./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 c00e63dc 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-?-c00e63d-m [2025-02-06 02:22:38,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:22:38,877 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:22:38,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:22:38,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:22:38,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:22:38,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:22:38,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:22:38,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:22:38,909 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:22:38,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:22:38,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:22:38,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:22:38,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:22:38,911 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:22:38,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:22:38,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:22:38,911 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:22:38,912 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:22:38,912 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:22:38,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:22:38,913 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:22:38,913 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:22:38,913 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:22:38,913 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:22:38,914 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:22:38,914 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:22:38,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:22:38,914 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:22:38,914 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:22:38,914 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:22:38,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:22:38,914 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 [2025-02-06 02:22:39,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:22:39,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:22:39,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:22:39,185 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:22:39,185 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:22:39,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-83.i [2025-02-06 02:22:40,421 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/748dcffb9/862be17834f24d1eabe4107ac6221e6b/FLAG07d08e36c [2025-02-06 02:22:40,736 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:22:40,737 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-83.i [2025-02-06 02:22:40,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/748dcffb9/862be17834f24d1eabe4107ac6221e6b/FLAG07d08e36c [2025-02-06 02:22:40,757 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/748dcffb9/862be17834f24d1eabe4107ac6221e6b [2025-02-06 02:22:40,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:22:40,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:22:40,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:22:40,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:22:40,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:22:40,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:22:40" (1/1) ... [2025-02-06 02:22:40,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42401383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:40, skipping insertion in model container [2025-02-06 02:22:40,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:22:40" (1/1) ... [2025-02-06 02:22:40,795 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:22:40,921 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] [2025-02-06 02:22:41,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:22:41,079 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:22:41,086 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] [2025-02-06 02:22:41,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:22:41,143 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:22:41,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41 WrapperNode [2025-02-06 02:22:41,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:22:41,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:22:41,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:22:41,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:22:41,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,241 INFO L138 Inliner]: procedures = 26, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 449 [2025-02-06 02:22:41,242 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:22:41,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:22:41,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:22:41,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:22:41,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,264 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,302 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]. [2025-02-06 02:22:41,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,326 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:22:41,365 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:22:41,365 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:22:41,365 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:22:41,366 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (1/1) ... [2025-02-06 02:22:41,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:22:41,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:22:41,390 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) [2025-02-06 02:22:41,400 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 [2025-02-06 02:22:41,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:22:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:22:41,416 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:22:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:22:41,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:22:41,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:22:41,491 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:22:41,493 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:22:42,128 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L353: havoc property_#t~bitwise38#1;havoc property_#t~short39#1;havoc property_#t~ite43#1;havoc property_#t~ite42#1;havoc property_#t~bitwise40#1;havoc property_#t~bitwise41#1;havoc property_#t~short44#1;havoc property_#t~ite47#1;havoc property_#t~ite46#1;havoc property_#t~bitwise45#1;havoc property_#t~short48#1; [2025-02-06 02:22:42,185 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2025-02-06 02:22:42,185 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:22:42,208 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:22:42,208 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:22:42,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:22:42 BoogieIcfgContainer [2025-02-06 02:22:42,208 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:22:42,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:22:42,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:22:42,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:22:42,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:22:40" (1/3) ... [2025-02-06 02:22:42,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0e9a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:22:42, skipping insertion in model container [2025-02-06 02:22:42,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:22:41" (2/3) ... [2025-02-06 02:22:42,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0e9a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:22:42, skipping insertion in model container [2025-02-06 02:22:42,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:22:42" (3/3) ... [2025-02-06 02:22:42,216 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-83.i [2025-02-06 02:22:42,228 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:22:42,230 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. [2025-02-06 02:22:42,277 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:22:42,286 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;@72e967bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:22:42,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:22:42,291 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) [2025-02-06 02:22:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-02-06 02:22:42,305 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:22:42,305 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] [2025-02-06 02:22:42,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:22:42,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:22:42,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2042278283, now seen corresponding path program 1 times [2025-02-06 02:22:42,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:22:42,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377192563] [2025-02-06 02:22:42,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:42,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:22:42,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-02-06 02:22:42,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-02-06 02:22:42,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:42,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-02-06 02:22:42,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:22:42,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377192563] [2025-02-06 02:22:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377192563] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:22:43,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:22:43,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:22:43,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413570842] [2025-02-06 02:22:43,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:22:43,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:22:43,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:22:43,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:22:43,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:22:43,024 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) [2025-02-06 02:22:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:22:43,179 INFO L93 Difference]: Finished difference Result 526 states and 953 transitions. [2025-02-06 02:22:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:22:43,182 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 [2025-02-06 02:22:43,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:22:43,194 INFO L225 Difference]: With dead ends: 526 [2025-02-06 02:22:43,194 INFO L226 Difference]: Without dead ends: 341 [2025-02-06 02:22:43,200 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 [2025-02-06 02:22:43,204 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 241 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:22:43,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 552 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:22:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2025-02-06 02:22:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 338. [2025-02-06 02:22:43,298 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) [2025-02-06 02:22:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 539 transitions. [2025-02-06 02:22:43,307 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 539 transitions. Word has length 353 [2025-02-06 02:22:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:22:43,310 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 539 transitions. [2025-02-06 02:22:43,311 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) [2025-02-06 02:22:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 539 transitions. [2025-02-06 02:22:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-02-06 02:22:43,318 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:22:43,319 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] [2025-02-06 02:22:43,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 02:22:43,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:22:43,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:22:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1349176586, now seen corresponding path program 1 times [2025-02-06 02:22:43,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:22:43,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200627608] [2025-02-06 02:22:43,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:43,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:22:43,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-02-06 02:22:43,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-02-06 02:22:43,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:43,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-02-06 02:22:43,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:22:43,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200627608] [2025-02-06 02:22:43,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200627608] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:22:43,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:22:43,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:22:43,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541883673] [2025-02-06 02:22:43,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:22:43,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:22:43,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:22:43,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:22:43,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:22:43,568 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) [2025-02-06 02:22:43,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:22:43,763 INFO L93 Difference]: Finished difference Result 1000 states and 1595 transitions. [2025-02-06 02:22:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:22:43,763 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 [2025-02-06 02:22:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:22:43,771 INFO L225 Difference]: With dead ends: 1000 [2025-02-06 02:22:43,772 INFO L226 Difference]: Without dead ends: 665 [2025-02-06 02:22:43,774 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 [2025-02-06 02:22:43,776 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 272 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:22:43,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 726 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:22:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2025-02-06 02:22:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 362. [2025-02-06 02:22:43,830 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) [2025-02-06 02:22:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 574 transitions. [2025-02-06 02:22:43,836 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 574 transitions. Word has length 353 [2025-02-06 02:22:43,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:22:43,838 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 574 transitions. [2025-02-06 02:22:43,838 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) [2025-02-06 02:22:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 574 transitions. [2025-02-06 02:22:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-02-06 02:22:43,843 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:22:43,843 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] [2025-02-06 02:22:43,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:22:43,844 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:22:43,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:22:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 762113783, now seen corresponding path program 1 times [2025-02-06 02:22:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:22:43,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886168677] [2025-02-06 02:22:43,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:43,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:22:43,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 353 statements into 1 equivalence classes. [2025-02-06 02:22:43,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 353 of 353 statements. [2025-02-06 02:22:43,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:43,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-02-06 02:22:44,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:22:44,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886168677] [2025-02-06 02:22:44,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886168677] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:22:44,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:22:44,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:22:44,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146945028] [2025-02-06 02:22:44,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:22:44,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:22:44,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:22:44,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:22:44,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:22:44,099 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) [2025-02-06 02:22:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:22:44,225 INFO L93 Difference]: Finished difference Result 1024 states and 1624 transitions. [2025-02-06 02:22:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:22:44,226 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 [2025-02-06 02:22:44,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:22:44,233 INFO L225 Difference]: With dead ends: 1024 [2025-02-06 02:22:44,233 INFO L226 Difference]: Without dead ends: 665 [2025-02-06 02:22:44,235 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 [2025-02-06 02:22:44,237 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 280 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:22:44,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 633 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:22:44,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2025-02-06 02:22:44,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 362. [2025-02-06 02:22:44,285 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) [2025-02-06 02:22:44,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 570 transitions. [2025-02-06 02:22:44,289 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 570 transitions. Word has length 353 [2025-02-06 02:22:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:22:44,290 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 570 transitions. [2025-02-06 02:22:44,291 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) [2025-02-06 02:22:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 570 transitions. [2025-02-06 02:22:44,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-02-06 02:22:44,295 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:22:44,295 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] [2025-02-06 02:22:44,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:22:44,295 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:22:44,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:22:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash 263552450, now seen corresponding path program 1 times [2025-02-06 02:22:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:22:44,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579354057] [2025-02-06 02:22:44,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:44,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:22:44,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-02-06 02:22:44,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-02-06 02:22:44,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:44,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-02-06 02:22:45,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:22:45,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579354057] [2025-02-06 02:22:45,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579354057] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:22:45,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825353159] [2025-02-06 02:22:45,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:45,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:22:45,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:22:45,850 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) [2025-02-06 02:22:45,851 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 [2025-02-06 02:22:45,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 354 statements into 1 equivalence classes. [2025-02-06 02:22:46,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 354 of 354 statements. [2025-02-06 02:22:46,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:46,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:46,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 02:22:46,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:22:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3222 proven. 246 refuted. 0 times theorem prover too weak. 2692 trivial. 0 not checked. [2025-02-06 02:22:47,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:22:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 78 proven. 249 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-02-06 02:22:47,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825353159] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:22:47,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:22:47,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 26 [2025-02-06 02:22:47,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454678688] [2025-02-06 02:22:47,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:22:47,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 02:22:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:22:47,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 02:22:47,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2025-02-06 02:22:47,828 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) [2025-02-06 02:22:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:22:51,926 INFO L93 Difference]: Finished difference Result 1741 states and 2597 transitions. [2025-02-06 02:22:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2025-02-06 02:22:51,927 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 [2025-02-06 02:22:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:22:51,935 INFO L225 Difference]: With dead ends: 1741 [2025-02-06 02:22:51,935 INFO L226 Difference]: Without dead ends: 1382 [2025-02-06 02:22:51,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2582 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1772, Invalid=6600, Unknown=0, NotChecked=0, Total=8372 [2025-02-06 02:22:51,940 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 1787 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 2941 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 3676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:22:51,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 2123 Invalid, 3676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 2941 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-06 02:22:51,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2025-02-06 02:22:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 852. [2025-02-06 02:22:52,037 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) [2025-02-06 02:22:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1282 transitions. [2025-02-06 02:22:52,043 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1282 transitions. Word has length 354 [2025-02-06 02:22:52,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:22:52,044 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1282 transitions. [2025-02-06 02:22:52,044 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) [2025-02-06 02:22:52,044 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1282 transitions. [2025-02-06 02:22:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2025-02-06 02:22:52,048 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:22:52,049 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] [2025-02-06 02:22:52,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 02:22:52,249 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 [2025-02-06 02:22:52,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:22:52,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:22:52,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1430004118, now seen corresponding path program 1 times [2025-02-06 02:22:52,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:22:52,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519773637] [2025-02-06 02:22:52,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:52,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:22:52,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-02-06 02:22:52,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-02-06 02:22:52,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:52,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 126 proven. 39 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-02-06 02:22:52,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:22:52,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519773637] [2025-02-06 02:22:52,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519773637] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:22:52,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175778740] [2025-02-06 02:22:52,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:52,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:22:52,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:22:52,840 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) [2025-02-06 02:22:52,845 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 [2025-02-06 02:22:52,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 355 statements into 1 equivalence classes. [2025-02-06 02:22:52,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 355 of 355 statements. [2025-02-06 02:22:52,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:52,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:53,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 02:22:53,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:22:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2323 proven. 39 refuted. 0 times theorem prover too weak. 3798 trivial. 0 not checked. [2025-02-06 02:22:53,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:22:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 126 proven. 39 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-02-06 02:22:53,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175778740] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:22:53,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:22:53,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-02-06 02:22:53,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387595670] [2025-02-06 02:22:53,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:22:53,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 02:22:53,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:22:53,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 02:22:53,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:22:53,413 INFO L87 Difference]: Start difference. First operand 852 states and 1282 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) [2025-02-06 02:22:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:22:53,975 INFO L93 Difference]: Finished difference Result 1396 states and 2088 transitions. [2025-02-06 02:22:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 02:22:53,976 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 [2025-02-06 02:22:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:22:53,981 INFO L225 Difference]: With dead ends: 1396 [2025-02-06 02:22:53,983 INFO L226 Difference]: Without dead ends: 547 [2025-02-06 02:22:53,985 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 [2025-02-06 02:22:53,988 INFO L435 NwaCegarLoop]: 289 mSDtfsCounter, 209 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 02:22:53,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 758 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 02:22:53,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2025-02-06 02:22:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 532. [2025-02-06 02:22:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 371 states have (on average 1.3396226415094339) internal successors, (497), 374 states have internal predecessors, (497), 146 states have call successors, (146), 14 states have call predecessors, (146), 14 states have return successors, (146), 143 states have call predecessors, (146), 146 states have call successors, (146) [2025-02-06 02:22:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 789 transitions. [2025-02-06 02:22:54,036 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 789 transitions. Word has length 355 [2025-02-06 02:22:54,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:22:54,037 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 789 transitions. [2025-02-06 02:22:54,037 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) [2025-02-06 02:22:54,038 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 789 transitions. [2025-02-06 02:22:54,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-02-06 02:22:54,042 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:22:54,042 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] [2025-02-06 02:22:54,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 02:22:54,242 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 [2025-02-06 02:22:54,243 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:22:54,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:22:54,244 INFO L85 PathProgramCache]: Analyzing trace with hash 397178728, now seen corresponding path program 1 times [2025-02-06 02:22:54,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:22:54,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128584061] [2025-02-06 02:22:54,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:54,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:22:54,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-02-06 02:22:54,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-02-06 02:22:54,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:54,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-02-06 02:22:54,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:22:54,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128584061] [2025-02-06 02:22:54,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128584061] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:22:54,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:22:54,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 02:22:54,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422931767] [2025-02-06 02:22:54,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:22:54,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 02:22:54,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:22:54,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 02:22:54,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 02:22:54,963 INFO L87 Difference]: Start difference. First operand 532 states and 789 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) [2025-02-06 02:22:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:22:55,714 INFO L93 Difference]: Finished difference Result 2216 states and 3296 transitions. [2025-02-06 02:22:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 02:22:55,715 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 [2025-02-06 02:22:55,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:22:55,722 INFO L225 Difference]: With dead ends: 2216 [2025-02-06 02:22:55,722 INFO L226 Difference]: Without dead ends: 1773 [2025-02-06 02:22:55,724 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 [2025-02-06 02:22:55,724 INFO L435 NwaCegarLoop]: 349 mSDtfsCounter, 1111 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:22:55,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1347 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 02:22:55,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2025-02-06 02:22:55,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1378. [2025-02-06 02:22:55,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1011 states have (on average 1.3699307616221563) internal successors, (1385), 1019 states have internal predecessors, (1385), 334 states have call successors, (334), 32 states have call predecessors, (334), 32 states have return successors, (334), 326 states have call predecessors, (334), 334 states have call successors, (334) [2025-02-06 02:22:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 2053 transitions. [2025-02-06 02:22:55,835 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 2053 transitions. Word has length 356 [2025-02-06 02:22:55,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:22:55,836 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 2053 transitions. [2025-02-06 02:22:55,836 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) [2025-02-06 02:22:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 2053 transitions. [2025-02-06 02:22:55,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-02-06 02:22:55,841 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:22:55,842 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] [2025-02-06 02:22:55,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 02:22:55,842 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:22:55,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:22:55,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1947488313, now seen corresponding path program 1 times [2025-02-06 02:22:55,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:22:55,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738665483] [2025-02-06 02:22:55,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:55,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:22:55,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-02-06 02:22:55,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-02-06 02:22:55,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:55,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:56,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2025-02-06 02:22:56,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:22:56,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738665483] [2025-02-06 02:22:56,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738665483] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:22:56,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:22:56,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:22:56,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994498980] [2025-02-06 02:22:56,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:22:56,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:22:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:22:56,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:22:56,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:22:56,258 INFO L87 Difference]: Start difference. First operand 1378 states and 2053 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) [2025-02-06 02:22:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:22:56,747 INFO L93 Difference]: Finished difference Result 3414 states and 5091 transitions. [2025-02-06 02:22:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:22:56,748 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 [2025-02-06 02:22:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:22:56,763 INFO L225 Difference]: With dead ends: 3414 [2025-02-06 02:22:56,764 INFO L226 Difference]: Without dead ends: 2129 [2025-02-06 02:22:56,768 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 [2025-02-06 02:22:56,770 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 524 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:22:56,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 813 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:22:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2025-02-06 02:22:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1368. [2025-02-06 02:22:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 999 states have (on average 1.3653653653653655) internal successors, (1364), 1007 states have internal predecessors, (1364), 334 states have call successors, (334), 34 states have call predecessors, (334), 34 states have return successors, (334), 326 states have call predecessors, (334), 334 states have call successors, (334) [2025-02-06 02:22:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2032 transitions. [2025-02-06 02:22:56,936 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2032 transitions. Word has length 356 [2025-02-06 02:22:56,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:22:56,938 INFO L471 AbstractCegarLoop]: Abstraction has 1368 states and 2032 transitions. [2025-02-06 02:22:56,938 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) [2025-02-06 02:22:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2032 transitions. [2025-02-06 02:22:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-02-06 02:22:56,942 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:22:56,943 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] [2025-02-06 02:22:56,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 02:22:56,943 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:22:56,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:22:56,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1047520900, now seen corresponding path program 1 times [2025-02-06 02:22:56,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:22:56,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153768737] [2025-02-06 02:22:56,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:56,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:22:56,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-02-06 02:22:57,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-02-06 02:22:57,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:57,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 123 proven. 42 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-02-06 02:22:58,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:22:58,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153768737] [2025-02-06 02:22:58,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153768737] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:22:58,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928461019] [2025-02-06 02:22:58,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:22:58,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:22:58,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:22:58,132 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) [2025-02-06 02:22:58,134 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 [2025-02-06 02:22:58,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 356 statements into 1 equivalence classes. [2025-02-06 02:22:58,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 356 of 356 statements. [2025-02-06 02:22:58,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:22:58,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:22:58,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 02:22:58,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:22:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2559 proven. 45 refuted. 0 times theorem prover too weak. 3556 trivial. 0 not checked. [2025-02-06 02:22:58,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:22:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 279 proven. 48 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-02-06 02:22:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928461019] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:22:58,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:22:58,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 20 [2025-02-06 02:22:58,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138096021] [2025-02-06 02:22:58,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:22:58,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 02:22:58,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:22:58,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 02:22:58,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2025-02-06 02:22:58,955 INFO L87 Difference]: Start difference. First operand 1368 states and 2032 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) [2025-02-06 02:23:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:23:00,033 INFO L93 Difference]: Finished difference Result 2703 states and 3990 transitions. [2025-02-06 02:23:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 02:23:00,034 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 [2025-02-06 02:23:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:23:00,043 INFO L225 Difference]: With dead ends: 2703 [2025-02-06 02:23:00,043 INFO L226 Difference]: Without dead ends: 1428 [2025-02-06 02:23:00,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 703 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 02:23:00,049 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1112 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 02:23:00,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1011 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 02:23:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2025-02-06 02:23:00,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1381. [2025-02-06 02:23:00,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1010 states have (on average 1.3277227722772278) internal successors, (1341), 1018 states have internal predecessors, (1341), 332 states have call successors, (332), 38 states have call predecessors, (332), 38 states have return successors, (332), 324 states have call predecessors, (332), 332 states have call successors, (332) [2025-02-06 02:23:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2005 transitions. [2025-02-06 02:23:00,167 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2005 transitions. Word has length 356 [2025-02-06 02:23:00,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:23:00,167 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 2005 transitions. [2025-02-06 02:23:00,168 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) [2025-02-06 02:23:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2005 transitions. [2025-02-06 02:23:00,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2025-02-06 02:23:00,171 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:23:00,171 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] [2025-02-06 02:23:00,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 02:23:00,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:23:00,372 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:23:00,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:23:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1017394902, now seen corresponding path program 1 times [2025-02-06 02:23:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:23:00,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478213255] [2025-02-06 02:23:00,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:23:00,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:23:00,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-02-06 02:23:00,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-02-06 02:23:00,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:23:00,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:23:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 6 proven. 159 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-02-06 02:23:00,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:23:00,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478213255] [2025-02-06 02:23:00,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478213255] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:23:00,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418249049] [2025-02-06 02:23:00,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:23:00,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:23:00,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:23:00,962 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) [2025-02-06 02:23:00,969 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 [2025-02-06 02:23:01,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-02-06 02:23:01,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-02-06 02:23:01,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:23:01,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:23:01,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 02:23:01,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:23:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3563 proven. 192 refuted. 0 times theorem prover too weak. 2405 trivial. 0 not checked. [2025-02-06 02:23:01,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:23:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 132 proven. 195 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-02-06 02:23:02,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418249049] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:23:02,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:23:02,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2025-02-06 02:23:02,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101702355] [2025-02-06 02:23:02,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:23:02,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 02:23:02,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:23:02,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 02:23:02,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-02-06 02:23:02,291 INFO L87 Difference]: Start difference. First operand 1381 states and 2005 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 6 states have call successors, (157), 3 states have call predecessors, (157), 7 states have return successors, (159), 6 states have call predecessors, (159), 6 states have call successors, (159) [2025-02-06 02:23:03,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:23:03,215 INFO L93 Difference]: Finished difference Result 2960 states and 4216 transitions. [2025-02-06 02:23:03,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 02:23:03,216 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 6 states have call successors, (157), 3 states have call predecessors, (157), 7 states have return successors, (159), 6 states have call predecessors, (159), 6 states have call successors, (159) Word has length 357 [2025-02-06 02:23:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:23:03,226 INFO L225 Difference]: With dead ends: 2960 [2025-02-06 02:23:03,226 INFO L226 Difference]: Without dead ends: 1669 [2025-02-06 02:23:03,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 706 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2025-02-06 02:23:03,232 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 808 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:23:03,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 951 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 02:23:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2025-02-06 02:23:03,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1366. [2025-02-06 02:23:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1031 states have (on average 1.3191076624636275) internal successors, (1360), 1039 states have internal predecessors, (1360), 278 states have call successors, (278), 56 states have call predecessors, (278), 56 states have return successors, (278), 270 states have call predecessors, (278), 278 states have call successors, (278) [2025-02-06 02:23:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1916 transitions. [2025-02-06 02:23:03,371 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1916 transitions. Word has length 357 [2025-02-06 02:23:03,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:23:03,371 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 1916 transitions. [2025-02-06 02:23:03,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 6 states have call successors, (157), 3 states have call predecessors, (157), 7 states have return successors, (159), 6 states have call predecessors, (159), 6 states have call successors, (159) [2025-02-06 02:23:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1916 transitions. [2025-02-06 02:23:03,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2025-02-06 02:23:03,375 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:23:03,375 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] [2025-02-06 02:23:03,382 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 [2025-02-06 02:23:03,579 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,SelfDestructingSolverStorable8 [2025-02-06 02:23:03,579 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:23:03,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:23:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash 615409097, now seen corresponding path program 1 times [2025-02-06 02:23:03,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:23:03,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016734921] [2025-02-06 02:23:03,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:23:03,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:23:03,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-02-06 02:23:03,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-02-06 02:23:03,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:23:03,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:23:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 138 proven. 186 refuted. 0 times theorem prover too weak. 5836 trivial. 0 not checked. [2025-02-06 02:23:04,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:23:04,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016734921] [2025-02-06 02:23:04,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016734921] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:23:04,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136256203] [2025-02-06 02:23:04,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:23:04,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:23:04,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:23:04,278 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) [2025-02-06 02:23:04,279 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 [2025-02-06 02:23:04,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 357 statements into 1 equivalence classes. [2025-02-06 02:23:04,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 357 of 357 statements. [2025-02-06 02:23:04,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:23:04,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:23:04,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 02:23:04,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:23:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3955 proven. 234 refuted. 0 times theorem prover too weak. 1971 trivial. 0 not checked. [2025-02-06 02:23:05,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:23:06,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136256203] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:23:06,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 02:23:06,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2025-02-06 02:23:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590847981] [2025-02-06 02:23:06,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 02:23:06,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 02:23:06,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:23:06,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 02:23:06,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2025-02-06 02:23:06,078 INFO L87 Difference]: Start difference. First operand 1366 states and 1916 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) [2025-02-06 02:23:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:23:07,344 INFO L93 Difference]: Finished difference Result 2924 states and 4059 transitions. [2025-02-06 02:23:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 02:23:07,345 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 [2025-02-06 02:23:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:23:07,352 INFO L225 Difference]: With dead ends: 2924 [2025-02-06 02:23:07,352 INFO L226 Difference]: Without dead ends: 1660 [2025-02-06 02:23:07,354 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 [2025-02-06 02:23:07,355 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 579 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-06 02:23:07,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1932 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-06 02:23:07,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2025-02-06 02:23:07,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1401. [2025-02-06 02:23:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1052 states have (on average 1.3051330798479088) internal successors, (1373), 1060 states have internal predecessors, (1373), 278 states have call successors, (278), 70 states have call predecessors, (278), 70 states have return successors, (278), 270 states have call predecessors, (278), 278 states have call successors, (278) [2025-02-06 02:23:07,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1929 transitions. [2025-02-06 02:23:07,469 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1929 transitions. Word has length 357 [2025-02-06 02:23:07,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:23:07,471 INFO L471 AbstractCegarLoop]: Abstraction has 1401 states and 1929 transitions. [2025-02-06 02:23:07,471 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) [2025-02-06 02:23:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1929 transitions. [2025-02-06 02:23:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2025-02-06 02:23:07,473 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:23:07,474 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] [2025-02-06 02:23:07,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 02:23:07,678 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 [2025-02-06 02:23:07,678 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:23:07,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:23:07,679 INFO L85 PathProgramCache]: Analyzing trace with hash 627223687, now seen corresponding path program 1 times [2025-02-06 02:23:07,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:23:07,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154164779] [2025-02-06 02:23:07,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:23:07,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:23:07,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 358 statements into 1 equivalence classes. [2025-02-06 02:23:07,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 358 of 358 statements. [2025-02-06 02:23:07,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:23:07,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:23:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 12 proven. 153 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-02-06 02:23:08,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:23:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154164779] [2025-02-06 02:23:08,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154164779] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:23:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570374311] [2025-02-06 02:23:08,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:23:08,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:23:08,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:23:08,208 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) [2025-02-06 02:23:08,209 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 [2025-02-06 02:23:08,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 358 statements into 1 equivalence classes. [2025-02-06 02:23:08,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 358 of 358 statements. [2025-02-06 02:23:08,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:23:08,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:23:08,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 02:23:08,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:23:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 932 proven. 300 refuted. 0 times theorem prover too weak. 4928 trivial. 0 not checked. [2025-02-06 02:23:09,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:23:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 12 proven. 153 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-02-06 02:23:09,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570374311] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:23:09,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:23:09,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 14 [2025-02-06 02:23:09,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076597696] [2025-02-06 02:23:09,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:23:09,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 02:23:09,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:23:09,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 02:23:09,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2025-02-06 02:23:09,868 INFO L87 Difference]: Start difference. First operand 1401 states and 1929 transitions. Second operand has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (159), 4 states have call predecessors, (159), 4 states have call successors, (159) [2025-02-06 02:23:11,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:23:11,625 INFO L93 Difference]: Finished difference Result 5920 states and 7942 transitions. [2025-02-06 02:23:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 02:23:11,629 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (159), 4 states have call predecessors, (159), 4 states have call successors, (159) Word has length 358 [2025-02-06 02:23:11,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:23:11,644 INFO L225 Difference]: With dead ends: 5920 [2025-02-06 02:23:11,644 INFO L226 Difference]: Without dead ends: 4637 [2025-02-06 02:23:11,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=391, Invalid=1015, Unknown=0, NotChecked=0, Total=1406 [2025-02-06 02:23:11,647 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 916 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:23:11,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1520 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 02:23:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4637 states. [2025-02-06 02:23:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4637 to 2648. [2025-02-06 02:23:12,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 1984 states have (on average 1.2661290322580645) internal successors, (2512), 2001 states have internal predecessors, (2512), 508 states have call successors, (508), 155 states have call predecessors, (508), 155 states have return successors, (508), 491 states have call predecessors, (508), 508 states have call successors, (508) [2025-02-06 02:23:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3528 transitions. [2025-02-06 02:23:12,009 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3528 transitions. Word has length 358 [2025-02-06 02:23:12,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:23:12,010 INFO L471 AbstractCegarLoop]: Abstraction has 2648 states and 3528 transitions. [2025-02-06 02:23:12,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (159), 4 states have call predecessors, (159), 4 states have call successors, (159) [2025-02-06 02:23:12,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3528 transitions. [2025-02-06 02:23:12,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2025-02-06 02:23:12,013 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:23:12,013 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] [2025-02-06 02:23:12,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 02:23:12,214 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 [2025-02-06 02:23:12,214 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:23:12,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:23:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash 756244406, now seen corresponding path program 1 times [2025-02-06 02:23:12,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:23:12,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284352317] [2025-02-06 02:23:12,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:23:12,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:23:12,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-02-06 02:23:12,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-02-06 02:23:12,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:23:12,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 02:23:12,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811479862] [2025-02-06 02:23:12,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:23:12,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:23:12,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:23:12,488 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) [2025-02-06 02:23:12,493 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 [2025-02-06 02:23:12,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-02-06 02:23:12,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-02-06 02:23:12,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:23:12,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:23:12,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 02:23:12,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:23:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 800 proven. 453 refuted. 0 times theorem prover too weak. 4907 trivial. 0 not checked. [2025-02-06 02:23:14,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:23:33,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:23:33,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284352317] [2025-02-06 02:23:33,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 02:23:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811479862] [2025-02-06 02:23:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811479862] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:23:33,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:23:33,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2025-02-06 02:23:33,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466561968] [2025-02-06 02:23:33,714 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 02:23:33,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 02:23:33,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:23:33,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 02:23:33,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=244, Unknown=4, NotChecked=0, Total=306 [2025-02-06 02:23:33,715 INFO L87 Difference]: Start difference. First operand 2648 states and 3528 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) [2025-02-06 02:23:41,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:23:41,694 INFO L93 Difference]: Finished difference Result 5318 states and 7045 transitions. [2025-02-06 02:23:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 02:23:41,695 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 [2025-02-06 02:23:41,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:23:41,707 INFO L225 Difference]: With dead ends: 5318 [2025-02-06 02:23:41,707 INFO L226 Difference]: Without dead ends: 2796 [2025-02-06 02:23:41,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=117, Invalid=431, Unknown=4, NotChecked=0, Total=552 [2025-02-06 02:23:41,713 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 573 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:23:41,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1423 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2025-02-06 02:23:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2025-02-06 02:23:41,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2414. [2025-02-06 02:23:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 1786 states have (on average 1.265397536394177) internal successors, (2260), 1797 states have internal predecessors, (2260), 484 states have call successors, (484), 143 states have call predecessors, (484), 143 states have return successors, (484), 473 states have call predecessors, (484), 484 states have call successors, (484) [2025-02-06 02:23:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3228 transitions. [2025-02-06 02:23:41,980 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3228 transitions. Word has length 359 [2025-02-06 02:23:41,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:23:41,983 INFO L471 AbstractCegarLoop]: Abstraction has 2414 states and 3228 transitions. [2025-02-06 02:23:41,983 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) [2025-02-06 02:23:41,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3228 transitions. [2025-02-06 02:23:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2025-02-06 02:23:41,985 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:23:41,986 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] [2025-02-06 02:23:42,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 02:23:42,186 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 [2025-02-06 02:23:42,187 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:23:42,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:23:42,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1795285417, now seen corresponding path program 1 times [2025-02-06 02:23:42,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:23:42,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410140311] [2025-02-06 02:23:42,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:23:42,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:23:42,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-02-06 02:23:42,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-02-06 02:23:42,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:23:42,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:23:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2025-02-06 02:23:43,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:23:43,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410140311] [2025-02-06 02:23:43,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410140311] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:23:43,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625331066] [2025-02-06 02:23:43,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:23:43,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:23:43,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:23:43,156 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) [2025-02-06 02:23:43,157 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 [2025-02-06 02:23:43,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 359 statements into 1 equivalence classes. [2025-02-06 02:23:43,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 359 of 359 statements. [2025-02-06 02:23:43,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:23:43,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:23:43,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 02:23:43,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:23:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2972 proven. 258 refuted. 0 times theorem prover too weak. 2930 trivial. 0 not checked. [2025-02-06 02:23:53,939 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:24:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 66 proven. 261 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2025-02-06 02:24:02,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625331066] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:24:02,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:24:02,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 12] total 26 [2025-02-06 02:24:02,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272810183] [2025-02-06 02:24:02,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:24:02,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 02:24:02,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:24:02,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 02:24:02,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2025-02-06 02:24:02,165 INFO L87 Difference]: Start difference. First operand 2414 states and 3228 transitions. Second operand has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 26 states have internal predecessors, (241), 8 states have call successors, (168), 4 states have call predecessors, (168), 8 states have return successors, (168), 5 states have call predecessors, (168), 8 states have call successors, (168)