./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem02_label30.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem02_label30.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 1f76deb0aac2d13590c7cb3a6148c4325e466ac4c549b73efe913c295ef834bc --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 14:08:34,270 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 14:08:34,327 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 14:08:34,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 14:08:34,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 14:08:34,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 14:08:34,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 14:08:34,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 14:08:34,357 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 14:08:34,357 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 14:08:34,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 14:08:34,358 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 14:08:34,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 14:08:34,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 14:08:34,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 14:08:34,359 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 14:08:34,360 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 14:08:34,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 14:08:34,360 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 14:08:34,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 14:08:34,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 14:08:34,360 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 14:08:34,361 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 14:08:34,361 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 14:08:34,361 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 14:08:34,361 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 14:08:34,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 14:08:34,361 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 14:08:34,361 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 14:08:34,361 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 14:08:34,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 14:08:34,361 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 -> 1f76deb0aac2d13590c7cb3a6148c4325e466ac4c549b73efe913c295ef834bc [2025-03-16 14:08:34,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 14:08:34,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 14:08:34,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 14:08:34,612 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 14:08:34,613 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 14:08:34,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem02_label30.c [2025-03-16 14:08:35,084 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc92f72d/bea6393a560840a28f45f215f4dbeac9/FLAG95e4288dc [2025-03-16 14:08:36,754 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 14:08:36,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label30.c [2025-03-16 14:08:36,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc92f72d/bea6393a560840a28f45f215f4dbeac9/FLAG95e4288dc [2025-03-16 14:08:36,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc92f72d/bea6393a560840a28f45f215f4dbeac9 [2025-03-16 14:08:36,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 14:08:36,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 14:08:36,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 14:08:36,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 14:08:36,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 14:08:36,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 02:08:36" (1/1) ... [2025-03-16 14:08:36,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751f065e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:36, skipping insertion in model container [2025-03-16 14:08:36,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 02:08:36" (1/1) ... [2025-03-16 14:08:36,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 14:08:37,030 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/Problem02_label30.c[19968,19981] [2025-03-16 14:08:37,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 14:08:37,060 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 14:08:37,123 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/Problem02_label30.c[19968,19981] [2025-03-16 14:08:37,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 14:08:37,137 INFO L204 MainTranslator]: Completed translation [2025-03-16 14:08:37,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37 WrapperNode [2025-03-16 14:08:37,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 14:08:37,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 14:08:37,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 14:08:37,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 14:08:37,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,154 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,184 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 666 [2025-03-16 14:08:37,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 14:08:37,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 14:08:37,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 14:08:37,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 14:08:37,193 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,217 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]. [2025-03-16 14:08:37,217 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,234 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 14:08:37,249 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 14:08:37,249 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 14:08:37,249 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 14:08:37,250 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (1/1) ... [2025-03-16 14:08:37,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 14:08:37,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:08:37,283 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) [2025-03-16 14:08:37,286 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 [2025-03-16 14:08:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 14:08:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 14:08:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 14:08:37,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 14:08:37,358 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 14:08:37,359 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 14:08:38,000 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2025-03-16 14:08:38,000 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 14:08:38,012 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 14:08:38,012 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 14:08:38,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 02:08:38 BoogieIcfgContainer [2025-03-16 14:08:38,013 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 14:08:38,014 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 14:08:38,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 14:08:38,017 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 14:08:38,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 02:08:36" (1/3) ... [2025-03-16 14:08:38,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75637600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 02:08:38, skipping insertion in model container [2025-03-16 14:08:38,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:08:37" (2/3) ... [2025-03-16 14:08:38,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75637600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 02:08:38, skipping insertion in model container [2025-03-16 14:08:38,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 02:08:38" (3/3) ... [2025-03-16 14:08:38,019 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem02_label30.c [2025-03-16 14:08:38,032 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 14:08:38,034 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem02_label30.c that has 1 procedures, 166 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 14:08:38,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 14:08:38,096 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;@1c68ff5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 14:08:38,097 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 14:08:38,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 164 states have (on average 1.9085365853658536) internal successors, (313), 165 states have internal predecessors, (313), 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) [2025-03-16 14:08:38,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-16 14:08:38,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:08:38,107 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] [2025-03-16 14:08:38,107 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:08:38,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:08:38,111 INFO L85 PathProgramCache]: Analyzing trace with hash 307305279, now seen corresponding path program 1 times [2025-03-16 14:08:38,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:08:38,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731513826] [2025-03-16 14:08:38,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:08:38,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:08:38,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-16 14:08:38,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-16 14:08:38,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:08:38,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:08:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:08:38,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:08:38,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731513826] [2025-03-16 14:08:38,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731513826] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:08:38,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:08:38,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:08:38,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143811619] [2025-03-16 14:08:38,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:08:38,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 14:08:38,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:08:38,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 14:08:38,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 14:08:38,481 INFO L87 Difference]: Start difference. First operand has 166 states, 164 states have (on average 1.9085365853658536) internal successors, (313), 165 states have internal predecessors, (313), 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 2 states, 2 states have (on average 63.5) 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) [2025-03-16 14:08:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:08:38,508 INFO L93 Difference]: Finished difference Result 331 states and 625 transitions. [2025-03-16 14:08:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 14:08:38,510 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 63.5) 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 [2025-03-16 14:08:38,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:08:38,518 INFO L225 Difference]: With dead ends: 331 [2025-03-16 14:08:38,519 INFO L226 Difference]: Without dead ends: 163 [2025-03-16 14:08:38,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 14:08:38,524 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:08:38,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:08:38,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-03-16 14:08:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2025-03-16 14:08:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 162 states have internal predecessors, (248), 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) [2025-03-16 14:08:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2025-03-16 14:08:38,560 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 127 [2025-03-16 14:08:38,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:08:38,561 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2025-03-16 14:08:38,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) 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) [2025-03-16 14:08:38,561 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2025-03-16 14:08:38,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-16 14:08:38,565 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:08:38,565 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] [2025-03-16 14:08:38,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 14:08:38,565 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:08:38,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:08:38,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1730943008, now seen corresponding path program 1 times [2025-03-16 14:08:38,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:08:38,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303255189] [2025-03-16 14:08:38,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:08:38,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:08:38,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-16 14:08:38,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-16 14:08:38,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:08:38,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:08:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:08:38,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:08:38,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303255189] [2025-03-16 14:08:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303255189] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:08:38,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:08:38,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:08:38,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009881199] [2025-03-16 14:08:38,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:08:38,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:08:38,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:08:38,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:08:38,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:08:38,865 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. 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) [2025-03-16 14:08:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:08:39,319 INFO L93 Difference]: Finished difference Result 466 states and 712 transitions. [2025-03-16 14:08:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:08:39,319 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 [2025-03-16 14:08:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:08:39,321 INFO L225 Difference]: With dead ends: 466 [2025-03-16 14:08:39,321 INFO L226 Difference]: Without dead ends: 304 [2025-03-16 14:08:39,322 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 [2025-03-16 14:08:39,323 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 92 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 14:08:39,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 43 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 14:08:39,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2025-03-16 14:08:39,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2025-03-16 14:08:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.528052805280528) internal successors, (463), 303 states have internal predecessors, (463), 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) [2025-03-16 14:08:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 463 transitions. [2025-03-16 14:08:39,346 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 463 transitions. Word has length 127 [2025-03-16 14:08:39,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:08:39,347 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 463 transitions. [2025-03-16 14:08:39,347 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) [2025-03-16 14:08:39,347 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 463 transitions. [2025-03-16 14:08:39,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-16 14:08:39,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:08:39,350 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:08:39,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 14:08:39,350 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:08:39,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:08:39,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1481523324, now seen corresponding path program 1 times [2025-03-16 14:08:39,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:08:39,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164688797] [2025-03-16 14:08:39,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:08:39,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:08:39,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-16 14:08:39,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-16 14:08:39,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:08:39,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:08:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:08:39,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:08:39,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164688797] [2025-03-16 14:08:39,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164688797] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:08:39,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:08:39,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:08:39,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787524466] [2025-03-16 14:08:39,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:08:39,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:08:39,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:08:39,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:08:39,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:08:39,503 INFO L87 Difference]: Start difference. First operand 304 states and 463 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 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) [2025-03-16 14:08:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:08:39,947 INFO L93 Difference]: Finished difference Result 901 states and 1374 transitions. [2025-03-16 14:08:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:08:39,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 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 138 [2025-03-16 14:08:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:08:39,950 INFO L225 Difference]: With dead ends: 901 [2025-03-16 14:08:39,950 INFO L226 Difference]: Without dead ends: 598 [2025-03-16 14:08:39,951 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 [2025-03-16 14:08:39,951 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 193 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 14:08:39,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 70 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 14:08:39,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2025-03-16 14:08:39,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 595. [2025-03-16 14:08:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 594 states have (on average 1.4781144781144782) internal successors, (878), 594 states have internal predecessors, (878), 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) [2025-03-16 14:08:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 878 transitions. [2025-03-16 14:08:39,979 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 878 transitions. Word has length 138 [2025-03-16 14:08:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:08:39,979 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 878 transitions. [2025-03-16 14:08:39,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 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) [2025-03-16 14:08:39,979 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 878 transitions. [2025-03-16 14:08:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-16 14:08:39,984 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:08:39,984 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:08:39,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 14:08:39,984 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:08:39,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:08:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash 880842885, now seen corresponding path program 1 times [2025-03-16 14:08:39,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:08:39,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619919241] [2025-03-16 14:08:39,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:08:39,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:08:40,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-16 14:08:40,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 14:08:40,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:08:40,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:08:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 14:08:40,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:08:40,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619919241] [2025-03-16 14:08:40,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619919241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:08:40,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:08:40,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:08:40,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223687004] [2025-03-16 14:08:40,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:08:40,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:08:40,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:08:40,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:08:40,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:08:40,108 INFO L87 Difference]: Start difference. First operand 595 states and 878 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2025-03-16 14:08:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:08:40,305 INFO L93 Difference]: Finished difference Result 1039 states and 1540 transitions. [2025-03-16 14:08:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:08:40,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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 142 [2025-03-16 14:08:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:08:40,307 INFO L225 Difference]: With dead ends: 1039 [2025-03-16 14:08:40,307 INFO L226 Difference]: Without dead ends: 445 [2025-03-16 14:08:40,309 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 [2025-03-16 14:08:40,309 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 200 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 14:08:40,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 22 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 14:08:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2025-03-16 14:08:40,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2025-03-16 14:08:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.4256756756756757) internal successors, (633), 444 states have internal predecessors, (633), 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) [2025-03-16 14:08:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 633 transitions. [2025-03-16 14:08:40,322 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 633 transitions. Word has length 142 [2025-03-16 14:08:40,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:08:40,322 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 633 transitions. [2025-03-16 14:08:40,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 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) [2025-03-16 14:08:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 633 transitions. [2025-03-16 14:08:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-16 14:08:40,324 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:08:40,324 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:08:40,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 14:08:40,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:08:40,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:08:40,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1130186537, now seen corresponding path program 1 times [2025-03-16 14:08:40,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:08:40,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717975586] [2025-03-16 14:08:40,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:08:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:08:40,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-16 14:08:40,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-16 14:08:40,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:08:40,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:08:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:08:40,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:08:40,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717975586] [2025-03-16 14:08:40,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717975586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:08:40,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:08:40,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:08:40,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833572626] [2025-03-16 14:08:40,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:08:40,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:08:40,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:08:40,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:08:40,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:08:40,441 INFO L87 Difference]: Start difference. First operand 445 states and 633 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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) [2025-03-16 14:08:40,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:08:40,760 INFO L93 Difference]: Finished difference Result 1325 states and 1887 transitions. [2025-03-16 14:08:40,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:08:40,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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 145 [2025-03-16 14:08:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:08:40,763 INFO L225 Difference]: With dead ends: 1325 [2025-03-16 14:08:40,765 INFO L226 Difference]: Without dead ends: 881 [2025-03-16 14:08:40,766 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 [2025-03-16 14:08:40,769 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 148 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 14:08:40,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 81 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 14:08:40,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2025-03-16 14:08:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 874. [2025-03-16 14:08:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 873 states have (on average 1.3734249713631157) internal successors, (1199), 873 states have internal predecessors, (1199), 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) [2025-03-16 14:08:40,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1199 transitions. [2025-03-16 14:08:40,786 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1199 transitions. Word has length 145 [2025-03-16 14:08:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:08:40,787 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1199 transitions. [2025-03-16 14:08:40,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 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) [2025-03-16 14:08:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1199 transitions. [2025-03-16 14:08:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-16 14:08:40,789 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:08:40,789 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:08:40,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 14:08:40,790 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:08:40,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:08:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash 318696630, now seen corresponding path program 1 times [2025-03-16 14:08:40,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:08:40,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208717730] [2025-03-16 14:08:40,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:08:40,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:08:40,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-16 14:08:40,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-16 14:08:40,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:08:40,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:08:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:08:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:08:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208717730] [2025-03-16 14:08:40,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208717730] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:08:40,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:08:40,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:08:40,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053996746] [2025-03-16 14:08:40,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:08:40,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:08:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:08:40,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:08:40,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:08:40,881 INFO L87 Difference]: Start difference. First operand 874 states and 1199 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2025-03-16 14:08:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:08:41,227 INFO L93 Difference]: Finished difference Result 2309 states and 3169 transitions. [2025-03-16 14:08:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:08:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 149 [2025-03-16 14:08:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:08:41,231 INFO L225 Difference]: With dead ends: 2309 [2025-03-16 14:08:41,232 INFO L226 Difference]: Without dead ends: 1436 [2025-03-16 14:08:41,233 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 [2025-03-16 14:08:41,233 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 141 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 14:08:41,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 56 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 14:08:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2025-03-16 14:08:41,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1436. [2025-03-16 14:08:41,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 1.2989547038327527) internal successors, (1864), 1435 states have internal predecessors, (1864), 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) [2025-03-16 14:08:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 1864 transitions. [2025-03-16 14:08:41,255 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 1864 transitions. Word has length 149 [2025-03-16 14:08:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:08:41,255 INFO L471 AbstractCegarLoop]: Abstraction has 1436 states and 1864 transitions. [2025-03-16 14:08:41,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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) [2025-03-16 14:08:41,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 1864 transitions. [2025-03-16 14:08:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-16 14:08:41,257 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:08:41,258 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:08:41,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 14:08:41,258 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:08:41,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:08:41,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1293267277, now seen corresponding path program 1 times [2025-03-16 14:08:41,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:08:41,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172661141] [2025-03-16 14:08:41,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:08:41,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:08:41,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-16 14:08:41,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-16 14:08:41,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:08:41,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:08:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:08:41,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:08:41,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172661141] [2025-03-16 14:08:41,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172661141] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:08:41,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:08:41,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:08:41,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818601138] [2025-03-16 14:08:41,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:08:41,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:08:41,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:08:41,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:08:41,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:08:41,328 INFO L87 Difference]: Start difference. First operand 1436 states and 1864 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2025-03-16 14:08:41,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:08:41,675 INFO L93 Difference]: Finished difference Result 3991 states and 5179 transitions. [2025-03-16 14:08:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:08:41,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 149 [2025-03-16 14:08:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:08:41,682 INFO L225 Difference]: With dead ends: 3991 [2025-03-16 14:08:41,682 INFO L226 Difference]: Without dead ends: 2556 [2025-03-16 14:08:41,684 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 [2025-03-16 14:08:41,684 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 157 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 14:08:41,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 60 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 14:08:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2025-03-16 14:08:41,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2276. [2025-03-16 14:08:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 2275 states have (on average 1.2325274725274726) internal successors, (2804), 2275 states have internal predecessors, (2804), 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) [2025-03-16 14:08:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2804 transitions. [2025-03-16 14:08:41,724 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2804 transitions. Word has length 149 [2025-03-16 14:08:41,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:08:41,724 INFO L471 AbstractCegarLoop]: Abstraction has 2276 states and 2804 transitions. [2025-03-16 14:08:41,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2025-03-16 14:08:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2804 transitions. [2025-03-16 14:08:41,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-16 14:08:41,728 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:08:41,728 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:08:41,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 14:08:41,729 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:08:41,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:08:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 953307947, now seen corresponding path program 1 times [2025-03-16 14:08:41,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:08:41,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845893307] [2025-03-16 14:08:41,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:08:41,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:08:41,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-16 14:08:41,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-16 14:08:41,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:08:41,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:08:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 14:08:41,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:08:41,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845893307] [2025-03-16 14:08:41,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845893307] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:08:41,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:08:41,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:08:41,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836847260] [2025-03-16 14:08:41,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:08:41,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:08:41,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:08:41,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:08:41,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:08:41,799 INFO L87 Difference]: Start difference. First operand 2276 states and 2804 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2025-03-16 14:08:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:08:42,180 INFO L93 Difference]: Finished difference Result 3399 states and 4169 transitions. [2025-03-16 14:08:42,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:08:42,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 154 [2025-03-16 14:08:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:08:42,181 INFO L225 Difference]: With dead ends: 3399 [2025-03-16 14:08:42,181 INFO L226 Difference]: Without dead ends: 0 [2025-03-16 14:08:42,184 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 [2025-03-16 14:08:42,185 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 138 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 14:08:42,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 231 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 14:08:42,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-16 14:08:42,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-16 14:08:42,186 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) [2025-03-16 14:08:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-16 14:08:42,186 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2025-03-16 14:08:42,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:08:42,186 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-16 14:08:42,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2025-03-16 14:08:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-16 14:08:42,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-16 14:08:42,189 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 14:08:42,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 14:08:42,192 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:08:42,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-16 14:08:42,286 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 14:08:42,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 02:08:42 BoogieIcfgContainer [2025-03-16 14:08:42,302 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 14:08:42,303 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 14:08:42,303 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 14:08:42,303 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 14:08:42,304 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 02:08:38" (3/4) ... [2025-03-16 14:08:42,306 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-16 14:08:42,320 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-03-16 14:08:42,321 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-16 14:08:42,321 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-16 14:08:42,322 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-16 14:08:42,419 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-16 14:08:42,419 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-16 14:08:42,419 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 14:08:42,420 INFO L158 Benchmark]: Toolchain (without parser) took 5613.96ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 111.9MB in the beginning and 163.1MB in the end (delta: -51.2MB). Peak memory consumption was 177.6MB. Max. memory is 16.1GB. [2025-03-16 14:08:42,420 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 226.5MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 14:08:42,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.99ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 85.1MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-16 14:08:42,420 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.50ms. Allocated memory is still 142.6MB. Free memory was 85.1MB in the beginning and 80.2MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 14:08:42,421 INFO L158 Benchmark]: Boogie Preprocessor took 63.37ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 76.2MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 14:08:42,421 INFO L158 Benchmark]: IcfgBuilder took 763.84ms. Allocated memory is still 142.6MB. Free memory was 76.2MB in the beginning and 72.0MB in the end (delta: 4.2MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. [2025-03-16 14:08:42,422 INFO L158 Benchmark]: TraceAbstraction took 4288.10ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 72.0MB in the beginning and 176.2MB in the end (delta: -104.2MB). Peak memory consumption was 119.4MB. Max. memory is 16.1GB. [2025-03-16 14:08:42,422 INFO L158 Benchmark]: Witness Printer took 116.50ms. Allocated memory is still 369.1MB. Free memory was 176.2MB in the beginning and 163.1MB in the end (delta: 13.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-16 14:08:42,423 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 226.5MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.99ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 85.1MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.50ms. Allocated memory is still 142.6MB. Free memory was 85.1MB in the beginning and 80.2MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.37ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 76.2MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 763.84ms. Allocated memory is still 142.6MB. Free memory was 76.2MB in the beginning and 72.0MB in the end (delta: 4.2MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4288.10ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 72.0MB in the beginning and 176.2MB in the end (delta: -104.2MB). Peak memory consumption was 119.4MB. Max. memory is 16.1GB. * Witness Printer took 116.50ms. Allocated memory is still 369.1MB. Free memory was 176.2MB in the beginning and 163.1MB in the end (delta: 13.1MB). Peak memory consumption was 16.8MB. 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: 566]: 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, 166 locations, 313 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1069 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1069 mSDsluCounter, 814 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 390 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2304 IncrementalHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 390 mSolverCounterUnsat, 730 mSDtfsCounter, 2304 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2276occurred in iteration=7, InterpolantAutomatonStates: 23, 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, 8 MinimizatonAttempts, 290 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1131 NumberOfCodeBlocks, 1131 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1123 ConstructedInterpolants, 0 QuantifiedInterpolants, 1543 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 126/126 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: 616]: Location Invariant Derived location invariant: (((((a17 == 8) && (a11 <= 0)) || (((a11 == 1) && (a17 <= 8)) && (a25 == 0))) || (((a17 == 8) && (a11 == 1)) && (a19 == 1))) || (((a28 <= 9) && (a11 == 1)) && (a17 <= 8))) RESULT: Ultimate proved your program to be correct! [2025-03-16 14:08:42,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE