./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal26.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.cal26.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 0c6bbc64efe7618459d561ffeb74d083d28225e32d0224841d795b73bd75652d --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 22:42:02,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 22:42:02,848 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-07 22:42:02,851 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 22:42:02,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 22:42:02,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 22:42:02,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 22:42:02,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 22:42:02,879 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 22:42:02,879 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 22:42:02,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 22:42:02,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 22:42:02,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 22:42:02,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 22:42:02,880 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 22:42:02,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 22:42:02,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 22:42:02,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 22:42:02,881 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 22:42:02,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 22:42:02,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 22:42:02,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 22:42:02,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 22:42:02,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 22:42:02,881 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 22:42:02,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 22:42:02,881 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 -> 0c6bbc64efe7618459d561ffeb74d083d28225e32d0224841d795b73bd75652d [2025-02-07 22:42:03,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 22:42:03,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 22:42:03,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 22:42:03,048 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 22:42:03,048 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 22:42:03,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal26.c [2025-02-07 22:42:04,114 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2a1b0d6e9/20570c9e85c34ee89d25c3bedbeb020d/FLAG77477121e [2025-02-07 22:42:04,655 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 22:42:04,655 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal26.c [2025-02-07 22:42:04,689 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2a1b0d6e9/20570c9e85c34ee89d25c3bedbeb020d/FLAG77477121e [2025-02-07 22:42:05,187 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2a1b0d6e9/20570c9e85c34ee89d25c3bedbeb020d [2025-02-07 22:42:05,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 22:42:05,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 22:42:05,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 22:42:05,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 22:42:05,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 22:42:05,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 10:42:05" (1/1) ... [2025-02-07 22:42:05,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3929bb75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:05, skipping insertion in model container [2025-02-07 22:42:05,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 10:42:05" (1/1) ... [2025-02-07 22:42:05,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 22:42:05,465 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.cal26.c[1245,1258] [2025-02-07 22:42:06,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 22:42:06,456 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 22:42:06,464 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.cal26.c[1245,1258] [2025-02-07 22:42:07,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 22:42:07,076 INFO L204 MainTranslator]: Completed translation [2025-02-07 22:42:07,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07 WrapperNode [2025-02-07 22:42:07,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 22:42:07,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 22:42:07,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 22:42:07,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 22:42:07,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:07,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:09,703 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35436 [2025-02-07 22:42:09,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 22:42:09,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 22:42:09,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 22:42:09,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 22:42:09,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:09,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:11,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:11,359 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 22:42:11,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:11,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:12,338 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:12,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:12,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:12,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:13,310 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 22:42:13,312 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 22:42:13,312 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 22:42:13,313 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 22:42:13,313 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (1/1) ... [2025-02-07 22:42:13,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 22:42:13,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 22:42:13,350 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 22:42:13,352 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 22:42:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 22:42:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 22:42:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 22:42:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 22:42:13,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 22:42:14,457 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 22:42:14,458 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 22:43:20,915 INFO L? ?]: Removed 19321 outVars from TransFormulas that were not future-live. [2025-02-07 22:43:20,915 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 22:43:21,454 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 22:43:21,455 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 22:43:21,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 10:43:21 BoogieIcfgContainer [2025-02-07 22:43:21,455 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 22:43:21,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 22:43:21,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 22:43:21,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 22:43:21,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 10:42:05" (1/3) ... [2025-02-07 22:43:21,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc10ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 10:43:21, skipping insertion in model container [2025-02-07 22:43:21,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 10:42:07" (2/3) ... [2025-02-07 22:43:21,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc10ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 10:43:21, skipping insertion in model container [2025-02-07 22:43:21,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 10:43:21" (3/3) ... [2025-02-07 22:43:21,461 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal26.c [2025-02-07 22:43:21,471 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 22:43:21,472 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.cal26.c that has 1 procedures, 12287 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 22:43:21,622 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 22:43:21,632 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;@3153c8a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 22:43:21,632 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 22:43:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 12287 states, 12285 states have (on average 1.5006105006105006) internal successors, (18435), 12286 states have internal predecessors, (18435), 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 22:43:21,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2025-02-07 22:43:21,670 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 22:43:21,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:21,671 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 22:43:21,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 22:43:21,674 INFO L85 PathProgramCache]: Analyzing trace with hash 414273857, now seen corresponding path program 1 times [2025-02-07 22:43:21,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 22:43:21,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859713482] [2025-02-07 22:43:21,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 22:43:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 22:43:21,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 228 statements into 1 equivalence classes. [2025-02-07 22:43:22,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 228 of 228 statements. [2025-02-07 22:43:22,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 22:43:22,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 22:43:22,967 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 22:43:22,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 22:43:22,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859713482] [2025-02-07 22:43:22,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859713482] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 22:43:22,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 22:43:22,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 22:43:22,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371380495] [2025-02-07 22:43:22,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 22:43:22,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 22:43:22,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 22:43:22,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 22:43:22,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 22:43:23,017 INFO L87 Difference]: Start difference. First operand has 12287 states, 12285 states have (on average 1.5006105006105006) internal successors, (18435), 12286 states have internal predecessors, (18435), 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 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 22:43:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 22:43:27,826 INFO L93 Difference]: Finished difference Result 24485 states and 36739 transitions. [2025-02-07 22:43:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 22:43:27,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 228 [2025-02-07 22:43:27,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 22:43:27,868 INFO L225 Difference]: With dead ends: 24485 [2025-02-07 22:43:27,869 INFO L226 Difference]: Without dead ends: 12287 [2025-02-07 22:43:27,885 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 22:43:27,886 INFO L435 NwaCegarLoop]: 15364 mSDtfsCounter, 0 mSDsluCounter, 30723 mSDsCounter, 0 mSdLazyCounter, 9208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46087 SdHoareTripleChecker+Invalid, 9208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-02-07 22:43:27,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46087 Invalid, 9208 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 9208 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-02-07 22:43:27,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12287 states. [2025-02-07 22:43:28,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12287 to 12287. [2025-02-07 22:43:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12287 states, 12286 states have (on average 1.5004069672798308) internal successors, (18434), 12286 states have internal predecessors, (18434), 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 22:43:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12287 states to 12287 states and 18434 transitions. [2025-02-07 22:43:28,169 INFO L78 Accepts]: Start accepts. Automaton has 12287 states and 18434 transitions. Word has length 228 [2025-02-07 22:43:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 22:43:28,172 INFO L471 AbstractCegarLoop]: Abstraction has 12287 states and 18434 transitions. [2025-02-07 22:43:28,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 22:43:28,173 INFO L276 IsEmpty]: Start isEmpty. Operand 12287 states and 18434 transitions. [2025-02-07 22:43:28,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2025-02-07 22:43:28,178 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 22:43:28,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:28,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 22:43:28,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 22:43:28,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 22:43:28,180 INFO L85 PathProgramCache]: Analyzing trace with hash -37712476, now seen corresponding path program 1 times [2025-02-07 22:43:28,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 22:43:28,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879985265] [2025-02-07 22:43:28,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 22:43:28,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 22:43:28,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 229 statements into 1 equivalence classes. [2025-02-07 22:43:28,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 229 of 229 statements. [2025-02-07 22:43:28,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 22:43:28,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 22:43:28,758 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 22:43:28,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 22:43:28,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879985265] [2025-02-07 22:43:28,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879985265] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 22:43:28,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 22:43:28,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 22:43:28,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889723181] [2025-02-07 22:43:28,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 22:43:28,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 22:43:28,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 22:43:28,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 22:43:28,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 22:43:28,762 INFO L87 Difference]: Start difference. First operand 12287 states and 18434 transitions. Second operand has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 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 22:43:34,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 22:43:34,818 INFO L93 Difference]: Finished difference Result 36453 states and 54693 transitions. [2025-02-07 22:43:34,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 22:43:34,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 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 229 [2025-02-07 22:43:34,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 22:43:34,861 INFO L225 Difference]: With dead ends: 36453 [2025-02-07 22:43:34,861 INFO L226 Difference]: Without dead ends: 12287 [2025-02-07 22:43:34,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-07 22:43:34,882 INFO L435 NwaCegarLoop]: 15325 mSDtfsCounter, 53763 mSDsluCounter, 30177 mSDsCounter, 0 mSdLazyCounter, 10065 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53763 SdHoareTripleChecker+Valid, 45502 SdHoareTripleChecker+Invalid, 10177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 10065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2025-02-07 22:43:34,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53763 Valid, 45502 Invalid, 10177 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 10065 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2025-02-07 22:43:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12287 states. [2025-02-07 22:43:35,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12287 to 12287. [2025-02-07 22:43:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12287 states, 12286 states have (on average 1.5003255738238646) internal successors, (18433), 12286 states have internal predecessors, (18433), 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 22:43:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12287 states to 12287 states and 18433 transitions. [2025-02-07 22:43:35,035 INFO L78 Accepts]: Start accepts. Automaton has 12287 states and 18433 transitions. Word has length 229 [2025-02-07 22:43:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 22:43:35,036 INFO L471 AbstractCegarLoop]: Abstraction has 12287 states and 18433 transitions. [2025-02-07 22:43:35,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.8) internal successors, (229), 4 states have internal predecessors, (229), 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 22:43:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand 12287 states and 18433 transitions. [2025-02-07 22:43:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2025-02-07 22:43:35,039 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 22:43:35,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:35,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 22:43:35,040 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 22:43:35,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 22:43:35,043 INFO L85 PathProgramCache]: Analyzing trace with hash -718595851, now seen corresponding path program 1 times [2025-02-07 22:43:35,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 22:43:35,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314427330] [2025-02-07 22:43:35,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 22:43:35,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 22:43:35,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-02-07 22:43:35,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-02-07 22:43:35,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 22:43:35,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 22:43:35,513 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 22:43:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 22:43:35,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314427330] [2025-02-07 22:43:35,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314427330] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 22:43:35,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 22:43:35,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 22:43:35,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819087354] [2025-02-07 22:43:35,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 22:43:35,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 22:43:35,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 22:43:35,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 22:43:35,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 22:43:35,519 INFO L87 Difference]: Start difference. First operand 12287 states and 18433 transitions. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 4 states have internal predecessors, (230), 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)