,659 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 14:28:19,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 14:28:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:28:19,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 14:28:19,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2025-01-09 14:28:19,661 INFO L87 Difference]: Start difference. First operand 5551 states and 8238 transitions. Second operand has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 5 states have call successors, (45), 5 states have call predecessors, (45), 8 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) [2025-01-09 14:28:24,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:28:24,579 INFO L93 Difference]: Finished difference Result 29391 states and 41492 transitions. [2025-01-09 14:28:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-01-09 14:28:24,580 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 5 states have call successors, (45), 5 states have call predecessors, (45), 8 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) Word has length 317 [2025-01-09 14:28:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:28:24,673 INFO L225 Difference]: With dead ends: 29391 [2025-01-09 14:28:24,674 INFO L226 Difference]: Without dead ends: 24438 [2025-01-09 14:28:24,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1439, Invalid=4881, Unknown=0, NotChecked=0, Total=6320 [2025-01-09 14:28:24,690 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 2130 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2159 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-09 14:28:24,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2159 Valid, 2066 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-09 14:28:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24438 states. [2025-01-09 14:28:25,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24438 to 9627. [2025-01-09 14:28:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9627 states, 7730 states have (on average 1.3601552393272962) internal successors, (10514), 7779 states have internal predecessors, (10514), 1679 states have call successors, (1679), 217 states have call predecessors, (1679), 217 states have return successors, (1679), 1630 states have call predecessors, (1679), 1679 states have call successors, (1679) [2025-01-09 14:28:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9627 states to 9627 states and 13872 transitions. [2025-01-09 14:28:25,830 INFO L78 Accepts]: Start accepts. Automaton has 9627 states and 13872 transitions. Word has length 317 [2025-01-09 14:28:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:25,831 INFO L471 AbstractCegarLoop]: Abstraction has 9627 states and 13872 transitions. [2025-01-09 14:28:25,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 5 states have call successors, (45), 5 states have call predecessors, (45), 8 states have return successors, (45), 5 states have call predecessors, (45), 5 states have call successors, (45) [2025-01-09 14:28:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9627 states and 13872 transitions. [2025-01-09 14:28:25,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-01-09 14:28:25,853 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:25,853 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:25,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 14:28:26,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:28:26,055 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:26,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:26,056 INFO L85 PathProgramCache]: Analyzing trace with hash 520143333, now seen corresponding path program 1 times [2025-01-09 14:28:26,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:26,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187177551] [2025-01-09 14:28:26,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:26,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:26,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-01-09 14:28:27,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-01-09 14:28:27,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:27,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:28:27,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975235944] [2025-01-09 14:28:27,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:27,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:28:27,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:28:27,698 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 14:28:27,700 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 14:28:27,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-01-09 14:28:27,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-01-09 14:28:27,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:27,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:27,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 14:28:27,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:28:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2322 proven. 81 refuted. 0 times theorem prover too weak. 1557 trivial. 0 not checked. [2025-01-09 14:28:28,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:28:28,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:28:28,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187177551] [2025-01-09 14:28:28,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 14:28:28,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975235944] [2025-01-09 14:28:28,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975235944] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:28:28,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:28:28,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-01-09 14:28:28,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94831608] [2025-01-09 14:28:28,748 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 14:28:28,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 14:28:28,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:28:28,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 14:28:28,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-01-09 14:28:28,750 INFO L87 Difference]: Start difference. First operand 9627 states and 13872 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 4 states have call successors, (45), 4 states have call predecessors, (45), 7 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2025-01-09 14:28:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:28:30,071 INFO L93 Difference]: Finished difference Result 19139 states and 27246 transitions. [2025-01-09 14:28:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 14:28:30,072 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 4 states have call successors, (45), 4 states have call predecessors, (45), 7 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) Word has length 317 [2025-01-09 14:28:30,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:28:30,105 INFO L225 Difference]: With dead ends: 19139 [2025-01-09 14:28:30,105 INFO L226 Difference]: Without dead ends: 10039 [2025-01-09 14:28:30,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2025-01-09 14:28:30,120 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 512 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 14:28:30,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1133 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 14:28:30,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10039 states. [2025-01-09 14:28:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10039 to 7316. [2025-01-09 14:28:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7316 states, 5930 states have (on average 1.3725126475548062) internal successors, (8139), 5959 states have internal predecessors, (8139), 1213 states have call successors, (1213), 172 states have call predecessors, (1213), 172 states have return successors, (1213), 1184 states have call predecessors, (1213), 1213 states have call successors, (1213) [2025-01-09 14:28:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 10565 transitions. [2025-01-09 14:28:30,720 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 10565 transitions. Word has length 317 [2025-01-09 14:28:30,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:30,721 INFO L471 AbstractCegarLoop]: Abstraction has 7316 states and 10565 transitions. [2025-01-09 14:28:30,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 4 states have call successors, (45), 4 states have call predecessors, (45), 7 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2025-01-09 14:28:30,721 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 10565 transitions. [2025-01-09 14:28:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-01-09 14:28:30,725 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:30,725 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:30,734 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 14:28:30,926 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,SelfDestructingSolverStorable15 [2025-01-09 14:28:30,927 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:30,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:30,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1250002105, now seen corresponding path program 1 times [2025-01-09 14:28:30,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:30,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556158438] [2025-01-09 14:28:30,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:30,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:30,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-01-09 14:28:31,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-01-09 14:28:31,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:31,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:28:31,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840724312] [2025-01-09 14:28:31,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:31,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:28:31,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:28:31,751 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 14:28:31,752 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 14:28:31,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-01-09 14:28:32,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-01-09 14:28:32,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:32,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:28:32,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 14:28:32,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:28:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1752 proven. 90 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2025-01-09 14:28:32,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:28:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-01-09 14:28:33,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:28:33,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556158438] [2025-01-09 14:28:33,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 14:28:33,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840724312] [2025-01-09 14:28:33,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840724312] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 14:28:33,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:28:33,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2025-01-09 14:28:33,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445302753] [2025-01-09 14:28:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:28:33,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:28:33,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:28:33,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:28:33,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-09 14:28:33,105 INFO L87 Difference]: Start difference. First operand 7316 states and 10565 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:28:33,579 INFO L93 Difference]: Finished difference Result 13732 states and 19885 transitions. [2025-01-09 14:28:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:28:33,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 317 [2025-01-09 14:28:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:28:33,599 INFO L225 Difference]: With dead ends: 13732 [2025-01-09 14:28:33,599 INFO L226 Difference]: Without dead ends: 6813 [2025-01-09 14:28:33,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-09 14:28:33,608 INFO L435 NwaCegarLoop]: 288 mSDtfsCounter, 79 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:28:33,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 553 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:28:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6813 states. [2025-01-09 14:28:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6813 to 5036. [2025-01-09 14:28:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5036 states, 4100 states have (on average 1.3619512195121952) internal successors, (5584), 4119 states have internal predecessors, (5584), 818 states have call successors, (818), 117 states have call predecessors, (818), 117 states have return successors, (818), 799 states have call predecessors, (818), 818 states have call successors, (818) [2025-01-09 14:28:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5036 states to 5036 states and 7220 transitions. [2025-01-09 14:28:33,929 INFO L78 Accepts]: Start accepts. Automaton has 5036 states and 7220 transitions. Word has length 317 [2025-01-09 14:28:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:28:33,930 INFO L471 AbstractCegarLoop]: Abstraction has 5036 states and 7220 transitions. [2025-01-09 14:28:33,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-01-09 14:28:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5036 states and 7220 transitions. [2025-01-09 14:28:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-01-09 14:28:33,933 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:28:33,933 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:33,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 14:28:34,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 14:28:34,134 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:28:34,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:28:34,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1313746609, now seen corresponding path program 1 times [2025-01-09 14:28:34,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:28:34,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28260608] [2025-01-09 14:28:34,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:34,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:28:34,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-01-09 14:28:34,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-01-09 14:28:34,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:28:34,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:28:34,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710141412] [2025-01-09 14:28:34,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:28:34,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:28:34,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:28:34,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 14:28:34,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 14:28:34,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes.