./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-57.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_amount100_file-57.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 35897ca10739dfe50f578706614b96ade5d7e66bf9cbebf31dd49bae05c8bb42 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:02:15,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:02:15,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:02:15,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:02:15,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:02:15,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:02:15,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:02:15,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:02:15,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:02:15,692 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:02:15,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:02:15,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:02:15,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:02:15,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:02:15,694 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:02:15,694 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:02:15,694 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:02:15,694 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:02:15,695 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:02:15,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:02:15,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:02:15,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:02:15,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:02:15,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:02:15,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:02:15,696 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:02:15,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:02:15,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:02:15,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:02:15,697 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:02:15,697 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:02:15,697 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:02:15,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:02:15,697 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 -> 35897ca10739dfe50f578706614b96ade5d7e66bf9cbebf31dd49bae05c8bb42 [2025-02-06 02:02:15,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:02:15,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:02:15,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:02:15,956 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:02:15,957 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:02:15,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-57.i [2025-02-06 02:02:17,157 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3956d0cce/f0c53b5feaab447690e92e3f552a0b01/FLAG8bf7158f1 [2025-02-06 02:02:17,410 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:02:17,411 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-57.i [2025-02-06 02:02:17,418 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3956d0cce/f0c53b5feaab447690e92e3f552a0b01/FLAG8bf7158f1 [2025-02-06 02:02:17,430 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3956d0cce/f0c53b5feaab447690e92e3f552a0b01 [2025-02-06 02:02:17,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:02:17,433 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:02:17,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:02:17,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:02:17,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:02:17,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@776d41fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17, skipping insertion in model container [2025-02-06 02:02:17,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,453 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:02:17,543 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_amount100_file-57.i[916,929] [2025-02-06 02:02:17,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:02:17,612 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:02:17,619 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_amount100_file-57.i[916,929] [2025-02-06 02:02:17,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:02:17,669 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:02:17,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17 WrapperNode [2025-02-06 02:02:17,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:02:17,671 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:02:17,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:02:17,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:02:17,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,717 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2025-02-06 02:02:17,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:02:17,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:02:17,718 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:02:17,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:02:17,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,735 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,754 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 02:02:17,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,764 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:02:17,773 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:02:17,773 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:02:17,773 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:02:17,774 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (1/1) ... [2025-02-06 02:02:17,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:02:17,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:02:17,807 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 02:02:17,809 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 02:02:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:02:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:02:17,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:02:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:02:17,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:02:17,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:02:17,881 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:02:17,883 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:02:18,243 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L223: havoc property_#t~bitwise25#1;havoc property_#t~short26#1; [2025-02-06 02:02:18,278 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-02-06 02:02:18,279 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:02:18,303 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:02:18,304 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:02:18,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:02:18 BoogieIcfgContainer [2025-02-06 02:02:18,305 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:02:18,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:02:18,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:02:18,310 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:02:18,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:02:17" (1/3) ... [2025-02-06 02:02:18,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1236b5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:02:18, skipping insertion in model container [2025-02-06 02:02:18,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:02:17" (2/3) ... [2025-02-06 02:02:18,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1236b5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:02:18, skipping insertion in model container [2025-02-06 02:02:18,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:02:18" (3/3) ... [2025-02-06 02:02:18,313 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-57.i [2025-02-06 02:02:18,323 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:02:18,327 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount100_file-57.i that has 2 procedures, 110 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:02:18,400 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:02:18,409 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;@2af51a2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:02:18,409 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:02:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-02-06 02:02:18,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-02-06 02:02:18,424 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:02:18,425 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:18,425 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:02:18,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:02:18,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1726821382, now seen corresponding path program 1 times [2025-02-06 02:02:18,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:02:18,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541849666] [2025-02-06 02:02:18,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:02:18,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:02:18,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 02:02:18,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 02:02:18,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:02:18,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:02:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2025-02-06 02:02:18,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:02:18,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541849666] [2025-02-06 02:02:18,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541849666] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:02:18,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745066289] [2025-02-06 02:02:18,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:02:18,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:02:18,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:02:18,725 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 02:02:18,727 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 02:02:18,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 02:02:18,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 02:02:18,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:02:18,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:02:18,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:02:18,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:02:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2025-02-06 02:02:18,926 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:02:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745066289] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:02:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:02:18,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:02:18,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886275590] [2025-02-06 02:02:18,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:02:18,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:02:18,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:02:18,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:02:18,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:02:18,950 INFO L87 Difference]: Start difference. First operand has 110 states, 71 states have (on average 1.4507042253521127) internal successors, (103), 72 states have internal predecessors, (103), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2025-02-06 02:02:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:02:18,980 INFO L93 Difference]: Finished difference Result 214 states and 381 transitions. [2025-02-06 02:02:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:02:18,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) Word has length 227 [2025-02-06 02:02:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:02:18,987 INFO L225 Difference]: With dead ends: 214 [2025-02-06 02:02:18,987 INFO L226 Difference]: Without dead ends: 107 [2025-02-06 02:02:18,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:02:18,991 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:02:18,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:02:19,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-02-06 02:02:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2025-02-06 02:02:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 69 states have internal predecessors, (98), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-02-06 02:02:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 170 transitions. [2025-02-06 02:02:19,027 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 170 transitions. Word has length 227 [2025-02-06 02:02:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:02:19,028 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 170 transitions. [2025-02-06 02:02:19,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2025-02-06 02:02:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 170 transitions. [2025-02-06 02:02:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-02-06 02:02:19,034 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:02:19,034 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:19,047 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 02:02:19,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 02:02:19,238 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:02:19,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:02:19,239 INFO L85 PathProgramCache]: Analyzing trace with hash 897085750, now seen corresponding path program 1 times [2025-02-06 02:02:19,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:02:19,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664404320] [2025-02-06 02:02:19,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:02:19,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:02:19,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 02:02:19,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 02:02:19,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:02:19,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:03:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2025-02-06 02:03:26,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:03:26,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664404320] [2025-02-06 02:03:26,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664404320] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:03:26,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:03:26,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2025-02-06 02:03:26,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307279586] [2025-02-06 02:03:26,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:03:26,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 02:03:26,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:03:26,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 02:03:26,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2025-02-06 02:03:26,594 INFO L87 Difference]: Start difference. First operand 107 states and 170 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 4 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2025-02-06 02:03:31,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:03:31,782 INFO L93 Difference]: Finished difference Result 529 states and 827 transitions. [2025-02-06 02:03:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 02:03:31,783 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 4 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 227 [2025-02-06 02:03:31,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:03:31,793 INFO L225 Difference]: With dead ends: 529 [2025-02-06 02:03:31,794 INFO L226 Difference]: Without dead ends: 425 [2025-02-06 02:03:31,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=233, Invalid=759, Unknown=0, NotChecked=0, Total=992 [2025-02-06 02:03:31,795 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 1030 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-06 02:03:31,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1218 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-06 02:03:31,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2025-02-06 02:03:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 192. [2025-02-06 02:03:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 117 states have (on average 1.376068376068376) internal successors, (161), 117 states have internal predecessors, (161), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2025-02-06 02:03:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 305 transitions. [2025-02-06 02:03:31,834 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 305 transitions. Word has length 227 [2025-02-06 02:03:31,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:03:31,835 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 305 transitions. [2025-02-06 02:03:31,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 4 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2025-02-06 02:03:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 305 transitions. [2025-02-06 02:03:31,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-02-06 02:03:31,840 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:03:31,841 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:31,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:03:31,841 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:03:31,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:03:31,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1026168469, now seen corresponding path program 1 times [2025-02-06 02:03:31,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:03:31,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053164827] [2025-02-06 02:03:31,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:03:31,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:03:31,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 02:03:31,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 02:03:31,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:03:31,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:03:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2025-02-06 02:03:49,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:03:49,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053164827] [2025-02-06 02:03:49,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053164827] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:03:49,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:03:49,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-02-06 02:03:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233869906] [2025-02-06 02:03:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:03:49,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 02:03:49,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:03:49,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 02:03:49,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-06 02:03:49,337 INFO L87 Difference]: Start difference. First operand 192 states and 305 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2025-02-06 02:03:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:03:51,959 INFO L93 Difference]: Finished difference Result 500 states and 788 transitions. [2025-02-06 02:03:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 02:03:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 227 [2025-02-06 02:03:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:03:51,963 INFO L225 Difference]: With dead ends: 500 [2025-02-06 02:03:51,963 INFO L226 Difference]: Without dead ends: 396 [2025-02-06 02:03:51,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2025-02-06 02:03:51,967 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 821 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:03:51,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1001 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-06 02:03:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2025-02-06 02:03:51,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 195. [2025-02-06 02:03:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 120 states have (on average 1.3833333333333333) internal successors, (166), 120 states have internal predecessors, (166), 72 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2025-02-06 02:03:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 310 transitions. [2025-02-06 02:03:51,993 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 310 transitions. Word has length 227 [2025-02-06 02:03:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:03:51,994 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 310 transitions. [2025-02-06 02:03:51,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2025-02-06 02:03:51,994 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 310 transitions. [2025-02-06 02:03:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-02-06 02:03:51,996 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:03:51,996 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:51,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:03:51,996 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:03:51,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:03:51,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1120013619, now seen corresponding path program 1 times [2025-02-06 02:03:51,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:03:51,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965530066] [2025-02-06 02:03:51,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:03:51,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:03:52,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 227 statements into 1 equivalence classes. [2025-02-06 02:03:52,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 227 of 227 statements. [2025-02-06 02:03:52,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:03:52,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat