./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/eca-rers2012/Problem01_label22.c -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 4d8ab50842d069074a372df0f6486f85fb04e0716bd5a388e751a6626a969998 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 09:47:59,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:47:59,979 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 09:47:59,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:47:59,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:47:59,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:47:59,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:47:59,996 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:47:59,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:47:59,996 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:47:59,997 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:47:59,998 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:47:59,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:47:59,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:47:59,999 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:47:59,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:47:59,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:47:59,999 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 -> 4d8ab50842d069074a372df0f6486f85fb04e0716bd5a388e751a6626a969998 [2025-03-03 09:48:00,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:48:00,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:48:00,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:48:00,214 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:48:00,214 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:48:00,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label22.c [2025-03-03 09:48:01,357 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61986593/98315b16d23648f188cd7b26df8da149/FLAGab41f1366 [2025-03-03 09:48:01,655 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:48:01,656 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label22.c [2025-03-03 09:48:01,665 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61986593/98315b16d23648f188cd7b26df8da149/FLAGab41f1366 [2025-03-03 09:48:01,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c61986593/98315b16d23648f188cd7b26df8da149 [2025-03-03 09:48:01,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:48:01,691 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:48:01,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:48:01,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:48:01,697 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:48:01,697 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:48:01" (1/1) ... [2025-03-03 09:48:01,698 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579f74ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:01, skipping insertion in model container [2025-03-03 09:48:01,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:48:01" (1/1) ... [2025-03-03 09:48:01,729 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:48:01,938 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/eca-rers2012/Problem01_label22.c[21338,21351] [2025-03-03 09:48:01,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:48:01,964 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:48:02,018 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/eca-rers2012/Problem01_label22.c[21338,21351] [2025-03-03 09:48:02,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:48:02,035 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:48:02,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02 WrapperNode [2025-03-03 09:48:02,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:48:02,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:48:02,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:48:02,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:48:02,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,060 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,104 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 655 [2025-03-03 09:48:02,107 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:48:02,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:48:02,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:48:02,108 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:48:02,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,120 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,143 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]. [2025-03-03 09:48:02,144 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,144 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,163 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,177 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:48:02,182 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:48:02,182 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:48:02,182 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:48:02,183 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (1/1) ... [2025-03-03 09:48:02,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:48:02,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:48:02,211 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) [2025-03-03 09:48:02,217 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 [2025-03-03 09:48:02,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:48:02,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 09:48:02,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:48:02,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:48:02,287 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:48:02,288 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:48:03,064 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2025-03-03 09:48:03,064 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:48:03,078 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:48:03,079 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:48:03,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:48:03 BoogieIcfgContainer [2025-03-03 09:48:03,079 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:48:03,081 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:48:03,081 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:48:03,084 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:48:03,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:48:01" (1/3) ... [2025-03-03 09:48:03,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edf8554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:48:03, skipping insertion in model container [2025-03-03 09:48:03,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:02" (2/3) ... [2025-03-03 09:48:03,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edf8554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:48:03, skipping insertion in model container [2025-03-03 09:48:03,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:48:03" (3/3) ... [2025-03-03 09:48:03,087 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2025-03-03 09:48:03,099 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:48:03,100 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem01_label22.c that has 1 procedures, 198 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 09:48:03,140 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:48:03,147 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;@1e20ea64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:48:03,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:48:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.663265306122449) internal successors, (326), 197 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-03 09:48:03,157 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:03,158 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:03,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:03,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash -714133781, now seen corresponding path program 1 times [2025-03-03 09:48:03,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:03,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555521089] [2025-03-03 09:48:03,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:03,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:03,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 09:48:03,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 09:48:03,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:03,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:48:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:03,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555521089] [2025-03-03 09:48:03,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555521089] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:03,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:03,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:48:03,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223383251] [2025-03-03 09:48:03,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:03,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:03,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:03,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:03,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:03,634 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.663265306122449) internal successors, (326), 197 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:04,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:04,121 INFO L93 Difference]: Finished difference Result 528 states and 912 transitions. [2025-03-03 09:48:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:04,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2025-03-03 09:48:04,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:04,129 INFO L225 Difference]: With dead ends: 528 [2025-03-03 09:48:04,129 INFO L226 Difference]: Without dead ends: 266 [2025-03-03 09:48:04,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:04,136 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 55 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:04,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 73 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 09:48:04,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-03-03 09:48:04,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2025-03-03 09:48:04,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.411320754716981) internal successors, (374), 265 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 374 transitions. [2025-03-03 09:48:04,168 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 374 transitions. Word has length 127 [2025-03-03 09:48:04,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:04,168 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 374 transitions. [2025-03-03 09:48:04,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:04,168 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 374 transitions. [2025-03-03 09:48:04,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-03 09:48:04,171 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:04,171 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:04,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 09:48:04,171 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:04,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:04,172 INFO L85 PathProgramCache]: Analyzing trace with hash 455838152, now seen corresponding path program 1 times [2025-03-03 09:48:04,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:04,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281296674] [2025-03-03 09:48:04,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:04,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:04,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 09:48:04,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 09:48:04,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:04,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:48:04,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:04,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281296674] [2025-03-03 09:48:04,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281296674] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:04,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:04,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:04,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739005906] [2025-03-03 09:48:04,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:04,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:04,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:04,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:04,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:04,391 INFO L87 Difference]: Start difference. First operand 266 states and 374 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:04,739 INFO L93 Difference]: Finished difference Result 792 states and 1117 transitions. [2025-03-03 09:48:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:04,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2025-03-03 09:48:04,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:04,743 INFO L225 Difference]: With dead ends: 792 [2025-03-03 09:48:04,743 INFO L226 Difference]: Without dead ends: 528 [2025-03-03 09:48:04,744 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 [2025-03-03 09:48:04,746 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:04,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 19 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:04,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2025-03-03 09:48:04,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 397. [2025-03-03 09:48:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.4267676767676767) internal successors, (565), 396 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 565 transitions. [2025-03-03 09:48:04,763 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 565 transitions. Word has length 131 [2025-03-03 09:48:04,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:04,764 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 565 transitions. [2025-03-03 09:48:04,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:04,764 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 565 transitions. [2025-03-03 09:48:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-03 09:48:04,768 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:04,769 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:04,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 09:48:04,769 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:04,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:04,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1640234937, now seen corresponding path program 1 times [2025-03-03 09:48:04,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:04,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871543425] [2025-03-03 09:48:04,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:04,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:04,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-03 09:48:04,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-03 09:48:04,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:04,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:48:04,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:04,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871543425] [2025-03-03 09:48:04,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871543425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:04,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:04,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:48:04,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855562106] [2025-03-03 09:48:04,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:04,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:04,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:04,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:04,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:04,887 INFO L87 Difference]: Start difference. First operand 397 states and 565 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:05,225 INFO L93 Difference]: Finished difference Result 1054 states and 1492 transitions. [2025-03-03 09:48:05,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:05,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2025-03-03 09:48:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:05,229 INFO L225 Difference]: With dead ends: 1054 [2025-03-03 09:48:05,229 INFO L226 Difference]: Without dead ends: 659 [2025-03-03 09:48:05,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:05,231 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 172 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:05,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 29 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-03-03 09:48:05,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2025-03-03 09:48:05,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.3297872340425532) internal successors, (875), 658 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 875 transitions. [2025-03-03 09:48:05,250 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 875 transitions. Word has length 132 [2025-03-03 09:48:05,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:05,251 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 875 transitions. [2025-03-03 09:48:05,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 875 transitions. [2025-03-03 09:48:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-03 09:48:05,253 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:05,253 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:05,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 09:48:05,253 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:05,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash 216260828, now seen corresponding path program 1 times [2025-03-03 09:48:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068760247] [2025-03-03 09:48:05,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:05,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:05,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-03 09:48:05,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-03 09:48:05,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:05,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:05,416 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 09:48:05,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:05,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068760247] [2025-03-03 09:48:05,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068760247] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:05,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:05,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:48:05,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629858004] [2025-03-03 09:48:05,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:05,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:05,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:05,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:05,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:05,418 INFO L87 Difference]: Start difference. First operand 659 states and 875 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:05,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:05,752 INFO L93 Difference]: Finished difference Result 1316 states and 1748 transitions. [2025-03-03 09:48:05,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:05,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2025-03-03 09:48:05,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:05,755 INFO L225 Difference]: With dead ends: 1316 [2025-03-03 09:48:05,755 INFO L226 Difference]: Without dead ends: 659 [2025-03-03 09:48:05,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:05,756 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 132 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:05,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 62 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:05,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-03-03 09:48:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2025-03-03 09:48:05,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.3206686930091185) internal successors, (869), 658 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 869 transitions. [2025-03-03 09:48:05,769 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 869 transitions. Word has length 143 [2025-03-03 09:48:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:05,769 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 869 transitions. [2025-03-03 09:48:05,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 869 transitions. [2025-03-03 09:48:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-03 09:48:05,771 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:05,771 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:05,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 09:48:05,771 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:05,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1252990535, now seen corresponding path program 1 times [2025-03-03 09:48:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:05,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388890222] [2025-03-03 09:48:05,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:05,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-03 09:48:05,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-03 09:48:05,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:05,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 09:48:05,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388890222] [2025-03-03 09:48:05,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388890222] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:05,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:05,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:05,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789915673] [2025-03-03 09:48:05,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:05,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:48:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:05,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:48:05,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:48:05,939 INFO L87 Difference]: Start difference. First operand 659 states and 869 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:06,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:06,421 INFO L93 Difference]: Finished difference Result 1971 states and 2560 transitions. [2025-03-03 09:48:06,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:48:06,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2025-03-03 09:48:06,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:06,426 INFO L225 Difference]: With dead ends: 1971 [2025-03-03 09:48:06,426 INFO L226 Difference]: Without dead ends: 1314 [2025-03-03 09:48:06,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:48:06,427 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 263 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:06,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 48 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:48:06,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2025-03-03 09:48:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1183. [2025-03-03 09:48:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.239424703891709) internal successors, (1465), 1182 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1465 transitions. [2025-03-03 09:48:06,445 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1465 transitions. Word has length 147 [2025-03-03 09:48:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:06,445 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1465 transitions. [2025-03-03 09:48:06,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1465 transitions. [2025-03-03 09:48:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-03 09:48:06,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:06,448 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:06,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 09:48:06,448 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:06,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash 147500532, now seen corresponding path program 1 times [2025-03-03 09:48:06,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:06,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118478161] [2025-03-03 09:48:06,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:06,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:06,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-03 09:48:06,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-03 09:48:06,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:06,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 09:48:06,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:06,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118478161] [2025-03-03 09:48:06,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118478161] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:06,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:06,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:48:06,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025219] [2025-03-03 09:48:06,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:06,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:06,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:06,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:06,603 INFO L87 Difference]: Start difference. First operand 1183 states and 1465 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:06,892 INFO L93 Difference]: Finished difference Result 2364 states and 2928 transitions. [2025-03-03 09:48:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:06,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2025-03-03 09:48:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:06,895 INFO L225 Difference]: With dead ends: 2364 [2025-03-03 09:48:06,895 INFO L226 Difference]: Without dead ends: 1183 [2025-03-03 09:48:06,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:06,897 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 108 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:06,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 62 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2025-03-03 09:48:06,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1183. [2025-03-03 09:48:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.22419627749577) internal successors, (1447), 1182 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1447 transitions. [2025-03-03 09:48:06,915 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1447 transitions. Word has length 172 [2025-03-03 09:48:06,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:06,915 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1447 transitions. [2025-03-03 09:48:06,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:06,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1447 transitions. [2025-03-03 09:48:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-03 09:48:06,917 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:06,917 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:06,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 09:48:06,917 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:06,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:06,918 INFO L85 PathProgramCache]: Analyzing trace with hash 143513143, now seen corresponding path program 1 times [2025-03-03 09:48:06,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:06,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39806981] [2025-03-03 09:48:06,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:06,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:06,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-03 09:48:06,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-03 09:48:06,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:06,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 09:48:07,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:07,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39806981] [2025-03-03 09:48:07,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39806981] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:07,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:07,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:07,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26570344] [2025-03-03 09:48:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:07,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:48:07,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:07,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:48:07,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:48:07,092 INFO L87 Difference]: Start difference. First operand 1183 states and 1447 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:07,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:07,564 INFO L93 Difference]: Finished difference Result 2757 states and 3333 transitions. [2025-03-03 09:48:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:48:07,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2025-03-03 09:48:07,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:07,570 INFO L225 Difference]: With dead ends: 2757 [2025-03-03 09:48:07,571 INFO L226 Difference]: Without dead ends: 1576 [2025-03-03 09:48:07,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:48:07,573 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 245 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:07,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 60 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 09:48:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2025-03-03 09:48:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1445. [2025-03-03 09:48:07,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.2001385041551247) internal successors, (1733), 1444 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1733 transitions. [2025-03-03 09:48:07,597 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1733 transitions. Word has length 176 [2025-03-03 09:48:07,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:07,597 INFO L471 AbstractCegarLoop]: Abstraction has 1445 states and 1733 transitions. [2025-03-03 09:48:07,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1733 transitions. [2025-03-03 09:48:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2025-03-03 09:48:07,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:07,600 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:07,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 09:48:07,601 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:07,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash 725381631, now seen corresponding path program 1 times [2025-03-03 09:48:07,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:07,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874401014] [2025-03-03 09:48:07,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:07,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-03-03 09:48:07,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-03-03 09:48:07,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:07,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-03 09:48:07,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:07,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874401014] [2025-03-03 09:48:07,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874401014] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:07,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:07,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:07,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178520382] [2025-03-03 09:48:07,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:07,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:07,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:07,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:07,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:07,753 INFO L87 Difference]: Start difference. First operand 1445 states and 1733 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:08,066 INFO L93 Difference]: Finished difference Result 3281 states and 3923 transitions. [2025-03-03 09:48:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:08,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2025-03-03 09:48:08,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:08,072 INFO L225 Difference]: With dead ends: 3281 [2025-03-03 09:48:08,072 INFO L226 Difference]: Without dead ends: 1838 [2025-03-03 09:48:08,073 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 [2025-03-03 09:48:08,073 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 93 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:08,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 55 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:08,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2025-03-03 09:48:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1576. [2025-03-03 09:48:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.2063492063492063) internal successors, (1900), 1575 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1900 transitions. [2025-03-03 09:48:08,097 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1900 transitions. Word has length 193 [2025-03-03 09:48:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:08,098 INFO L471 AbstractCegarLoop]: Abstraction has 1576 states and 1900 transitions. [2025-03-03 09:48:08,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:08,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1900 transitions. [2025-03-03 09:48:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2025-03-03 09:48:08,102 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:08,103 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:08,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 09:48:08,103 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:08,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash -378928904, now seen corresponding path program 1 times [2025-03-03 09:48:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:08,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664088679] [2025-03-03 09:48:08,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:08,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:08,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 220 statements into 1 equivalence classes. [2025-03-03 09:48:08,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 220 of 220 statements. [2025-03-03 09:48:08,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:08,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 09:48:08,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:08,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664088679] [2025-03-03 09:48:08,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664088679] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:08,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:08,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:08,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143527961] [2025-03-03 09:48:08,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:08,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:08,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:08,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:08,218 INFO L87 Difference]: Start difference. First operand 1576 states and 1900 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:08,538 INFO L93 Difference]: Finished difference Result 3543 states and 4257 transitions. [2025-03-03 09:48:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:08,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2025-03-03 09:48:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:08,543 INFO L225 Difference]: With dead ends: 3543 [2025-03-03 09:48:08,543 INFO L226 Difference]: Without dead ends: 1969 [2025-03-03 09:48:08,545 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 [2025-03-03 09:48:08,545 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 88 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:08,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 191 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:08,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2025-03-03 09:48:08,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1838. [2025-03-03 09:48:08,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1837 states have (on average 1.1834512792596625) internal successors, (2174), 1837 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2174 transitions. [2025-03-03 09:48:08,571 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2174 transitions. Word has length 220 [2025-03-03 09:48:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:08,572 INFO L471 AbstractCegarLoop]: Abstraction has 1838 states and 2174 transitions. [2025-03-03 09:48:08,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2174 transitions. [2025-03-03 09:48:08,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2025-03-03 09:48:08,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:08,575 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:08,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 09:48:08,575 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:08,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:08,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1627595921, now seen corresponding path program 1 times [2025-03-03 09:48:08,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:08,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311793559] [2025-03-03 09:48:08,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:08,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:08,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 233 statements into 1 equivalence classes. [2025-03-03 09:48:08,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 233 of 233 statements. [2025-03-03 09:48:08,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:08,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 09:48:08,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:08,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311793559] [2025-03-03 09:48:08,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311793559] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:08,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:08,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:08,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534170986] [2025-03-03 09:48:08,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:08,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:08,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:08,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:08,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:08,656 INFO L87 Difference]: Start difference. First operand 1838 states and 2174 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:08,955 INFO L93 Difference]: Finished difference Result 3674 states and 4346 transitions. [2025-03-03 09:48:08,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:08,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2025-03-03 09:48:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:08,960 INFO L225 Difference]: With dead ends: 3674 [2025-03-03 09:48:08,961 INFO L226 Difference]: Without dead ends: 1838 [2025-03-03 09:48:08,962 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 [2025-03-03 09:48:08,963 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 98 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:08,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 178 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2025-03-03 09:48:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1838. [2025-03-03 09:48:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1837 states have (on average 1.1475231355470876) internal successors, (2108), 1837 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2108 transitions. [2025-03-03 09:48:09,010 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2108 transitions. Word has length 233 [2025-03-03 09:48:09,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:09,010 INFO L471 AbstractCegarLoop]: Abstraction has 1838 states and 2108 transitions. [2025-03-03 09:48:09,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2108 transitions. [2025-03-03 09:48:09,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2025-03-03 09:48:09,013 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:09,014 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:09,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 09:48:09,014 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:09,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1673309681, now seen corresponding path program 1 times [2025-03-03 09:48:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:09,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956009288] [2025-03-03 09:48:09,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:09,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:09,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 242 statements into 1 equivalence classes. [2025-03-03 09:48:09,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 242 of 242 statements. [2025-03-03 09:48:09,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:09,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2025-03-03 09:48:09,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:09,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956009288] [2025-03-03 09:48:09,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956009288] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:09,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:09,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:09,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084010259] [2025-03-03 09:48:09,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:09,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:09,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:09,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:09,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:09,117 INFO L87 Difference]: Start difference. First operand 1838 states and 2108 transitions. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:09,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:09,399 INFO L93 Difference]: Finished difference Result 2100 states and 2394 transitions. [2025-03-03 09:48:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:09,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2025-03-03 09:48:09,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:09,400 INFO L225 Difference]: With dead ends: 2100 [2025-03-03 09:48:09,400 INFO L226 Difference]: Without dead ends: 0 [2025-03-03 09:48:09,401 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 [2025-03-03 09:48:09,402 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:09,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:09,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-03 09:48:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-03 09:48:09,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-03 09:48:09,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2025-03-03 09:48:09,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:09,403 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-03 09:48:09,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:48:09,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-03 09:48:09,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-03 09:48:09,405 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 09:48:09,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 09:48:09,408 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:09,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-03 09:48:09,462 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 09:48:09,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 09:48:09 BoogieIcfgContainer [2025-03-03 09:48:09,473 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 09:48:09,473 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 09:48:09,473 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 09:48:09,474 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 09:48:09,474 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:48:03" (3/4) ... [2025-03-03 09:48:09,475 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-03 09:48:09,486 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-03-03 09:48:09,486 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-03 09:48:09,487 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-03 09:48:09,487 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-03 09:48:09,579 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-03 09:48:09,579 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-03 09:48:09,579 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 09:48:09,580 INFO L158 Benchmark]: Toolchain (without parser) took 7889.45ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 120.1MB in the beginning and 216.0MB in the end (delta: -96.0MB). Peak memory consumption was 144.5MB. Max. memory is 16.1GB. [2025-03-03 09:48:09,580 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 119.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 09:48:09,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.44ms. Allocated memory is still 167.8MB. Free memory was 120.1MB in the beginning and 91.1MB in the end (delta: 28.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-03 09:48:09,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.16ms. Allocated memory is still 167.8MB. Free memory was 91.1MB in the beginning and 86.1MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 09:48:09,581 INFO L158 Benchmark]: Boogie Preprocessor took 74.34ms. Allocated memory is still 167.8MB. Free memory was 86.1MB in the beginning and 81.7MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 09:48:09,581 INFO L158 Benchmark]: IcfgBuilder took 897.08ms. Allocated memory is still 167.8MB. Free memory was 81.7MB in the beginning and 83.7MB in the end (delta: -2.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-03-03 09:48:09,581 INFO L158 Benchmark]: TraceAbstraction took 6392.24ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 83.7MB in the beginning and 228.5MB in the end (delta: -144.8MB). Peak memory consumption was 102.5MB. Max. memory is 16.1GB. [2025-03-03 09:48:09,581 INFO L158 Benchmark]: Witness Printer took 106.01ms. Allocated memory is still 411.0MB. Free memory was 228.5MB in the beginning and 216.0MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 09:48:09,582 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 119.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.44ms. Allocated memory is still 167.8MB. Free memory was 120.1MB in the beginning and 91.1MB in the end (delta: 28.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.16ms. Allocated memory is still 167.8MB. Free memory was 91.1MB in the beginning and 86.1MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 74.34ms. Allocated memory is still 167.8MB. Free memory was 86.1MB in the beginning and 81.7MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 897.08ms. Allocated memory is still 167.8MB. Free memory was 81.7MB in the beginning and 83.7MB in the end (delta: -2.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6392.24ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 83.7MB in the beginning and 228.5MB in the end (delta: -144.8MB). Peak memory consumption was 102.5MB. Max. memory is 16.1GB. * Witness Printer took 106.01ms. Allocated memory is still 411.0MB. Free memory was 228.5MB in the beginning and 216.0MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 567]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1305 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1305 mSDsluCounter, 805 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 679 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4095 IncrementalHoareTripleChecker+Invalid, 4774 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 679 mSolverCounterUnsat, 739 mSDtfsCounter, 4095 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1838occurred in iteration=9, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 786 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1916 NumberOfCodeBlocks, 1916 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1905 ConstructedInterpolants, 0 QuantifiedInterpolants, 4099 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 792/792 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Location Invariant Derived location invariant: (((((a21 == 1) && (a16 <= 5)) || ((a7 != 1) && (a21 == 1))) || (a20 == 1)) || ((a17 == 1) && (a16 <= 5))) RESULT: Ultimate proved your program to be correct! [2025-03-03 09:48:09,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE