./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-83.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-83.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 af94c72fed5c617f2d62b60a9a463119b111eeac1c576534ea625be0d9ccdbbc --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 14:28:56,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 14:28:56,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 14:28:56,686 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 14:28:56,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 14:28:56,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 14:28:56,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 14:28:56,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 14:28:56,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 14:28:56,711 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 14:28:56,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 14:28:56,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 14:28:56,711 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 14:28:56,711 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 14:28:56,711 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 14:28:56,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 14:28:56,712 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 14:28:56,712 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 14:28:56,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 14:28:56,712 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 14:28:56,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 14:28:56,712 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 14:28:56,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 14:28:56,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 14:28:56,712 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 14:28:56,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 14:28:56,713 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:28:56,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:28:56,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 14:28:56,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 14:28:56,714 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 14:28:56,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 14:28:56,714 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 -> af94c72fed5c617f2d62b60a9a463119b111eeac1c576534ea625be0d9ccdbbc [2025-01-09 14:28:56,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 14:28:56,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 14:28:56,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 14:28:56,949 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 14:28:56,949 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 14:28:56,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-83.i [2025-01-09 14:28:58,202 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/44b132d2e/075ddc15e965479984b09ef6f8f8b447/FLAG7bb9d4d90 [2025-01-09 14:28:58,483 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 14:28:58,483 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-83.i [2025-01-09 14:28:58,495 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/44b132d2e/075ddc15e965479984b09ef6f8f8b447/FLAG7bb9d4d90 [2025-01-09 14:28:58,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/44b132d2e/075ddc15e965479984b09ef6f8f8b447 [2025-01-09 14:28:58,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 14:28:58,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 14:28:58,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 14:28:58,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 14:28:58,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 14:28:58,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:58,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d16ed0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58, skipping insertion in model container [2025-01-09 14:28:58,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:58,542 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 14:28:58,651 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-83.i[916,929] [2025-01-09 14:28:58,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:28:58,805 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 14:28:58,817 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-83.i[916,929] [2025-01-09 14:28:58,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:28:58,889 INFO L204 MainTranslator]: Completed translation [2025-01-09 14:28:58,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58 WrapperNode [2025-01-09 14:28:58,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 14:28:58,892 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 14:28:58,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 14:28:58,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 14:28:58,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:58,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:58,992 INFO L138 Inliner]: procedures = 26, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 449 [2025-01-09 14:28:58,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 14:28:58,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 14:28:58,994 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 14:28:58,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 14:28:59,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,052 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 14:28:59,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,053 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,072 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,080 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 14:28:59,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 14:28:59,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 14:28:59,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 14:28:59,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (1/1) ... [2025-01-09 14:28:59,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:28:59,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:28:59,158 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 14:28:59,163 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 14:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 14:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 14:28:59,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 14:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 14:28:59,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 14:28:59,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 14:28:59,258 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 14:28:59,260 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 14:29:00,170 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2025-01-09 14:29:00,170 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 14:29:00,189 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 14:29:00,192 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 14:29:00,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:29:00 BoogieIcfgContainer [2025-01-09 14:29:00,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 14:29:00,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 14:29:00,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 14:29:00,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 14:29:00,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:28:58" (1/3) ... [2025-01-09 14:29:00,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488d41cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:29:00, skipping insertion in model container [2025-01-09 14:29:00,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:28:58" (2/3) ... [2025-01-09 14:29:00,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488d41cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:29:00, skipping insertion in model container [2025-01-09 14:29:00,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:29:00" (3/3) ... [2025-01-09 14:29:00,203 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-83.i [2025-01-09 14:29:00,218 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 14:29:00,222 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-83.i that has 2 procedures, 188 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 14:29:00,291 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 14:29:00,305 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;@45fee0cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 14:29:00,306 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 14:29:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 129 states have (on average 1.4806201550387597) internal successors, (191), 130 states have internal predecessors, (191), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-01-09 14:29:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-01-09 14:29:00,337 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:00,338 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:00,338 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:00,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1174898673, now seen corresponding path program 1 times [2025-01-09 14:29:00,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:00,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573510727] [2025-01-09 14:29:00,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:00,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:00,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-01-09 14:29:00,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-01-09 14:29:00,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:00,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-01-09 14:29:01,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:01,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573510727] [2025-01-09 14:29:01,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573510727] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:29:01,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:29:01,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:29:01,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641752484] [2025-01-09 14:29:01,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:29:01,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:29:01,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:01,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:29:01,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:29:01,093 INFO L87 Difference]: Start difference. First operand has 188 states, 129 states have (on average 1.4806201550387597) internal successors, (191), 130 states have internal predecessors, (191), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-01-09 14:29:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:01,226 INFO L93 Difference]: Finished difference Result 526 states and 953 transitions. [2025-01-09 14:29:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:29:01,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 353 [2025-01-09 14:29:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:01,238 INFO L225 Difference]: With dead ends: 526 [2025-01-09 14:29:01,239 INFO L226 Difference]: Without dead ends: 341 [2025-01-09 14:29:01,244 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 14:29:01,245 INFO L435 NwaCegarLoop]: 289 mSDtfsCounter, 241 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:01,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 568 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:29:01,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2025-01-09 14:29:01,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 338. [2025-01-09 14:29:01,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 237 states have (on average 1.4472573839662448) internal successors, (343), 238 states have internal predecessors, (343), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2025-01-09 14:29:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 539 transitions. [2025-01-09 14:29:01,335 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 539 transitions. Word has length 353 [2025-01-09 14:29:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:01,338 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 539 transitions. [2025-01-09 14:29:01,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-01-09 14:29:01,339 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 539 transitions. [2025-01-09 14:29:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-01-09 14:29:01,347 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:01,347 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:01,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 14:29:01,347 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:01,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:01,348 INFO L85 PathProgramCache]: Analyzing trace with hash 211304721, now seen corresponding path program 1 times [2025-01-09 14:29:01,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:01,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631134118] [2025-01-09 14:29:01,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:01,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-01-09 14:29:01,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-01-09 14:29:01,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:01,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-01-09 14:29:01,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:01,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631134118] [2025-01-09 14:29:01,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631134118] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:29:01,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:29:01,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:29:01,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820926796] [2025-01-09 14:29:01,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:29:01,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:29:01,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:01,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:29:01,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:29:01,669 INFO L87 Difference]: Start difference. First operand 338 states and 539 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-01-09 14:29:01,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:01,815 INFO L93 Difference]: Finished difference Result 1000 states and 1595 transitions. [2025-01-09 14:29:01,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:29:01,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 353 [2025-01-09 14:29:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:01,829 INFO L225 Difference]: With dead ends: 1000 [2025-01-09 14:29:01,832 INFO L226 Difference]: Without dead ends: 665 [2025-01-09 14:29:01,835 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 14:29:01,835 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 272 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:01,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 743 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:29:01,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2025-01-09 14:29:01,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 362. [2025-01-09 14:29:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 261 states have (on average 1.4482758620689655) internal successors, (378), 262 states have internal predecessors, (378), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2025-01-09 14:29:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 574 transitions. [2025-01-09 14:29:01,910 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 574 transitions. Word has length 353 [2025-01-09 14:29:01,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:01,911 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 574 transitions. [2025-01-09 14:29:01,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-01-09 14:29:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 574 transitions. [2025-01-09 14:29:01,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-01-09 14:29:01,918 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:01,918 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:01,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 14:29:01,918 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:01,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:01,919 INFO L85 PathProgramCache]: Analyzing trace with hash 138918163, now seen corresponding path program 1 times [2025-01-09 14:29:01,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:01,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649190130] [2025-01-09 14:29:01,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:01,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:01,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-01-09 14:29:01,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-01-09 14:29:01,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:01,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-01-09 14:29:02,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:02,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649190130] [2025-01-09 14:29:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649190130] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:29:02,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:29:02,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:29:02,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507314453] [2025-01-09 14:29:02,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:29:02,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:29:02,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:02,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:29:02,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:29:02,195 INFO L87 Difference]: Start difference. First operand 362 states and 574 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-01-09 14:29:02,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:02,334 INFO L93 Difference]: Finished difference Result 1024 states and 1624 transitions. [2025-01-09 14:29:02,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:29:02,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 353 [2025-01-09 14:29:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:02,342 INFO L225 Difference]: With dead ends: 1024 [2025-01-09 14:29:02,344 INFO L226 Difference]: Without dead ends: 665 [2025-01-09 14:29:02,346 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 14:29:02,347 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 280 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 656 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 14:29:02,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 656 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:29:02,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2025-01-09 14:29:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 362. [2025-01-09 14:29:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 261 states have (on average 1.4329501915708813) internal successors, (374), 262 states have internal predecessors, (374), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2025-01-09 14:29:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 570 transitions. [2025-01-09 14:29:02,412 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 570 transitions. Word has length 353 [2025-01-09 14:29:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:02,415 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 570 transitions. [2025-01-09 14:29:02,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-01-09 14:29:02,416 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 570 transitions. [2025-01-09 14:29:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-01-09 14:29:02,421 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:02,421 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:02,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 14:29:02,421 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:02,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:02,422 INFO L85 PathProgramCache]: Analyzing trace with hash -667900266, now seen corresponding path program 1 times [2025-01-09 14:29:02,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:02,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463360218] [2025-01-09 14:29:02,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:02,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:02,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-01-09 14:29:03,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-01-09 14:29:03,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:03,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:29:04,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:04,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463360218] [2025-01-09 14:29:04,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463360218] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:29:04,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724019644] [2025-01-09 14:29:04,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:04,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:04,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:29:04,008 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 14:29:04,010 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 14:29:04,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-01-09 14:29:04,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-01-09 14:29:04,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:04,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:04,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 14:29:04,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:29:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3222 proven. 246 refuted. 0 times theorem prover too weak. 2692 trivial. 0 not checked. [2025-01-09 14:29:05,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:29:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 78 proven. 249 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-01-09 14:29:06,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724019644] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:29:06,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:29:06,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 26 [2025-01-09 14:29:06,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998221320] [2025-01-09 14:29:06,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:29:06,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 14:29:06,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:06,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 14:29:06,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2025-01-09 14:29:06,051 INFO L87 Difference]: Start difference. First operand 362 states and 570 transitions. Second operand has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 5 states have call successors, (162), 3 states have call predecessors, (162), 7 states have return successors, (163), 5 states have call predecessors, (163), 5 states have call successors, (163) [2025-01-09 14:29:09,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:09,974 INFO L93 Difference]: Finished difference Result 1741 states and 2597 transitions. [2025-01-09 14:29:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2025-01-09 14:29:09,975 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 5 states have call successors, (162), 3 states have call predecessors, (162), 7 states have return successors, (163), 5 states have call predecessors, (163), 5 states have call successors, (163) Word has length 354 [2025-01-09 14:29:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:09,985 INFO L225 Difference]: With dead ends: 1741 [2025-01-09 14:29:09,985 INFO L226 Difference]: Without dead ends: 1382 [2025-01-09 14:29:09,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2513 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1757, Invalid=6615, Unknown=0, NotChecked=0, Total=8372 [2025-01-09 14:29:09,993 INFO L435 NwaCegarLoop]: 300 mSDtfsCounter, 1615 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 2878 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 3613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:09,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 2839 Invalid, 3613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 2878 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-01-09 14:29:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2025-01-09 14:29:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 852. [2025-01-09 14:29:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 641 states have (on average 1.3946957878315132) internal successors, (894), 646 states have internal predecessors, (894), 194 states have call successors, (194), 16 states have call predecessors, (194), 16 states have return successors, (194), 189 states have call predecessors, (194), 194 states have call successors, (194) [2025-01-09 14:29:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1282 transitions. [2025-01-09 14:29:10,072 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1282 transitions. Word has length 354 [2025-01-09 14:29:10,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:10,072 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1282 transitions. [2025-01-09 14:29:10,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 5 states have call successors, (162), 3 states have call predecessors, (162), 7 states have return successors, (163), 5 states have call predecessors, (163), 5 states have call successors, (163) [2025-01-09 14:29:10,073 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1282 transitions. [2025-01-09 14:29:10,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2025-01-09 14:29:10,076 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:10,076 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:10,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 14:29:10,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:10,277 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:10,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash 318576838, now seen corresponding path program 1 times [2025-01-09 14:29:10,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:10,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994773472] [2025-01-09 14:29:10,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:10,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-01-09 14:29:10,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-01-09 14:29:10,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:10,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:29:11,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:11,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994773472] [2025-01-09 14:29:11,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994773472] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:29:11,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077750794] [2025-01-09 14:29:11,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:11,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:11,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:29:11,365 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 14:29:11,366 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 14:29:11,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-01-09 14:29:11,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-01-09 14:29:11,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:11,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:11,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 14:29:11,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:29:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3040 proven. 252 refuted. 0 times theorem prover too weak. 2868 trivial. 0 not checked. [2025-01-09 14:29:12,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:29:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 72 proven. 255 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-01-09 14:29:12,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077750794] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:29:12,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:29:12,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 21 [2025-01-09 14:29:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858721934] [2025-01-09 14:29:12,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:29:12,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 14:29:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:12,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 14:29:12,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2025-01-09 14:29:12,899 INFO L87 Difference]: Start difference. First operand 852 states and 1282 transitions. Second operand has 21 states, 21 states have (on average 9.619047619047619) internal successors, (202), 21 states have internal predecessors, (202), 5 states have call successors, (166), 3 states have call predecessors, (166), 7 states have return successors, (167), 4 states have call predecessors, (167), 5 states have call successors, (167) [2025-01-09 14:29:15,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:15,553 INFO L93 Difference]: Finished difference Result 3743 states and 5364 transitions. [2025-01-09 14:29:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-01-09 14:29:15,556 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.619047619047619) internal successors, (202), 21 states have internal predecessors, (202), 5 states have call successors, (166), 3 states have call predecessors, (166), 7 states have return successors, (167), 4 states have call predecessors, (167), 5 states have call successors, (167) Word has length 355 [2025-01-09 14:29:15,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:15,575 INFO L225 Difference]: With dead ends: 3743 [2025-01-09 14:29:15,575 INFO L226 Difference]: Without dead ends: 2894 [2025-01-09 14:29:15,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1667 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1451, Invalid=4555, Unknown=0, NotChecked=0, Total=6006 [2025-01-09 14:29:15,582 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 1615 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:15,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1329 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [692 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-01-09 14:29:15,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2025-01-09 14:29:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1000. [2025-01-09 14:29:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 781 states have (on average 1.4058898847631243) internal successors, (1098), 786 states have internal predecessors, (1098), 194 states have call successors, (194), 24 states have call predecessors, (194), 24 states have return successors, (194), 189 states have call predecessors, (194), 194 states have call successors, (194) [2025-01-09 14:29:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1486 transitions. [2025-01-09 14:29:15,692 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1486 transitions. Word has length 355 [2025-01-09 14:29:15,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:15,693 INFO L471 AbstractCegarLoop]: Abstraction has 1000 states and 1486 transitions. [2025-01-09 14:29:15,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.619047619047619) internal successors, (202), 21 states have internal predecessors, (202), 5 states have call successors, (166), 3 states have call predecessors, (166), 7 states have return successors, (167), 4 states have call predecessors, (167), 5 states have call successors, (167) [2025-01-09 14:29:15,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1486 transitions. [2025-01-09 14:29:15,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2025-01-09 14:29:15,697 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:15,699 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:15,708 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 14:29:15,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:15,900 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:15,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash 616107875, now seen corresponding path program 1 times [2025-01-09 14:29:15,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321939360] [2025-01-09 14:29:15,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:15,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:15,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-01-09 14:29:16,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-01-09 14:29:16,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:16,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 126 proven. 39 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:29:16,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:16,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321939360] [2025-01-09 14:29:16,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321939360] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:29:16,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053040169] [2025-01-09 14:29:16,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:16,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:16,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:29:16,440 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 14:29:16,445 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 14:29:16,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-01-09 14:29:16,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-01-09 14:29:16,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:16,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:16,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 14:29:16,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:29:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2323 proven. 39 refuted. 0 times theorem prover too weak. 3798 trivial. 0 not checked. [2025-01-09 14:29:16,717 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:29:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 126 proven. 39 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:29:16,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053040169] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:29:16,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:29:16,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-01-09 14:29:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440352718] [2025-01-09 14:29:16,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:29:16,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 14:29:16,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:16,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 14:29:16,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:29:16,937 INFO L87 Difference]: Start difference. First operand 1000 states and 1486 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2025-01-09 14:29:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:17,428 INFO L93 Difference]: Finished difference Result 1622 states and 2397 transitions. [2025-01-09 14:29:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 14:29:17,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 355 [2025-01-09 14:29:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:17,432 INFO L225 Difference]: With dead ends: 1622 [2025-01-09 14:29:17,434 INFO L226 Difference]: Without dead ends: 625 [2025-01-09 14:29:17,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 707 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-01-09 14:29:17,438 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 207 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:17,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 808 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 14:29:17,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2025-01-09 14:29:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 610. [2025-01-09 14:29:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 444 states have (on average 1.3558558558558558) internal successors, (602), 447 states have internal predecessors, (602), 146 states have call successors, (146), 19 states have call predecessors, (146), 19 states have return successors, (146), 143 states have call predecessors, (146), 146 states have call successors, (146) [2025-01-09 14:29:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 894 transitions. [2025-01-09 14:29:17,480 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 894 transitions. Word has length 355 [2025-01-09 14:29:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:17,481 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 894 transitions. [2025-01-09 14:29:17,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) [2025-01-09 14:29:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 894 transitions. [2025-01-09 14:29:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-01-09 14:29:17,486 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:17,486 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:17,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 14:29:17,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:17,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:17,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:17,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1797597096, now seen corresponding path program 1 times [2025-01-09 14:29:17,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:17,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340055459] [2025-01-09 14:29:17,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:17,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-01-09 14:29:17,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-01-09 14:29:17,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:17,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-01-09 14:29:18,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:18,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340055459] [2025-01-09 14:29:18,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340055459] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:29:18,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:29:18,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:29:18,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000713122] [2025-01-09 14:29:18,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:29:18,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:29:18,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:18,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:29:18,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:29:18,066 INFO L87 Difference]: Start difference. First operand 610 states and 894 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-01-09 14:29:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:18,449 INFO L93 Difference]: Finished difference Result 1530 states and 2242 transitions. [2025-01-09 14:29:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:29:18,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 356 [2025-01-09 14:29:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:18,457 INFO L225 Difference]: With dead ends: 1530 [2025-01-09 14:29:18,457 INFO L226 Difference]: Without dead ends: 1013 [2025-01-09 14:29:18,459 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 14:29:18,460 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 521 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:18,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 827 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 14:29:18,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2025-01-09 14:29:18,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 587. [2025-01-09 14:29:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 437 states have (on average 1.3615560640732265) internal successors, (595), 440 states have internal predecessors, (595), 130 states have call successors, (130), 19 states have call predecessors, (130), 19 states have return successors, (130), 127 states have call predecessors, (130), 130 states have call successors, (130) [2025-01-09 14:29:18,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 855 transitions. [2025-01-09 14:29:18,514 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 855 transitions. Word has length 356 [2025-01-09 14:29:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:18,515 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 855 transitions. [2025-01-09 14:29:18,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2025-01-09 14:29:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 855 transitions. [2025-01-09 14:29:18,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-01-09 14:29:18,520 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:18,520 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:18,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 14:29:18,520 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:18,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:18,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1240230933, now seen corresponding path program 1 times [2025-01-09 14:29:18,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:18,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053253247] [2025-01-09 14:29:18,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:18,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:18,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-01-09 14:29:18,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-01-09 14:29:18,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:18,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 123 proven. 42 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:29:19,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053253247] [2025-01-09 14:29:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053253247] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:29:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241078550] [2025-01-09 14:29:19,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:19,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:19,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:29:19,521 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 14:29:19,523 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 14:29:19,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-01-09 14:29:19,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-01-09 14:29:19,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:19,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:19,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 14:29:19,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:29:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2559 proven. 45 refuted. 0 times theorem prover too weak. 3556 trivial. 0 not checked. [2025-01-09 14:29:19,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:29:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 279 proven. 48 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-01-09 14:29:20,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241078550] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:29:20,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:29:20,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 20 [2025-01-09 14:29:20,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054122810] [2025-01-09 14:29:20,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:29:20,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 14:29:20,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:20,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 14:29:20,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2025-01-09 14:29:20,306 INFO L87 Difference]: Start difference. First operand 587 states and 855 transitions. Second operand has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 5 states have call successors, (126), 3 states have call predecessors, (126), 7 states have return successors, (127), 5 states have call predecessors, (127), 5 states have call successors, (127) [2025-01-09 14:29:21,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:21,089 INFO L93 Difference]: Finished difference Result 1133 states and 1646 transitions. [2025-01-09 14:29:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 14:29:21,090 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 5 states have call successors, (126), 3 states have call predecessors, (126), 7 states have return successors, (127), 5 states have call predecessors, (127), 5 states have call successors, (127) Word has length 356 [2025-01-09 14:29:21,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:21,094 INFO L225 Difference]: With dead ends: 1133 [2025-01-09 14:29:21,094 INFO L226 Difference]: Without dead ends: 611 [2025-01-09 14:29:21,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 703 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 14:29:21,096 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 512 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:21,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1215 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 14:29:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2025-01-09 14:29:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 595. [2025-01-09 14:29:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 443 states have (on average 1.325056433408578) internal successors, (587), 446 states have internal predecessors, (587), 130 states have call successors, (130), 21 states have call predecessors, (130), 21 states have return successors, (130), 127 states have call predecessors, (130), 130 states have call successors, (130) [2025-01-09 14:29:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 847 transitions. [2025-01-09 14:29:21,151 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 847 transitions. Word has length 356 [2025-01-09 14:29:21,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:21,152 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 847 transitions. [2025-01-09 14:29:21,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.5) internal successors, (150), 20 states have internal predecessors, (150), 5 states have call successors, (126), 3 states have call predecessors, (126), 7 states have return successors, (127), 5 states have call predecessors, (127), 5 states have call successors, (127) [2025-01-09 14:29:21,152 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 847 transitions. [2025-01-09 14:29:21,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-01-09 14:29:21,154 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:21,154 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:21,163 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 14:29:21,355 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,SelfDestructingSolverStorable7 [2025-01-09 14:29:21,355 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:21,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:21,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1403230310, now seen corresponding path program 1 times [2025-01-09 14:29:21,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:21,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921753288] [2025-01-09 14:29:21,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:21,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:21,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-01-09 14:29:21,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-01-09 14:29:21,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:21,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-01-09 14:29:21,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:21,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921753288] [2025-01-09 14:29:21,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921753288] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:29:21,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:29:21,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 14:29:21,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330249202] [2025-01-09 14:29:21,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:29:21,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 14:29:21,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:21,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 14:29:21,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-09 14:29:21,839 INFO L87 Difference]: Start difference. First operand 595 states and 847 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2025-01-09 14:29:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:22,655 INFO L93 Difference]: Finished difference Result 2499 states and 3592 transitions. [2025-01-09 14:29:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 14:29:22,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) Word has length 356 [2025-01-09 14:29:22,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:22,667 INFO L225 Difference]: With dead ends: 2499 [2025-01-09 14:29:22,667 INFO L226 Difference]: Without dead ends: 1969 [2025-01-09 14:29:22,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-01-09 14:29:22,670 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 812 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:22,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1934 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 14:29:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2025-01-09 14:29:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1520. [2025-01-09 14:29:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1152 states have (on average 1.3385416666666667) internal successors, (1542), 1160 states have internal predecessors, (1542), 318 states have call successors, (318), 49 states have call predecessors, (318), 49 states have return successors, (318), 310 states have call predecessors, (318), 318 states have call successors, (318) [2025-01-09 14:29:22,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2178 transitions. [2025-01-09 14:29:22,794 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 2178 transitions. Word has length 356 [2025-01-09 14:29:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:22,794 INFO L471 AbstractCegarLoop]: Abstraction has 1520 states and 2178 transitions. [2025-01-09 14:29:22,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 4 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2025-01-09 14:29:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 2178 transitions. [2025-01-09 14:29:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2025-01-09 14:29:22,797 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:22,797 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:22,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 14:29:22,798 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:22,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash -25179923, now seen corresponding path program 1 times [2025-01-09 14:29:22,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:22,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870508456] [2025-01-09 14:29:22,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:22,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:22,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-01-09 14:29:22,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-01-09 14:29:22,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:22,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:29:23,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:23,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870508456] [2025-01-09 14:29:23,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870508456] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:29:23,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357043978] [2025-01-09 14:29:23,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:23,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:23,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:29:23,239 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 14:29:23,244 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 14:29:23,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-01-09 14:29:23,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-01-09 14:29:23,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:23,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:23,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 14:29:23,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:29:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2742 proven. 198 refuted. 0 times theorem prover too weak. 3220 trivial. 0 not checked. [2025-01-09 14:29:24,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:29:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:29:24,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357043978] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:29:24,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:29:24,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 7] total 15 [2025-01-09 14:29:24,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035555042] [2025-01-09 14:29:24,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:29:24,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 14:29:24,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:24,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 14:29:24,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-01-09 14:29:24,369 INFO L87 Difference]: Start difference. First operand 1520 states and 2178 transitions. Second operand has 15 states, 15 states have (on average 9.6) internal successors, (144), 15 states have internal predecessors, (144), 4 states have call successors, (162), 3 states have call predecessors, (162), 6 states have return successors, (163), 4 states have call predecessors, (163), 4 states have call successors, (163) [2025-01-09 14:29:25,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:25,413 INFO L93 Difference]: Finished difference Result 3939 states and 5632 transitions. [2025-01-09 14:29:25,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 14:29:25,414 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.6) internal successors, (144), 15 states have internal predecessors, (144), 4 states have call successors, (162), 3 states have call predecessors, (162), 6 states have return successors, (163), 4 states have call predecessors, (163), 4 states have call successors, (163) Word has length 357 [2025-01-09 14:29:25,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:25,428 INFO L225 Difference]: With dead ends: 3939 [2025-01-09 14:29:25,428 INFO L226 Difference]: Without dead ends: 2484 [2025-01-09 14:29:25,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2025-01-09 14:29:25,433 INFO L435 NwaCegarLoop]: 289 mSDtfsCounter, 1211 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:25,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 1529 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 14:29:25,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2025-01-09 14:29:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 1444. [2025-01-09 14:29:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1095 states have (on average 1.3388127853881278) internal successors, (1466), 1102 states have internal predecessors, (1466), 298 states have call successors, (298), 50 states have call predecessors, (298), 50 states have return successors, (298), 291 states have call predecessors, (298), 298 states have call successors, (298) [2025-01-09 14:29:25,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2062 transitions. [2025-01-09 14:29:25,639 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2062 transitions. Word has length 357 [2025-01-09 14:29:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:25,640 INFO L471 AbstractCegarLoop]: Abstraction has 1444 states and 2062 transitions. [2025-01-09 14:29:25,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.6) internal successors, (144), 15 states have internal predecessors, (144), 4 states have call successors, (162), 3 states have call predecessors, (162), 6 states have return successors, (163), 4 states have call predecessors, (163), 4 states have call successors, (163) [2025-01-09 14:29:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2062 transitions. [2025-01-09 14:29:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2025-01-09 14:29:25,643 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:25,644 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:25,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 14:29:25,844 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,SelfDestructingSolverStorable9 [2025-01-09 14:29:25,845 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:25,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:25,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1054539221, now seen corresponding path program 1 times [2025-01-09 14:29:25,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:25,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919402489] [2025-01-09 14:29:25,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:25,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:25,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-01-09 14:29:26,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-01-09 14:29:26,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:26,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 138 proven. 186 refuted. 0 times theorem prover too weak. 5836 trivial. 0 not checked. [2025-01-09 14:29:26,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:26,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919402489] [2025-01-09 14:29:26,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919402489] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:29:26,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501784321] [2025-01-09 14:29:26,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:26,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:26,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:29:26,577 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 14:29:26,580 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 14:29:26,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-01-09 14:29:26,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-01-09 14:29:26,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:26,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:26,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 14:29:26,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:29:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3955 proven. 234 refuted. 0 times theorem prover too weak. 1971 trivial. 0 not checked. [2025-01-09 14:29:27,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:29:28,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501784321] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:29:28,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 14:29:28,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2025-01-09 14:29:28,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709339255] [2025-01-09 14:29:28,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 14:29:28,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 14:29:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:28,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 14:29:28,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2025-01-09 14:29:28,244 INFO L87 Difference]: Start difference. First operand 1444 states and 2062 transitions. Second operand has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 8 states have call successors, (112), 5 states have call predecessors, (112), 8 states have return successors, (112), 8 states have call predecessors, (112), 8 states have call successors, (112) [2025-01-09 14:29:29,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:29,404 INFO L93 Difference]: Finished difference Result 2922 states and 4128 transitions. [2025-01-09 14:29:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 14:29:29,405 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 8 states have call successors, (112), 5 states have call predecessors, (112), 8 states have return successors, (112), 8 states have call predecessors, (112), 8 states have call successors, (112) Word has length 357 [2025-01-09 14:29:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:29,411 INFO L225 Difference]: With dead ends: 2922 [2025-01-09 14:29:29,411 INFO L226 Difference]: Without dead ends: 1543 [2025-01-09 14:29:29,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=1095, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 14:29:29,415 INFO L435 NwaCegarLoop]: 288 mSDtfsCounter, 705 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:29,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 2201 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 14:29:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2025-01-09 14:29:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1328. [2025-01-09 14:29:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 998 states have (on average 1.3216432865731462) internal successors, (1319), 1004 states have internal predecessors, (1319), 272 states have call successors, (272), 57 states have call predecessors, (272), 57 states have return successors, (272), 266 states have call predecessors, (272), 272 states have call successors, (272) [2025-01-09 14:29:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1863 transitions. [2025-01-09 14:29:29,560 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1863 transitions. Word has length 357 [2025-01-09 14:29:29,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:29,560 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 1863 transitions. [2025-01-09 14:29:29,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.368421052631579) internal successors, (140), 18 states have internal predecessors, (140), 8 states have call successors, (112), 5 states have call predecessors, (112), 8 states have return successors, (112), 8 states have call predecessors, (112), 8 states have call successors, (112) [2025-01-09 14:29:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1863 transitions. [2025-01-09 14:29:29,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2025-01-09 14:29:29,562 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:29,563 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:29,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 14:29:29,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-09 14:29:29,763 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:29,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1806588786, now seen corresponding path program 1 times [2025-01-09 14:29:29,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:29,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984873528] [2025-01-09 14:29:29,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:29,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:29,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 358 statements into 1 equivalence classes. [2025-01-09 14:29:29,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 358 of 358 statements. [2025-01-09 14:29:29,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:29,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 12 proven. 153 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:29:30,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984873528] [2025-01-09 14:29:30,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984873528] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:29:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044125445] [2025-01-09 14:29:30,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:30,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:30,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:29:30,367 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 14:29:30,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 14:29:30,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 358 statements into 1 equivalence classes. [2025-01-09 14:29:30,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 358 of 358 statements. [2025-01-09 14:29:30,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:30,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:30,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 14:29:30,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:29:31,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 932 proven. 300 refuted. 0 times theorem prover too weak. 4928 trivial. 0 not checked. [2025-01-09 14:29:31,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:29:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 12 proven. 153 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:29:31,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044125445] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:29:31,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:29:31,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 14 [2025-01-09 14:29:31,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879899980] [2025-01-09 14:29:31,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:29:31,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 14:29:31,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:31,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 14:29:31,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-01-09 14:29:31,792 INFO L87 Difference]: Start difference. First operand 1328 states and 1863 transitions. Second operand has 14 states, 14 states have (on average 10.357142857142858) internal successors, (145), 13 states have internal predecessors, (145), 4 states have call successors, (107), 3 states have call predecessors, (107), 5 states have return successors, (109), 4 states have call predecessors, (109), 4 states have call successors, (109) [2025-01-09 14:29:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:29:33,273 INFO L93 Difference]: Finished difference Result 5377 states and 7329 transitions. [2025-01-09 14:29:33,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-01-09 14:29:33,274 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.357142857142858) internal successors, (145), 13 states have internal predecessors, (145), 4 states have call successors, (107), 3 states have call predecessors, (107), 5 states have return successors, (109), 4 states have call predecessors, (109), 4 states have call successors, (109) Word has length 358 [2025-01-09 14:29:33,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:29:33,287 INFO L225 Difference]: With dead ends: 5377 [2025-01-09 14:29:33,287 INFO L226 Difference]: Without dead ends: 4122 [2025-01-09 14:29:33,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 713 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 14:29:33,290 INFO L435 NwaCegarLoop]: 397 mSDtfsCounter, 912 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 14:29:33,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1861 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 14:29:33,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2025-01-09 14:29:33,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 2905. [2025-01-09 14:29:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2201 states have (on average 1.2730577010449795) internal successors, (2802), 2218 states have internal predecessors, (2802), 542 states have call successors, (542), 161 states have call predecessors, (542), 161 states have return successors, (542), 525 states have call predecessors, (542), 542 states have call successors, (542) [2025-01-09 14:29:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3886 transitions. [2025-01-09 14:29:33,663 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3886 transitions. Word has length 358 [2025-01-09 14:29:33,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:29:33,664 INFO L471 AbstractCegarLoop]: Abstraction has 2905 states and 3886 transitions. [2025-01-09 14:29:33,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.357142857142858) internal successors, (145), 13 states have internal predecessors, (145), 4 states have call successors, (107), 3 states have call predecessors, (107), 5 states have return successors, (109), 4 states have call predecessors, (109), 4 states have call successors, (109) [2025-01-09 14:29:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3886 transitions. [2025-01-09 14:29:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2025-01-09 14:29:33,668 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:29:33,668 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:33,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 14:29:33,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:33,872 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:29:33,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:29:33,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1931308057, now seen corresponding path program 1 times [2025-01-09 14:29:33,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:29:33,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099601230] [2025-01-09 14:29:33,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:33,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:29:33,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-01-09 14:29:34,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-01-09 14:29:34,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:34,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:29:34,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947397811] [2025-01-09 14:29:34,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:29:34,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:29:34,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:29:34,226 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 14:29:34,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 14:29:34,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-01-09 14:29:34,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-01-09 14:29:34,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:29:34,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:29:34,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 14:29:34,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:29:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 800 proven. 453 refuted. 0 times theorem prover too weak. 4907 trivial. 0 not checked. [2025-01-09 14:29:35,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:29:54,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:29:54,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099601230] [2025-01-09 14:29:54,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 14:29:54,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947397811] [2025-01-09 14:29:54,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947397811] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:29:54,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:29:54,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2025-01-09 14:29:54,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928784867] [2025-01-09 14:29:54,290 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 14:29:54,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 14:29:54,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:29:54,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 14:29:54,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=244, Unknown=4, NotChecked=0, Total=306 [2025-01-09 14:29:54,291 INFO L87 Difference]: Start difference. First operand 2905 states and 3886 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (56), 4 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2025-01-09 14:30:01,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:30:01,873 INFO L93 Difference]: Finished difference Result 6266 states and 8325 transitions. [2025-01-09 14:30:01,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 14:30:01,873 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (56), 4 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) Word has length 359 [2025-01-09 14:30:01,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:30:01,886 INFO L225 Difference]: With dead ends: 6266 [2025-01-09 14:30:01,887 INFO L226 Difference]: Without dead ends: 3442 [2025-01-09 14:30:01,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=117, Invalid=431, Unknown=4, NotChecked=0, Total=552 [2025-01-09 14:30:01,892 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 332 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2025-01-09 14:30:01,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1604 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2025-01-09 14:30:01,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2025-01-09 14:30:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 2513. [2025-01-09 14:30:02,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 1842 states have (on average 1.256243213897937) internal successors, (2314), 1853 states have internal predecessors, (2314), 518 states have call successors, (518), 152 states have call predecessors, (518), 152 states have return successors, (518), 507 states have call predecessors, (518), 518 states have call successors, (518) [2025-01-09 14:30:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 3350 transitions. [2025-01-09 14:30:02,220 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 3350 transitions. Word has length 359 [2025-01-09 14:30:02,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:30:02,220 INFO L471 AbstractCegarLoop]: Abstraction has 2513 states and 3350 transitions. [2025-01-09 14:30:02,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (56), 4 states have call predecessors, (56), 6 states have return successors, (56), 4 states have call predecessors, (56), 4 states have call successors, (56) [2025-01-09 14:30:02,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 3350 transitions. [2025-01-09 14:30:02,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-01-09 14:30:02,225 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:30:02,225 INFO L218 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:30:02,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 14:30:02,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:30:02,426 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:30:02,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:30:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash 761455657, now seen corresponding path program 1 times [2025-01-09 14:30:02,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:30:02,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830137353] [2025-01-09 14:30:02,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:30:02,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:30:02,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-01-09 14:30:02,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-01-09 14:30:02,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:30:02,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:30:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 75 proven. 90 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:30:03,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:30:03,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830137353] [2025-01-09 14:30:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830137353] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:30:03,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693946413] [2025-01-09 14:30:03,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:30:03,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:30:03,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:30:03,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 14:30:03,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 14:30:03,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-01-09 14:30:03,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-01-09 14:30:03,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:30:03,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:30:03,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 14:30:03,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:30:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3105 proven. 90 refuted. 0 times theorem prover too weak. 2965 trivial. 0 not checked. [2025-01-09 14:30:09,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:30:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 75 proven. 90 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-01-09 14:30:13,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693946413] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:30:13,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:30:13,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 20 [2025-01-09 14:30:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985984524] [2025-01-09 14:30:13,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:30:13,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 14:30:13,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:30:13,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 14:30:13,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-01-09 14:30:13,007 INFO L87 Difference]: Start difference. First operand 2513 states and 3350 transitions. Second operand has 20 states, 20 states have (on average 11.45) internal successors, (229), 20 states have internal predecessors, (229), 6 states have call successors, (168), 3 states have call predecessors, (168), 6 states have return successors, (168), 6 states have call predecessors, (168), 6 states have call successors, (168)