./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal76.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.cal76.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 7adc518d67f6328308eb61f2fb7eaeb0a7c2f702532e8f116d34c4f24b9bc0e5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 21:30:06,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 21:30:06,440 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-16 21:30:06,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 21:30:06,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 21:30:06,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 21:30:06,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 21:30:06,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 21:30:06,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 21:30:06,470 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 21:30:06,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 21:30:06,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 21:30:06,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 21:30:06,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 21:30:06,471 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 21:30:06,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 21:30:06,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 21:30:06,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 21:30:06,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 21:30:06,472 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 21:30:06,472 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 21:30:06,472 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 21:30:06,472 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 21:30:06,472 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 21:30:06,472 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 21:30:06,472 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 21:30:06,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 21:30:06,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 21:30:06,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 21:30:06,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 21:30:06,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 21:30:06,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 21:30:06,473 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 21:30:06,473 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 21:30:06,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 21:30:06,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 21:30:06,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 21:30:06,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 21:30:06,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 21:30:06,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 21:30:06,474 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7adc518d67f6328308eb61f2fb7eaeb0a7c2f702532e8f116d34c4f24b9bc0e5 [2025-03-16 21:30:06,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 21:30:06,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 21:30:06,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 21:30:06,741 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 21:30:06,741 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 21:30:06,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal76.c [2025-03-16 21:30:07,880 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00795e12/abf0ea0e20cc4f92adc2023d9dda70bb/FLAG991b59318 [2025-03-16 21:30:08,423 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 21:30:08,423 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal76.c [2025-03-16 21:30:08,465 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00795e12/abf0ea0e20cc4f92adc2023d9dda70bb/FLAG991b59318 [2025-03-16 21:30:08,483 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00795e12/abf0ea0e20cc4f92adc2023d9dda70bb [2025-03-16 21:30:08,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 21:30:08,486 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 21:30:08,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 21:30:08,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 21:30:08,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 21:30:08,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 09:30:08" (1/1) ... [2025-03-16 21:30:08,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d7f33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:08, skipping insertion in model container [2025-03-16 21:30:08,494 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 09:30:08" (1/1) ... [2025-03-16 21:30:08,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 21:30:08,812 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/hardware-verification-bv/btor2c-lazyMod.cal76.c[1245,1258] [2025-03-16 21:30:09,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 21:30:09,697 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 21:30:09,706 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/hardware-verification-bv/btor2c-lazyMod.cal76.c[1245,1258] [2025-03-16 21:30:10,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 21:30:10,330 INFO L204 MainTranslator]: Completed translation [2025-03-16 21:30:10,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10 WrapperNode [2025-03-16 21:30:10,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 21:30:10,332 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 21:30:10,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 21:30:10,332 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 21:30:10,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:10,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:12,817 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35941 [2025-03-16 21:30:12,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 21:30:12,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 21:30:12,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 21:30:12,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 21:30:12,825 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:12,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:13,887 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:14,270 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]. [2025-03-16 21:30:14,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:14,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:14,965 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:15,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:15,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:15,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:15,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 21:30:15,645 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 21:30:15,645 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 21:30:15,645 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 21:30:15,646 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (1/1) ... [2025-03-16 21:30:15,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 21:30:15,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 21:30:15,669 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 21:30:15,671 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 21:30:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 21:30:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 21:30:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 21:30:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 21:30:15,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 21:30:16,968 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 21:30:16,970 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 21:31:13,433 INFO L? ?]: Removed 19827 outVars from TransFormulas that were not future-live. [2025-03-16 21:31:13,433 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 21:31:14,021 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 21:31:14,021 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 21:31:14,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 09:31:14 BoogieIcfgContainer [2025-03-16 21:31:14,022 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 21:31:14,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 21:31:14,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 21:31:14,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 21:31:14,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 09:30:08" (1/3) ... [2025-03-16 21:31:14,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea705d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 09:31:14, skipping insertion in model container [2025-03-16 21:31:14,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 09:30:10" (2/3) ... [2025-03-16 21:31:14,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ea705d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 09:31:14, skipping insertion in model container [2025-03-16 21:31:14,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 09:31:14" (3/3) ... [2025-03-16 21:31:14,028 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal76.c [2025-03-16 21:31:14,039 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 21:31:14,040 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.cal76.c that has 1 procedures, 12344 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 21:31:14,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 21:31:14,246 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;@391e3495, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 21:31:14,246 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 21:31:14,275 INFO L276 IsEmpty]: Start isEmpty. Operand has 12344 states, 12342 states have (on average 1.5004861448711717) internal successors, (18519), 12343 states have internal predecessors, (18519), 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 21:31:14,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 21:31:14,285 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 21:31:14,285 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] [2025-03-16 21:31:14,286 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 21:31:14,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 21:31:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash -857019528, now seen corresponding path program 1 times [2025-03-16 21:31:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 21:31:14,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396324332] [2025-03-16 21:31:14,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 21:31:14,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 21:31:14,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 21:31:14,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 21:31:14,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 21:31:14,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 21:31:15,299 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 21:31:15,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 21:31:15,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396324332] [2025-03-16 21:31:15,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396324332] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 21:31:15,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 21:31:15,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 21:31:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959848834] [2025-03-16 21:31:15,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 21:31:15,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 21:31:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 21:31:15,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 21:31:15,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 21:31:15,347 INFO L87 Difference]: Start difference. First operand has 12344 states, 12342 states have (on average 1.5004861448711717) internal successors, (18519), 12343 states have internal predecessors, (18519), 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 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 21:31:19,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 21:31:19,387 INFO L93 Difference]: Finished difference Result 24547 states and 36829 transitions. [2025-03-16 21:31:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 21:31:19,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 116 [2025-03-16 21:31:19,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 21:31:19,431 INFO L225 Difference]: With dead ends: 24547 [2025-03-16 21:31:19,431 INFO L226 Difference]: Without dead ends: 12344 [2025-03-16 21:31:19,448 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 [2025-03-16 21:31:19,451 INFO L435 NwaCegarLoop]: 15433 mSDtfsCounter, 0 mSDsluCounter, 30861 mSDsCounter, 0 mSdLazyCounter, 9253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46294 SdHoareTripleChecker+Invalid, 9253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-16 21:31:19,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46294 Invalid, 9253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 9253 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-16 21:31:19,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12344 states. [2025-03-16 21:31:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12344 to 12344. [2025-03-16 21:31:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12344 states, 12343 states have (on average 1.5002835615328527) internal successors, (18518), 12343 states have internal predecessors, (18518), 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 21:31:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12344 states to 12344 states and 18518 transitions. [2025-03-16 21:31:19,726 INFO L78 Accepts]: Start accepts. Automaton has 12344 states and 18518 transitions. Word has length 116 [2025-03-16 21:31:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 21:31:19,727 INFO L471 AbstractCegarLoop]: Abstraction has 12344 states and 18518 transitions. [2025-03-16 21:31:19,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 21:31:19,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12344 states and 18518 transitions. [2025-03-16 21:31:19,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-16 21:31:19,728 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 21:31:19,731 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] [2025-03-16 21:31:19,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 21:31:19,731 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 21:31:19,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 21:31:19,732 INFO L85 PathProgramCache]: Analyzing trace with hash -793101250, now seen corresponding path program 1 times [2025-03-16 21:31:19,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 21:31:19,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729720530] [2025-03-16 21:31:19,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 21:31:19,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 21:31:19,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-16 21:31:19,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-16 21:31:19,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 21:31:19,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 21:31:20,127 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 21:31:20,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 21:31:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729720530] [2025-03-16 21:31:20,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729720530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 21:31:20,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 21:31:20,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 21:31:20,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506819964] [2025-03-16 21:31:20,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 21:31:20,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 21:31:20,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 21:31:20,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 21:31:20,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 21:31:20,130 INFO L87 Difference]: Start difference. First operand 12344 states and 18518 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 21:31:24,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 21:31:24,022 INFO L93 Difference]: Finished difference Result 24549 states and 36828 transitions. [2025-03-16 21:31:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 21:31:24,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 117 [2025-03-16 21:31:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 21:31:24,053 INFO L225 Difference]: With dead ends: 24549 [2025-03-16 21:31:24,054 INFO L226 Difference]: Without dead ends: 12346 [2025-03-16 21:31:24,068 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 [2025-03-16 21:31:24,068 INFO L435 NwaCegarLoop]: 15433 mSDtfsCounter, 0 mSDsluCounter, 30858 mSDsCounter, 0 mSdLazyCounter, 9256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46291 SdHoareTripleChecker+Invalid, 9256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-03-16 21:31:24,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46291 Invalid, 9256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 9256 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-03-16 21:31:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12346 states. [2025-03-16 21:31:24,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12346 to 12346. [2025-03-16 21:31:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12346 states, 12345 states have (on average 1.5002025111381125) internal successors, (18520), 12345 states have internal predecessors, (18520), 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 21:31:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12346 states to 12346 states and 18520 transitions. [2025-03-16 21:31:24,245 INFO L78 Accepts]: Start accepts. Automaton has 12346 states and 18520 transitions. Word has length 117 [2025-03-16 21:31:24,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 21:31:24,246 INFO L471 AbstractCegarLoop]: Abstraction has 12346 states and 18520 transitions. [2025-03-16 21:31:24,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 21:31:24,246 INFO L276 IsEmpty]: Start isEmpty. Operand 12346 states and 18520 transitions. [2025-03-16 21:31:24,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-16 21:31:24,247 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 21:31:24,247 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] [2025-03-16 21:31:24,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 21:31:24,247 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 21:31:24,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 21:31:24,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1179771853, now seen corresponding path program 1 times [2025-03-16 21:31:24,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 21:31:24,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658143614] [2025-03-16 21:31:24,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 21:31:24,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 21:31:24,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-16 21:31:24,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-16 21:31:24,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 21:31:24,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 21:31:24,846 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 21:31:24,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 21:31:24,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658143614] [2025-03-16 21:31:24,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658143614] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 21:31:24,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 21:31:24,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 21:31:24,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108958165] [2025-03-16 21:31:24,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 21:31:24,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 21:31:24,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 21:31:24,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 21:31:24,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 21:31:24,847 INFO L87 Difference]: Start difference. First operand 12346 states and 18520 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 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 21:31:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 21:31:30,050 INFO L93 Difference]: Finished difference Result 24644 states and 36964 transitions. [2025-03-16 21:31:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 21:31:30,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 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 118 [2025-03-16 21:31:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 21:31:30,069 INFO L225 Difference]: With dead ends: 24644 [2025-03-16 21:31:30,069 INFO L226 Difference]: Without dead ends: 12439 [2025-03-16 21:31:30,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-16 21:31:30,084 INFO L435 NwaCegarLoop]: 15370 mSDtfsCounter, 18683 mSDsluCounter, 46110 mSDsCounter, 0 mSdLazyCounter, 12583 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18683 SdHoareTripleChecker+Valid, 61480 SdHoareTripleChecker+Invalid, 12583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-03-16 21:31:30,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18683 Valid, 61480 Invalid, 12583 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 12583 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-03-16 21:31:30,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2025-03-16 21:31:30,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 12420. [2025-03-16 21:31:30,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12420 states, 12419 states have (on average 1.5001207826717127) internal successors, (18630), 12419 states have internal predecessors, (18630), 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 21:31:30,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12420 states to 12420 states and 18630 transitions. [2025-03-16 21:31:30,264 INFO L78 Accepts]: Start accepts. Automaton has 12420 states and 18630 transitions. Word has length 118 [2025-03-16 21:31:30,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 21:31:30,265 INFO L471 AbstractCegarLoop]: Abstraction has 12420 states and 18630 transitions. [2025-03-16 21:31:30,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 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 21:31:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 12420 states and 18630 transitions. [2025-03-16 21:31:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-16 21:31:30,268 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 21:31:30,268 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] [2025-03-16 21:31:30,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 21:31:30,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 21:31:30,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 21:31:30,269 INFO L85 PathProgramCache]: Analyzing trace with hash -324805373, now seen corresponding path program 1 times [2025-03-16 21:31:30,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 21:31:30,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951620106] [2025-03-16 21:31:30,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 21:31:30,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 21:31:30,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-16 21:31:30,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-16 21:31:30,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 21:31:30,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 21:31:30,793 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 21:31:30,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 21:31:30,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951620106] [2025-03-16 21:31:30,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951620106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 21:31:30,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 21:31:30,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 21:31:30,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081192586] [2025-03-16 21:31:30,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 21:31:30,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 21:31:30,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 21:31:30,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 21:31:30,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-16 21:31:30,796 INFO L87 Difference]: Start difference. First operand 12420 states and 18630 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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)