./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81fdc30d5ae06f4aa0f8c63596e14b99f6ff7b82b4febb712a46f5be02949bcd --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 04:33:00,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 04:33:00,939 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 04:33:00,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 04:33:00,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 04:33:00,962 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 04:33:00,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 04:33:00,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 04:33:00,963 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 04:33:00,963 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 04:33:00,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 04:33:00,963 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 04:33:00,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 04:33:00,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 04:33:00,963 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 04:33:00,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 04:33:00,964 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 04:33:00,965 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 04:33:00,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 04:33:00,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 04:33:00,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 04:33:00,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:33:00,965 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 04:33:00,965 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 04:33:00,965 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 04:33:00,965 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 04:33:00,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 04:33:00,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 04:33:00,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 04:33:00,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 04:33:00,966 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 04:33:00,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 04:33:00,966 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/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81fdc30d5ae06f4aa0f8c63596e14b99f6ff7b82b4febb712a46f5be02949bcd [2025-03-17 04:33:01,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 04:33:01,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 04:33:01,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 04:33:01,225 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 04:33:01,225 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 04:33:01,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i [2025-03-17 04:33:02,641 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f9fbf13/3f9605909fb3481eac33d7b44bcff4f7/FLAGee92e867e [2025-03-17 04:33:02,980 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 04:33:02,981 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i [2025-03-17 04:33:02,993 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f9fbf13/3f9605909fb3481eac33d7b44bcff4f7/FLAGee92e867e [2025-03-17 04:33:03,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f9fbf13/3f9605909fb3481eac33d7b44bcff4f7 [2025-03-17 04:33:03,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 04:33:03,229 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 04:33:03,230 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 04:33:03,230 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 04:33:03,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 04:33:03,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,237 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5540f65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03, skipping insertion in model container [2025-03-17 04:33:03,237 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,267 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 04:33:03,377 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i[916,929] [2025-03-17 04:33:03,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:33:03,494 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 04:33:03,503 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-74.i[916,929] [2025-03-17 04:33:03,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:33:03,562 INFO L204 MainTranslator]: Completed translation [2025-03-17 04:33:03,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03 WrapperNode [2025-03-17 04:33:03,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 04:33:03,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 04:33:03,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 04:33:03,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 04:33:03,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,649 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 447 [2025-03-17 04:33:03,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 04:33:03,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 04:33:03,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 04:33:03,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 04:33:03,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,671 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,711 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]. [2025-03-17 04:33:03,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,733 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 04:33:03,766 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 04:33:03,767 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 04:33:03,767 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 04:33:03,769 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (1/1) ... [2025-03-17 04:33:03,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:33:03,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:33:03,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 04:33:03,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 04:33:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 04:33:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 04:33:03,819 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 04:33:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 04:33:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 04:33:03,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 04:33:03,917 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 04:33:03,918 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 04:33:04,647 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L353: havoc property_#t~bitwise36#1;havoc property_#t~short37#1;havoc property_#t~bitwise38#1;havoc property_#t~short39#1;havoc property_#t~ite43#1;havoc property_#t~ite42#1;havoc property_#t~ite41#1;havoc property_#t~bitwise40#1;havoc property_#t~short44#1;havoc property_#t~ite46#1;havoc property_#t~bitwise45#1;havoc property_#t~short47#1; [2025-03-17 04:33:04,707 INFO L? ?]: Removed 55 outVars from TransFormulas that were not future-live. [2025-03-17 04:33:04,708 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 04:33:04,722 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 04:33:04,723 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-17 04:33:04,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:33:04 BoogieIcfgContainer [2025-03-17 04:33:04,723 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 04:33:04,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 04:33:04,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 04:33:04,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 04:33:04,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:33:03" (1/3) ... [2025-03-17 04:33:04,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e4c66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:33:04, skipping insertion in model container [2025-03-17 04:33:04,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:33:03" (2/3) ... [2025-03-17 04:33:04,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e4c66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:33:04, skipping insertion in model container [2025-03-17 04:33:04,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:33:04" (3/3) ... [2025-03-17 04:33:04,729 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-74.i [2025-03-17 04:33:04,739 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 04:33:04,741 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-74.i that has 2 procedures, 187 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 04:33:04,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 04:33:04,807 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;@1273248a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 04:33:04,807 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 04:33:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 139 states have (on average 1.5035971223021583) internal successors, (209), 140 states have internal predecessors, (209), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-17 04:33:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-17 04:33:04,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:04,826 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:04,827 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:04,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash -171922560, now seen corresponding path program 1 times [2025-03-17 04:33:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:04,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608405339] [2025-03-17 04:33:04,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:04,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:04,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-17 04:33:04,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-17 04:33:04,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:04,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2025-03-17 04:33:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:05,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608405339] [2025-03-17 04:33:05,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608405339] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:33:05,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805719184] [2025-03-17 04:33:05,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:05,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:33:05,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:33:05,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:33:05,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 04:33:05,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-17 04:33:05,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-17 04:33:05,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:05,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:05,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 04:33:05,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:33:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 3872 trivial. 0 not checked. [2025-03-17 04:33:05,526 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 04:33:05,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805719184] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:05,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:33:05,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 04:33:05,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879695233] [2025-03-17 04:33:05,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:05,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 04:33:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:05,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 04:33:05,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:33:05,548 INFO L87 Difference]: Start difference. First operand has 187 states, 139 states have (on average 1.5035971223021583) internal successors, (209), 140 states have internal predecessors, (209), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-17 04:33:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:05,599 INFO L93 Difference]: Finished difference Result 371 states and 641 transitions. [2025-03-17 04:33:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 04:33:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) Word has length 307 [2025-03-17 04:33:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:05,611 INFO L225 Difference]: With dead ends: 371 [2025-03-17 04:33:05,611 INFO L226 Difference]: Without dead ends: 185 [2025-03-17 04:33:05,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:33:05,617 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:05,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 287 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:33:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-03-17 04:33:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2025-03-17 04:33:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 138 states have (on average 1.4855072463768115) internal successors, (205), 138 states have internal predecessors, (205), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-17 04:33:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 295 transitions. [2025-03-17 04:33:05,688 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 295 transitions. Word has length 307 [2025-03-17 04:33:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:05,688 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 295 transitions. [2025-03-17 04:33:05,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-17 04:33:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 295 transitions. [2025-03-17 04:33:05,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-17 04:33:05,697 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:05,697 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:05,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 04:33:05,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 04:33:05,899 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:05,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:05,901 INFO L85 PathProgramCache]: Analyzing trace with hash 662093053, now seen corresponding path program 1 times [2025-03-17 04:33:05,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:05,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410311718] [2025-03-17 04:33:05,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:05,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:05,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-17 04:33:06,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-17 04:33:06,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:06,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:06,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:06,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410311718] [2025-03-17 04:33:06,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410311718] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:06,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:06,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:33:06,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999870895] [2025-03-17 04:33:06,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:06,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:33:06,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:06,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:33:06,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:33:06,289 INFO L87 Difference]: Start difference. First operand 185 states and 295 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:06,445 INFO L93 Difference]: Finished difference Result 549 states and 875 transitions. [2025-03-17 04:33:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:33:06,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 307 [2025-03-17 04:33:06,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:06,452 INFO L225 Difference]: With dead ends: 549 [2025-03-17 04:33:06,453 INFO L226 Difference]: Without dead ends: 365 [2025-03-17 04:33:06,454 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 [2025-03-17 04:33:06,456 INFO L435 NwaCegarLoop]: 484 mSDtfsCounter, 280 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:06,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 757 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:33:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2025-03-17 04:33:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 363. [2025-03-17 04:33:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 270 states have (on average 1.4666666666666666) internal successors, (396), 270 states have internal predecessors, (396), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-17 04:33:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 576 transitions. [2025-03-17 04:33:06,512 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 576 transitions. Word has length 307 [2025-03-17 04:33:06,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:06,514 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 576 transitions. [2025-03-17 04:33:06,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:06,515 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 576 transitions. [2025-03-17 04:33:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-17 04:33:06,518 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:06,518 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:06,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 04:33:06,518 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:06,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:06,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1375963236, now seen corresponding path program 1 times [2025-03-17 04:33:06,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:06,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229941824] [2025-03-17 04:33:06,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:06,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:06,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-17 04:33:06,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-17 04:33:06,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:06,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:07,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:07,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229941824] [2025-03-17 04:33:07,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229941824] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:07,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:07,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:33:07,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709947452] [2025-03-17 04:33:07,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:07,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:33:07,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:07,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:33:07,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:33:07,216 INFO L87 Difference]: Start difference. First operand 363 states and 576 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:07,597 INFO L93 Difference]: Finished difference Result 1277 states and 2004 transitions. [2025-03-17 04:33:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:33:07,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 307 [2025-03-17 04:33:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:07,607 INFO L225 Difference]: With dead ends: 1277 [2025-03-17 04:33:07,609 INFO L226 Difference]: Without dead ends: 915 [2025-03-17 04:33:07,611 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 [2025-03-17 04:33:07,612 INFO L435 NwaCegarLoop]: 339 mSDtfsCounter, 443 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:07,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 944 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:33:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2025-03-17 04:33:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 624. [2025-03-17 04:33:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 439 states have (on average 1.4031890660592254) internal successors, (616), 439 states have internal predecessors, (616), 180 states have call successors, (180), 4 states have call predecessors, (180), 4 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2025-03-17 04:33:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 976 transitions. [2025-03-17 04:33:07,694 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 976 transitions. Word has length 307 [2025-03-17 04:33:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:07,694 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 976 transitions. [2025-03-17 04:33:07,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 976 transitions. [2025-03-17 04:33:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2025-03-17 04:33:07,697 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:07,698 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:07,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 04:33:07,698 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:07,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1346502129, now seen corresponding path program 1 times [2025-03-17 04:33:07,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:07,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591250100] [2025-03-17 04:33:07,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:07,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:07,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 308 statements into 1 equivalence classes. [2025-03-17 04:33:07,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 308 of 308 statements. [2025-03-17 04:33:07,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:07,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:08,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:08,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591250100] [2025-03-17 04:33:08,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591250100] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:08,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:08,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:33:08,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183758467] [2025-03-17 04:33:08,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:08,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:33:08,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:08,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:33:08,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:33:08,161 INFO L87 Difference]: Start difference. First operand 624 states and 976 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:08,546 INFO L93 Difference]: Finished difference Result 1575 states and 2453 transitions. [2025-03-17 04:33:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:33:08,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 308 [2025-03-17 04:33:08,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:08,558 INFO L225 Difference]: With dead ends: 1575 [2025-03-17 04:33:08,559 INFO L226 Difference]: Without dead ends: 952 [2025-03-17 04:33:08,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:33:08,563 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 263 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:08,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 832 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:33:08,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2025-03-17 04:33:08,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 818. [2025-03-17 04:33:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 587 states have (on average 1.4207836456558773) internal successors, (834), 587 states have internal predecessors, (834), 225 states have call successors, (225), 5 states have call predecessors, (225), 5 states have return successors, (225), 225 states have call predecessors, (225), 225 states have call successors, (225) [2025-03-17 04:33:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1284 transitions. [2025-03-17 04:33:08,692 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1284 transitions. Word has length 308 [2025-03-17 04:33:08,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:08,693 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 1284 transitions. [2025-03-17 04:33:08,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1284 transitions. [2025-03-17 04:33:08,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2025-03-17 04:33:08,697 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:08,697 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:08,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 04:33:08,698 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:08,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:08,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1856346077, now seen corresponding path program 1 times [2025-03-17 04:33:08,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:08,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769385734] [2025-03-17 04:33:08,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:08,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:08,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-03-17 04:33:08,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-03-17 04:33:08,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:08,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:09,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:09,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769385734] [2025-03-17 04:33:09,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769385734] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:09,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:09,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:33:09,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425616394] [2025-03-17 04:33:09,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:09,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:33:09,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:09,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:33:09,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:33:09,130 INFO L87 Difference]: Start difference. First operand 818 states and 1284 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:09,491 INFO L93 Difference]: Finished difference Result 1686 states and 2627 transitions. [2025-03-17 04:33:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:33:09,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 309 [2025-03-17 04:33:09,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:09,499 INFO L225 Difference]: With dead ends: 1686 [2025-03-17 04:33:09,500 INFO L226 Difference]: Without dead ends: 952 [2025-03-17 04:33:09,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:33:09,512 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 259 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:09,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 835 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:33:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2025-03-17 04:33:09,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 822. [2025-03-17 04:33:09,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 591 states have (on average 1.416243654822335) internal successors, (837), 591 states have internal predecessors, (837), 225 states have call successors, (225), 5 states have call predecessors, (225), 5 states have return successors, (225), 225 states have call predecessors, (225), 225 states have call successors, (225) [2025-03-17 04:33:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1287 transitions. [2025-03-17 04:33:09,589 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1287 transitions. Word has length 309 [2025-03-17 04:33:09,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:09,591 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 1287 transitions. [2025-03-17 04:33:09,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1287 transitions. [2025-03-17 04:33:09,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2025-03-17 04:33:09,595 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:09,596 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:09,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 04:33:09,596 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:09,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:09,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1124275767, now seen corresponding path program 1 times [2025-03-17 04:33:09,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:09,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547592292] [2025-03-17 04:33:09,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:09,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:09,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-03-17 04:33:09,662 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-03-17 04:33:09,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:09,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:10,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:10,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547592292] [2025-03-17 04:33:10,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547592292] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:10,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:10,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:33:10,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687227578] [2025-03-17 04:33:10,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:10,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:33:10,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:10,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:33:10,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:33:10,167 INFO L87 Difference]: Start difference. First operand 822 states and 1287 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:10,531 INFO L93 Difference]: Finished difference Result 1999 states and 3104 transitions. [2025-03-17 04:33:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:33:10,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 310 [2025-03-17 04:33:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:10,542 INFO L225 Difference]: With dead ends: 1999 [2025-03-17 04:33:10,542 INFO L226 Difference]: Without dead ends: 1329 [2025-03-17 04:33:10,545 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 [2025-03-17 04:33:10,546 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 282 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:10,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1011 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:33:10,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2025-03-17 04:33:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1129. [2025-03-17 04:33:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 842 states have (on average 1.4180522565320666) internal successors, (1194), 844 states have internal predecessors, (1194), 277 states have call successors, (277), 9 states have call predecessors, (277), 9 states have return successors, (277), 275 states have call predecessors, (277), 277 states have call successors, (277) [2025-03-17 04:33:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1748 transitions. [2025-03-17 04:33:10,627 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1748 transitions. Word has length 310 [2025-03-17 04:33:10,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:10,628 INFO L471 AbstractCegarLoop]: Abstraction has 1129 states and 1748 transitions. [2025-03-17 04:33:10,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:10,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1748 transitions. [2025-03-17 04:33:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2025-03-17 04:33:10,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:10,633 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:10,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 04:33:10,633 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:10,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:10,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1191282520, now seen corresponding path program 1 times [2025-03-17 04:33:10,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:10,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274244677] [2025-03-17 04:33:10,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:10,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:10,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-03-17 04:33:10,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-03-17 04:33:10,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:10,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:10,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:10,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274244677] [2025-03-17 04:33:10,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274244677] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:10,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:10,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:33:10,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345762733] [2025-03-17 04:33:10,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:10,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:33:10,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:10,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:33:10,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:33:10,913 INFO L87 Difference]: Start difference. First operand 1129 states and 1748 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:11,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:11,038 INFO L93 Difference]: Finished difference Result 2497 states and 3868 transitions. [2025-03-17 04:33:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:33:11,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 310 [2025-03-17 04:33:11,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:11,065 INFO L225 Difference]: With dead ends: 2497 [2025-03-17 04:33:11,065 INFO L226 Difference]: Without dead ends: 1586 [2025-03-17 04:33:11,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:33:11,069 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 184 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:11,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 634 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:33:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2025-03-17 04:33:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1584. [2025-03-17 04:33:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1177 states have (on average 1.4163126593033135) internal successors, (1667), 1180 states have internal predecessors, (1667), 393 states have call successors, (393), 13 states have call predecessors, (393), 13 states have return successors, (393), 390 states have call predecessors, (393), 393 states have call successors, (393) [2025-03-17 04:33:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2453 transitions. [2025-03-17 04:33:11,177 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2453 transitions. Word has length 310 [2025-03-17 04:33:11,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:11,178 INFO L471 AbstractCegarLoop]: Abstraction has 1584 states and 2453 transitions. [2025-03-17 04:33:11,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2453 transitions. [2025-03-17 04:33:11,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2025-03-17 04:33:11,181 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:11,181 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:11,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 04:33:11,181 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:11,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1249316754, now seen corresponding path program 1 times [2025-03-17 04:33:11,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:11,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501150337] [2025-03-17 04:33:11,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:11,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:11,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-03-17 04:33:11,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-03-17 04:33:11,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:11,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:11,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:11,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501150337] [2025-03-17 04:33:11,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501150337] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:11,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:11,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:33:11,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470956375] [2025-03-17 04:33:11,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:11,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:33:11,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:11,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:33:11,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:33:11,974 INFO L87 Difference]: Start difference. First operand 1584 states and 2453 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:12,875 INFO L93 Difference]: Finished difference Result 5743 states and 8889 transitions. [2025-03-17 04:33:12,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:33:12,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 310 [2025-03-17 04:33:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:12,912 INFO L225 Difference]: With dead ends: 5743 [2025-03-17 04:33:12,912 INFO L226 Difference]: Without dead ends: 4252 [2025-03-17 04:33:12,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:33:12,922 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 513 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:12,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 960 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 04:33:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2025-03-17 04:33:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 4248. [2025-03-17 04:33:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4248 states, 3121 states have (on average 1.3867350208266582) internal successors, (4328), 3130 states have internal predecessors, (4328), 1089 states have call successors, (1089), 37 states have call predecessors, (1089), 37 states have return successors, (1089), 1080 states have call predecessors, (1089), 1089 states have call successors, (1089) [2025-03-17 04:33:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4248 states to 4248 states and 6506 transitions. [2025-03-17 04:33:13,293 INFO L78 Accepts]: Start accepts. Automaton has 4248 states and 6506 transitions. Word has length 310 [2025-03-17 04:33:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:13,295 INFO L471 AbstractCegarLoop]: Abstraction has 4248 states and 6506 transitions. [2025-03-17 04:33:13,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4248 states and 6506 transitions. [2025-03-17 04:33:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2025-03-17 04:33:13,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:13,303 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:13,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 04:33:13,304 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:13,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:13,305 INFO L85 PathProgramCache]: Analyzing trace with hash 212263245, now seen corresponding path program 1 times [2025-03-17 04:33:13,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:13,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437200117] [2025-03-17 04:33:13,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:13,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:13,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-03-17 04:33:13,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-03-17 04:33:13,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:13,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:13,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:13,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437200117] [2025-03-17 04:33:13,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437200117] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:13,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:13,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 04:33:13,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833432438] [2025-03-17 04:33:13,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:13,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 04:33:13,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:13,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 04:33:13,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 04:33:13,489 INFO L87 Difference]: Start difference. First operand 4248 states and 6506 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:13,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:13,859 INFO L93 Difference]: Finished difference Result 10158 states and 15583 transitions. [2025-03-17 04:33:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 04:33:13,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 310 [2025-03-17 04:33:13,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:13,906 INFO L225 Difference]: With dead ends: 10158 [2025-03-17 04:33:13,906 INFO L226 Difference]: Without dead ends: 6190 [2025-03-17 04:33:13,923 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 [2025-03-17 04:33:13,926 INFO L435 NwaCegarLoop]: 543 mSDtfsCounter, 260 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:13,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 811 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 04:33:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6190 states. [2025-03-17 04:33:14,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6190 to 6188. [2025-03-17 04:33:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6188 states, 4623 states have (on average 1.3874107722258273) internal successors, (6414), 4638 states have internal predecessors, (6414), 1515 states have call successors, (1515), 49 states have call predecessors, (1515), 49 states have return successors, (1515), 1500 states have call predecessors, (1515), 1515 states have call successors, (1515) [2025-03-17 04:33:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 9444 transitions. [2025-03-17 04:33:14,246 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 9444 transitions. Word has length 310 [2025-03-17 04:33:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:14,247 INFO L471 AbstractCegarLoop]: Abstraction has 6188 states and 9444 transitions. [2025-03-17 04:33:14,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 9444 transitions. [2025-03-17 04:33:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2025-03-17 04:33:14,252 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:14,252 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:14,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 04:33:14,252 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:14,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:14,253 INFO L85 PathProgramCache]: Analyzing trace with hash -172044342, now seen corresponding path program 1 times [2025-03-17 04:33:14,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:14,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510718150] [2025-03-17 04:33:14,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:14,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:14,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 310 statements into 1 equivalence classes. [2025-03-17 04:33:14,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 310 of 310 statements. [2025-03-17 04:33:14,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:14,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:14,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:14,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510718150] [2025-03-17 04:33:14,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510718150] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:14,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:14,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:33:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312275359] [2025-03-17 04:33:14,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:14,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:33:14,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:14,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:33:14,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:33:14,871 INFO L87 Difference]: Start difference. First operand 6188 states and 9444 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:15,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:15,666 INFO L93 Difference]: Finished difference Result 13338 states and 20402 transitions. [2025-03-17 04:33:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 04:33:15,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 310 [2025-03-17 04:33:15,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:15,725 INFO L225 Difference]: With dead ends: 13338 [2025-03-17 04:33:15,726 INFO L226 Difference]: Without dead ends: 7908 [2025-03-17 04:33:15,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-17 04:33:15,747 INFO L435 NwaCegarLoop]: 535 mSDtfsCounter, 710 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:15,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1648 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 04:33:15,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7908 states. [2025-03-17 04:33:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7908 to 6137. [2025-03-17 04:33:16,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6137 states, 4572 states have (on average 1.3838582677165354) internal successors, (6327), 4587 states have internal predecessors, (6327), 1515 states have call successors, (1515), 49 states have call predecessors, (1515), 49 states have return successors, (1515), 1500 states have call predecessors, (1515), 1515 states have call successors, (1515) [2025-03-17 04:33:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 9357 transitions. [2025-03-17 04:33:16,196 INFO L78 Accepts]: Start accepts. Automaton has 6137 states and 9357 transitions. Word has length 310 [2025-03-17 04:33:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:16,197 INFO L471 AbstractCegarLoop]: Abstraction has 6137 states and 9357 transitions. [2025-03-17 04:33:16,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6137 states and 9357 transitions. [2025-03-17 04:33:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-03-17 04:33:16,205 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:16,205 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:16,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 04:33:16,206 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:16,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:16,207 INFO L85 PathProgramCache]: Analyzing trace with hash 175910631, now seen corresponding path program 1 times [2025-03-17 04:33:16,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:16,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914792734] [2025-03-17 04:33:16,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:16,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:16,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:33:16,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:33:16,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:16,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 54 proven. 78 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:33:17,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:17,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914792734] [2025-03-17 04:33:17,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914792734] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:33:17,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977907943] [2025-03-17 04:33:17,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:17,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:33:17,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:33:17,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:33:17,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 04:33:17,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-17 04:33:17,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-17 04:33:17,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:17,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:17,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 04:33:17,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:33:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1968 proven. 54 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2025-03-17 04:33:18,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:33:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 78 proven. 54 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:33:19,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977907943] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:33:19,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:33:19,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 20 [2025-03-17 04:33:19,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839353045] [2025-03-17 04:33:19,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:33:19,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 04:33:19,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:19,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 04:33:19,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2025-03-17 04:33:19,083 INFO L87 Difference]: Start difference. First operand 6137 states and 9357 transitions. Second operand has 20 states, 20 states have (on average 10.0) internal successors, (200), 20 states have internal predecessors, (200), 6 states have call successors, (135), 3 states have call predecessors, (135), 6 states have return successors, (135), 6 states have call predecessors, (135), 6 states have call successors, (135) [2025-03-17 04:33:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:22,321 INFO L93 Difference]: Finished difference Result 15160 states and 22731 transitions. [2025-03-17 04:33:22,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-03-17 04:33:22,322 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 20 states have internal predecessors, (200), 6 states have call successors, (135), 3 states have call predecessors, (135), 6 states have return successors, (135), 6 states have call predecessors, (135), 6 states have call successors, (135) Word has length 311 [2025-03-17 04:33:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:22,356 INFO L225 Difference]: With dead ends: 15160 [2025-03-17 04:33:22,356 INFO L226 Difference]: Without dead ends: 9149 [2025-03-17 04:33:22,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 613 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=789, Invalid=2751, Unknown=0, NotChecked=0, Total=3540 [2025-03-17 04:33:22,378 INFO L435 NwaCegarLoop]: 333 mSDtfsCounter, 3659 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 1251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3660 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1251 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:22,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3660 Valid, 3097 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1251 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-17 04:33:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2025-03-17 04:33:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 3478. [2025-03-17 04:33:22,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 2681 states have (on average 1.3845580007459903) internal successors, (3712), 2699 states have internal predecessors, (3712), 756 states have call successors, (756), 40 states have call predecessors, (756), 40 states have return successors, (756), 738 states have call predecessors, (756), 756 states have call successors, (756) [2025-03-17 04:33:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5224 transitions. [2025-03-17 04:33:22,711 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5224 transitions. Word has length 311 [2025-03-17 04:33:22,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:22,712 INFO L471 AbstractCegarLoop]: Abstraction has 3478 states and 5224 transitions. [2025-03-17 04:33:22,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 20 states have internal predecessors, (200), 6 states have call successors, (135), 3 states have call predecessors, (135), 6 states have return successors, (135), 6 states have call predecessors, (135), 6 states have call successors, (135) [2025-03-17 04:33:22,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5224 transitions. [2025-03-17 04:33:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2025-03-17 04:33:22,717 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:22,717 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:22,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 04:33:22,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-17 04:33:22,922 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:22,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash -29216242, now seen corresponding path program 1 times [2025-03-17 04:33:22,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:22,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25766445] [2025-03-17 04:33:22,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:22,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:22,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-03-17 04:33:23,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-03-17 04:33:23,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:23,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:23,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:23,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:23,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25766445] [2025-03-17 04:33:23,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25766445] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:23,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:23,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:33:23,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480605718] [2025-03-17 04:33:23,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:23,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:33:23,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:23,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:33:23,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:33:23,364 INFO L87 Difference]: Start difference. First operand 3478 states and 5224 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:23,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:23,961 INFO L93 Difference]: Finished difference Result 5966 states and 8945 transitions. [2025-03-17 04:33:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:33:23,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2025-03-17 04:33:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:23,978 INFO L225 Difference]: With dead ends: 5966 [2025-03-17 04:33:23,978 INFO L226 Difference]: Without dead ends: 3937 [2025-03-17 04:33:23,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:33:23,986 INFO L435 NwaCegarLoop]: 523 mSDtfsCounter, 299 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:23,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1503 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 04:33:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2025-03-17 04:33:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3490. [2025-03-17 04:33:24,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 2693 states have (on average 1.3817304121797251) internal successors, (3721), 2711 states have internal predecessors, (3721), 756 states have call successors, (756), 40 states have call predecessors, (756), 40 states have return successors, (756), 738 states have call predecessors, (756), 756 states have call successors, (756) [2025-03-17 04:33:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5233 transitions. [2025-03-17 04:33:24,151 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5233 transitions. Word has length 313 [2025-03-17 04:33:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:24,151 INFO L471 AbstractCegarLoop]: Abstraction has 3490 states and 5233 transitions. [2025-03-17 04:33:24,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5233 transitions. [2025-03-17 04:33:24,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2025-03-17 04:33:24,156 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:24,156 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:24,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 04:33:24,157 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:24,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:24,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1388614327, now seen corresponding path program 1 times [2025-03-17 04:33:24,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:24,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072908152] [2025-03-17 04:33:24,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:24,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:24,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-03-17 04:33:24,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-03-17 04:33:24,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:24,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:24,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:24,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072908152] [2025-03-17 04:33:24,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072908152] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:24,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:24,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 04:33:24,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091032885] [2025-03-17 04:33:24,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:24,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 04:33:24,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:24,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 04:33:24,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-17 04:33:24,921 INFO L87 Difference]: Start difference. First operand 3490 states and 5233 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:25,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:25,837 INFO L93 Difference]: Finished difference Result 10832 states and 16122 transitions. [2025-03-17 04:33:25,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 04:33:25,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2025-03-17 04:33:25,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:25,868 INFO L225 Difference]: With dead ends: 10832 [2025-03-17 04:33:25,869 INFO L226 Difference]: Without dead ends: 8255 [2025-03-17 04:33:25,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-17 04:33:25,879 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 580 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:25,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1144 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 04:33:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2025-03-17 04:33:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 5150. [2025-03-17 04:33:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5150 states, 3949 states have (on average 1.3757913395796404) internal successors, (5433), 3977 states have internal predecessors, (5433), 1142 states have call successors, (1142), 58 states have call predecessors, (1142), 58 states have return successors, (1142), 1114 states have call predecessors, (1142), 1142 states have call successors, (1142) [2025-03-17 04:33:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5150 states to 5150 states and 7717 transitions. [2025-03-17 04:33:26,153 INFO L78 Accepts]: Start accepts. Automaton has 5150 states and 7717 transitions. Word has length 313 [2025-03-17 04:33:26,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:26,154 INFO L471 AbstractCegarLoop]: Abstraction has 5150 states and 7717 transitions. [2025-03-17 04:33:26,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:26,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5150 states and 7717 transitions. [2025-03-17 04:33:26,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2025-03-17 04:33:26,159 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:26,159 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:26,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 04:33:26,159 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:26,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:26,160 INFO L85 PathProgramCache]: Analyzing trace with hash -427000310, now seen corresponding path program 1 times [2025-03-17 04:33:26,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:26,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53704742] [2025-03-17 04:33:26,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:26,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-03-17 04:33:27,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-03-17 04:33:27,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:27,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 78 proven. 54 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:33:27,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53704742] [2025-03-17 04:33:27,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53704742] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:33:27,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850921179] [2025-03-17 04:33:27,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:27,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:33:27,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:33:27,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:33:27,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 04:33:27,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-03-17 04:33:27,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-03-17 04:33:27,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:27,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:27,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 04:33:27,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:33:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1988 proven. 102 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2025-03-17 04:33:27,988 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:33:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 78 proven. 54 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-17 04:33:28,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850921179] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:33:28,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:33:28,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 16 [2025-03-17 04:33:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407098768] [2025-03-17 04:33:28,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:33:28,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 04:33:28,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:28,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 04:33:28,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2025-03-17 04:33:28,307 INFO L87 Difference]: Start difference. First operand 5150 states and 7717 transitions. Second operand has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2025-03-17 04:33:30,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:30,867 INFO L93 Difference]: Finished difference Result 13573 states and 20133 transitions. [2025-03-17 04:33:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-17 04:33:30,867 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 313 [2025-03-17 04:33:30,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:30,919 INFO L225 Difference]: With dead ends: 13573 [2025-03-17 04:33:30,919 INFO L226 Difference]: Without dead ends: 10227 [2025-03-17 04:33:30,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 620 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=456, Invalid=1436, Unknown=0, NotChecked=0, Total=1892 [2025-03-17 04:33:30,937 INFO L435 NwaCegarLoop]: 372 mSDtfsCounter, 1012 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:30,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 3186 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-17 04:33:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10227 states. [2025-03-17 04:33:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10227 to 5703. [2025-03-17 04:33:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5703 states, 4288 states have (on average 1.3561100746268657) internal successors, (5815), 4322 states have internal predecessors, (5815), 1328 states have call successors, (1328), 86 states have call predecessors, (1328), 86 states have return successors, (1328), 1294 states have call predecessors, (1328), 1328 states have call successors, (1328) [2025-03-17 04:33:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5703 states to 5703 states and 8471 transitions. [2025-03-17 04:33:31,468 INFO L78 Accepts]: Start accepts. Automaton has 5703 states and 8471 transitions. Word has length 313 [2025-03-17 04:33:31,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:31,469 INFO L471 AbstractCegarLoop]: Abstraction has 5703 states and 8471 transitions. [2025-03-17 04:33:31,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 3 states have call successors, (63), 3 states have call predecessors, (63), 5 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2025-03-17 04:33:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5703 states and 8471 transitions. [2025-03-17 04:33:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2025-03-17 04:33:31,474 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:31,475 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:31,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 04:33:31,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:33:31,676 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:31,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:31,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1724118221, now seen corresponding path program 1 times [2025-03-17 04:33:31,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:31,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116955873] [2025-03-17 04:33:31,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:31,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:31,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-03-17 04:33:31,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-03-17 04:33:31,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:31,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:33:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-17 04:33:31,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:33:31,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116955873] [2025-03-17 04:33:31,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116955873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:33:31,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:33:31,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:33:31,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893152765] [2025-03-17 04:33:31,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:33:31,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:33:31,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:33:31,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:33:31,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:33:31,981 INFO L87 Difference]: Start difference. First operand 5703 states and 8471 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:32,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:33:32,623 INFO L93 Difference]: Finished difference Result 11607 states and 17243 transitions. [2025-03-17 04:33:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:33:32,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2025-03-17 04:33:32,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:33:32,658 INFO L225 Difference]: With dead ends: 11607 [2025-03-17 04:33:32,658 INFO L226 Difference]: Without dead ends: 8145 [2025-03-17 04:33:32,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:33:32,673 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 442 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:33:32,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 951 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:33:32,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8145 states. [2025-03-17 04:33:33,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8145 to 7372. [2025-03-17 04:33:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7372 states, 5503 states have (on average 1.3498091949845539) internal successors, (7428), 5547 states have internal predecessors, (7428), 1752 states have call successors, (1752), 116 states have call predecessors, (1752), 116 states have return successors, (1752), 1708 states have call predecessors, (1752), 1752 states have call successors, (1752) [2025-03-17 04:33:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7372 states to 7372 states and 10932 transitions. [2025-03-17 04:33:33,139 INFO L78 Accepts]: Start accepts. Automaton has 7372 states and 10932 transitions. Word has length 313 [2025-03-17 04:33:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:33:33,140 INFO L471 AbstractCegarLoop]: Abstraction has 7372 states and 10932 transitions. [2025-03-17 04:33:33,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-17 04:33:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7372 states and 10932 transitions. [2025-03-17 04:33:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2025-03-17 04:33:33,145 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:33:33,145 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:33:33,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 04:33:33,146 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:33:33,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:33:33,146 INFO L85 PathProgramCache]: Analyzing trace with hash -762772253, now seen corresponding path program 1 times [2025-03-17 04:33:33,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:33:33,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248205078] [2025-03-17 04:33:33,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:33,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:33:33,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-17 04:33:35,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-17 04:33:35,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:33:35,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 04:33:35,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485295334] [2025-03-17 04:33:35,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:33:35,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:33:35,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:33:35,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:33:35,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 04:33:36,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes.