./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal52.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal52.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 44bf48758489a3c41de6b432a4aba7f5826a63fec5c3fe3ce4a4d0bdc50f3078 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 22:45:12,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 22:45:12,350 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-07 22:45:12,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 22:45:12,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 22:45:12,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 22:45:12,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 22:45:12,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 22:45:12,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 22:45:12,375 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 22:45:12,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 22:45:12,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 22:45:12,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 22:45:12,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 22:45:12,376 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 22:45:12,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 22:45:12,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 22:45:12,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 22:45:12,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 22:45:12,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 22:45:12,378 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 22:45:12,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 22:45:12,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 22:45:12,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 22:45:12,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 22:45:12,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 22:45:12,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 22:45:12,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 22:45:12,378 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44bf48758489a3c41de6b432a4aba7f5826a63fec5c3fe3ce4a4d0bdc50f3078 [2025-02-07 22:45:12,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 22:45:12,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 22:45:12,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 22:45:12,589 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 22:45:12,589 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 22:45:12,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal52.c [2025-02-07 22:45:13,794 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a334a7355/200e7d6a55ad408285b22e906a3d2637/FLAG85be1e744 [2025-02-07 22:45:14,336 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 22:45:14,337 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal52.c [2025-02-07 22:45:14,373 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a334a7355/200e7d6a55ad408285b22e906a3d2637/FLAG85be1e744 [2025-02-07 22:45:14,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a334a7355/200e7d6a55ad408285b22e906a3d2637 [2025-02-07 22:45:14,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 22:45:14,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 22:45:14,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 22:45:14,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 22:45:14,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 22:45:14,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 10:45:14" (1/1) ... [2025-02-07 22:45:14,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6417b1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:14, skipping insertion in model container [2025-02-07 22:45:14,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 10:45:14" (1/1) ... [2025-02-07 22:45:15,115 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 22:45:15,352 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal52.c[1245,1258] [2025-02-07 22:45:16,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 22:45:16,372 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 22:45:16,381 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal52.c[1245,1258] [2025-02-07 22:45:16,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 22:45:16,917 INFO L204 MainTranslator]: Completed translation [2025-02-07 22:45:16,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16 WrapperNode [2025-02-07 22:45:16,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 22:45:16,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 22:45:16,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 22:45:16,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 22:45:16,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:17,061 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:19,225 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36276 [2025-02-07 22:45:19,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 22:45:19,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 22:45:19,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 22:45:19,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 22:45:19,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:19,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:20,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:21,038 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-02-07 22:45:21,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:21,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:21,640 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:21,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:21,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:21,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:22,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 22:45:22,454 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 22:45:22,454 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 22:45:22,454 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 22:45:22,455 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (1/1) ... [2025-02-07 22:45:22,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 22:45:22,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 22:45:22,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 22:45:22,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 22:45:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 22:45:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 22:45:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 22:45:22,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 22:45:22,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 22:45:23,874 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 22:45:23,876 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 22:46:24,656 INFO L? ?]: Removed 20059 outVars from TransFormulas that were not future-live. [2025-02-07 22:46:24,656 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 22:46:25,407 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 22:46:25,407 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 22:46:25,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 10:46:25 BoogieIcfgContainer [2025-02-07 22:46:25,408 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 22:46:25,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 22:46:25,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 22:46:25,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 22:46:25,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 10:45:14" (1/3) ... [2025-02-07 22:46:25,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b4aa30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 10:46:25, skipping insertion in model container [2025-02-07 22:46:25,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:45:16" (2/3) ... [2025-02-07 22:46:25,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b4aa30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 10:46:25, skipping insertion in model container [2025-02-07 22:46:25,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 10:46:25" (3/3) ... [2025-02-07 22:46:25,416 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal52.c [2025-02-07 22:46:25,429 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 22:46:25,430 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.cal52.c that has 1 procedures, 12432 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 22:46:25,624 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 22:46:25,632 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;@5098792d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 22:46:25,632 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 22:46:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 12432 states, 12430 states have (on average 1.5004827031375705) internal successors, (18651), 12431 states have internal predecessors, (18651), 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) [2025-02-07 22:46:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-07 22:46:25,674 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 22:46:25,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 22:46:25,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 22:46:25,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 22:46:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash 101642423, now seen corresponding path program 1 times [2025-02-07 22:46:25,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 22:46:25,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542332417] [2025-02-07 22:46:25,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 22:46:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 22:46:25,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-07 22:46:26,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-07 22:46:26,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 22:46:26,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 22:46:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 22:46:26,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 22:46:26,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542332417] [2025-02-07 22:46:26,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542332417] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 22:46:26,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 22:46:26,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 22:46:26,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716652601] [2025-02-07 22:46:26,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 22:46:26,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 22:46:26,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 22:46:26,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 22:46:26,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 22:46:26,867 INFO L87 Difference]: Start difference. First operand has 12432 states, 12430 states have (on average 1.5004827031375705) internal successors, (18651), 12431 states have internal predecessors, (18651), 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 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 22:46:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 22:46:31,494 INFO L93 Difference]: Finished difference Result 24715 states and 37081 transitions. [2025-02-07 22:46:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 22:46:31,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2025-02-07 22:46:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 22:46:31,544 INFO L225 Difference]: With dead ends: 24715 [2025-02-07 22:46:31,544 INFO L226 Difference]: Without dead ends: 12432 [2025-02-07 22:46:31,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 22:46:31,568 INFO L435 NwaCegarLoop]: 15543 mSDtfsCounter, 0 mSDsluCounter, 31081 mSDsCounter, 0 mSdLazyCounter, 9319 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46624 SdHoareTripleChecker+Invalid, 9319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2025-02-07 22:46:31,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46624 Invalid, 9319 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 9319 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2025-02-07 22:46:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12432 states. [2025-02-07 22:46:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12432 to 12432. [2025-02-07 22:46:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12432 states, 12431 states have (on average 1.5002815541790684) internal successors, (18650), 12431 states have internal predecessors, (18650), 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) [2025-02-07 22:46:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12432 states to 12432 states and 18650 transitions. [2025-02-07 22:46:31,838 INFO L78 Accepts]: Start accepts. Automaton has 12432 states and 18650 transitions. Word has length 162 [2025-02-07 22:46:31,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 22:46:31,840 INFO L471 AbstractCegarLoop]: Abstraction has 12432 states and 18650 transitions. [2025-02-07 22:46:31,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 22:46:31,840 INFO L276 IsEmpty]: Start isEmpty. Operand 12432 states and 18650 transitions. [2025-02-07 22:46:31,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-02-07 22:46:31,846 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 22:46:31,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 22:46:31,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 22:46:31,846 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 22:46:31,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 22:46:31,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1139351848, now seen corresponding path program 1 times [2025-02-07 22:46:31,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 22:46:31,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100068386] [2025-02-07 22:46:31,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 22:46:31,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 22:46:31,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-07 22:46:32,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-07 22:46:32,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 22:46:32,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 22:46:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 22:46:32,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 22:46:32,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100068386] [2025-02-07 22:46:32,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100068386] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 22:46:32,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 22:46:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 22:46:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053868233] [2025-02-07 22:46:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 22:46:32,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 22:46:32,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 22:46:32,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 22:46:32,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 22:46:32,262 INFO L87 Difference]: Start difference. First operand 12432 states and 18650 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2025-02-07 22:46:37,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 22:46:37,090 INFO L93 Difference]: Finished difference Result 24717 states and 37080 transitions. [2025-02-07 22:46:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 22:46:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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 163 [2025-02-07 22:46:37,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 22:46:37,126 INFO L225 Difference]: With dead ends: 24717 [2025-02-07 22:46:37,126 INFO L226 Difference]: Without dead ends: 12434 [2025-02-07 22:46:37,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 22:46:37,141 INFO L435 NwaCegarLoop]: 15543 mSDtfsCounter, 0 mSDsluCounter, 31078 mSDsCounter, 0 mSdLazyCounter, 9322 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46621 SdHoareTripleChecker+Invalid, 9322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-02-07 22:46:37,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46621 Invalid, 9322 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 9322 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2025-02-07 22:46:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12434 states. [2025-02-07 22:46:37,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12434 to 12434. [2025-02-07 22:46:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12434 states, 12433 states have (on average 1.5002010777768842) internal successors, (18652), 12433 states have internal predecessors, (18652), 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) [2025-02-07 22:46:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12434 states to 12434 states and 18652 transitions. [2025-02-07 22:46:37,320 INFO L78 Accepts]: Start accepts. Automaton has 12434 states and 18652 transitions. Word has length 163 [2025-02-07 22:46:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 22:46:37,321 INFO L471 AbstractCegarLoop]: Abstraction has 12434 states and 18652 transitions. [2025-02-07 22:46:37,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2025-02-07 22:46:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand 12434 states and 18652 transitions. [2025-02-07 22:46:37,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-07 22:46:37,323 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 22:46:37,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 22:46:37,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 22:46:37,323 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 22:46:37,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 22:46:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash 971361490, now seen corresponding path program 1 times [2025-02-07 22:46:37,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 22:46:37,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519967931] [2025-02-07 22:46:37,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 22:46:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 22:46:37,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-07 22:46:37,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-07 22:46:37,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 22:46:37,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 22:46:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 22:46:37,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 22:46:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519967931] [2025-02-07 22:46:37,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519967931] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 22:46:37,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 22:46:37,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 22:46:37,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136115376] [2025-02-07 22:46:37,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 22:46:37,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 22:46:37,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 22:46:37,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 22:46:37,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 22:46:37,911 INFO L87 Difference]: Start difference. First operand 12434 states and 18652 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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)