./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.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.vis_arrays_vsaR_p04.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 a85f457a181079a0b5789d13788d6c7347ae80776212b7f747148ec13e9b6cf1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 22:50:17,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 22:50:17,173 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-16 22:50:17,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 22:50:17,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 22:50:17,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 22:50:17,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 22:50:17,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 22:50:17,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 22:50:17,199 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 22:50:17,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 22:50:17,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 22:50:17,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 22:50:17,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 22:50:17,200 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 22:50:17,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 22:50:17,201 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 22:50:17,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 22:50:17,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:50:17,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 22:50:17,202 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 22:50:17,202 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 22:50:17,202 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 22:50:17,202 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 22:50:17,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 22:50:17,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 22:50:17,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 22:50:17,203 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 22:50:17,203 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 22:50:17,203 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 -> a85f457a181079a0b5789d13788d6c7347ae80776212b7f747148ec13e9b6cf1 [2025-03-16 22:50:17,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 22:50:17,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 22:50:17,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 22:50:17,453 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 22:50:17,453 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 22:50:17,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2025-03-16 22:50:18,563 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644152251/97eaef32710d4ceb96293574c54b0763/FLAG7892fe331 [2025-03-16 22:50:18,815 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 22:50:18,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2025-03-16 22:50:18,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644152251/97eaef32710d4ceb96293574c54b0763/FLAG7892fe331 [2025-03-16 22:50:19,138 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644152251/97eaef32710d4ceb96293574c54b0763 [2025-03-16 22:50:19,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 22:50:19,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 22:50:19,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 22:50:19,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 22:50:19,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 22:50:19,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329d6cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19, skipping insertion in model container [2025-03-16 22:50:19,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,169 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 22:50:19,268 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.vis_arrays_vsaR_p04.c[1259,1272] [2025-03-16 22:50:19,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:50:19,321 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 22:50:19,329 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.vis_arrays_vsaR_p04.c[1259,1272] [2025-03-16 22:50:19,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:50:19,373 INFO L204 MainTranslator]: Completed translation [2025-03-16 22:50:19,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19 WrapperNode [2025-03-16 22:50:19,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 22:50:19,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 22:50:19,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 22:50:19,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 22:50:19,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,414 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 191 [2025-03-16 22:50:19,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 22:50:19,414 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 22:50:19,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 22:50:19,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 22:50:19,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,424 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,433 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 22:50:19,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,438 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 22:50:19,443 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 22:50:19,443 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 22:50:19,443 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 22:50:19,444 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (1/1) ... [2025-03-16 22:50:19,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:50:19,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:50:19,473 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 22:50:19,476 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 22:50:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 22:50:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 22:50:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 22:50:19,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 22:50:19,560 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 22:50:19,561 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 22:50:19,804 INFO L? ?]: Removed 66 outVars from TransFormulas that were not future-live. [2025-03-16 22:50:19,805 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 22:50:19,821 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 22:50:19,823 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 22:50:19,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:50:19 BoogieIcfgContainer [2025-03-16 22:50:19,823 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 22:50:19,825 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 22:50:19,825 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 22:50:19,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 22:50:19,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 10:50:19" (1/3) ... [2025-03-16 22:50:19,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a13bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:50:19, skipping insertion in model container [2025-03-16 22:50:19,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:19" (2/3) ... [2025-03-16 22:50:19,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a13bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:50:19, skipping insertion in model container [2025-03-16 22:50:19,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:50:19" (3/3) ... [2025-03-16 22:50:19,830 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p04.c [2025-03-16 22:50:19,840 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 22:50:19,841 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_arrays_vsaR_p04.c that has 1 procedures, 36 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 22:50:19,880 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 22:50:19,890 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;@2abd7764, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 22:50:19,890 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 22:50:19,895 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 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 22:50:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-16 22:50:19,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:50:19,899 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:50:19,900 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:50:19,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:50:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1916289460, now seen corresponding path program 1 times [2025-03-16 22:50:19,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:50:19,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139147037] [2025-03-16 22:50:19,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:50:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:50:19,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-16 22:50:20,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-16 22:50:20,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:50:20,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:50:20,311 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 22:50:20,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:50:20,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139147037] [2025-03-16 22:50:20,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139147037] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:50:20,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:50:20,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:50:20,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541191942] [2025-03-16 22:50:20,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:50:20,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 22:50:20,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:50:20,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 22:50:20,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:50:20,334 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.5) internal successors, (51), 35 states have internal predecessors, (51), 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 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 22:50:20,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:50:20,372 INFO L93 Difference]: Finished difference Result 67 states and 97 transitions. [2025-03-16 22:50:20,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:50:20,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2025-03-16 22:50:20,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:50:20,378 INFO L225 Difference]: With dead ends: 67 [2025-03-16 22:50:20,378 INFO L226 Difference]: Without dead ends: 36 [2025-03-16 22:50:20,380 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 22:50:20,383 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 22:50:20,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 22:50:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-16 22:50:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-03-16 22:50:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 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 22:50:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 50 transitions. [2025-03-16 22:50:20,405 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 50 transitions. Word has length 16 [2025-03-16 22:50:20,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:50:20,405 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 50 transitions. [2025-03-16 22:50:20,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 22:50:20,406 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2025-03-16 22:50:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-16 22:50:20,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:50:20,406 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:50:20,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 22:50:20,407 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:50:20,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:50:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash -719889734, now seen corresponding path program 1 times [2025-03-16 22:50:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:50:20,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581771364] [2025-03-16 22:50:20,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:50:20,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:50:20,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-16 22:50:20,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-16 22:50:20,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:50:20,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:50:20,510 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 22:50:20,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:50:20,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581771364] [2025-03-16 22:50:20,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581771364] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:50:20,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:50:20,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 22:50:20,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108760210] [2025-03-16 22:50:20,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:50:20,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 22:50:20,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:50:20,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 22:50:20,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:50:20,514 INFO L87 Difference]: Start difference. First operand 36 states and 50 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 22:50:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:50:20,558 INFO L93 Difference]: Finished difference Result 69 states and 96 transitions. [2025-03-16 22:50:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:50:20,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2025-03-16 22:50:20,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:50:20,559 INFO L225 Difference]: With dead ends: 69 [2025-03-16 22:50:20,559 INFO L226 Difference]: Without dead ends: 38 [2025-03-16 22:50:20,559 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 22:50:20,560 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 22:50:20,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 22:50:20,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-16 22:50:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-03-16 22:50:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 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 22:50:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2025-03-16 22:50:20,563 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 17 [2025-03-16 22:50:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:50:20,564 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2025-03-16 22:50:20,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 22:50:20,564 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2025-03-16 22:50:20,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-16 22:50:20,565 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:50:20,565 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:50:20,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 22:50:20,565 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:50:20,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:50:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1089763951, now seen corresponding path program 1 times [2025-03-16 22:50:20,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:50:20,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015485878] [2025-03-16 22:50:20,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:50:20,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:50:20,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-16 22:50:20,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-16 22:50:20,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:50:20,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:50:20,866 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 22:50:20,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:50:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015485878] [2025-03-16 22:50:20,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015485878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:50:20,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:50:20,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 22:50:20,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235176872] [2025-03-16 22:50:20,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:50:20,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 22:50:20,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:50:20,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 22:50:20,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 22:50:20,867 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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 22:50:20,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:50:20,969 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2025-03-16 22:50:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 22:50:20,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2025-03-16 22:50:20,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:50:20,970 INFO L225 Difference]: With dead ends: 75 [2025-03-16 22:50:20,970 INFO L226 Difference]: Without dead ends: 42 [2025-03-16 22:50:20,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-16 22:50:20,971 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 51 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:50:20,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 125 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:50:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-03-16 22:50:20,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2025-03-16 22:50:20,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.4) internal successors, (56), 40 states have internal predecessors, (56), 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 22:50:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 56 transitions. [2025-03-16 22:50:20,973 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 56 transitions. Word has length 18 [2025-03-16 22:50:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:50:20,973 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 56 transitions. [2025-03-16 22:50:20,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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 22:50:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions. [2025-03-16 22:50:20,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-16 22:50:20,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:50:20,974 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:50:20,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 22:50:20,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:50:20,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:50:20,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1311306623, now seen corresponding path program 1 times [2025-03-16 22:50:20,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:50:20,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415477993] [2025-03-16 22:50:20,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:50:20,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:50:20,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-16 22:50:20,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-16 22:50:20,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:50:20,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:50:21,240 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 22:50:21,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 22:50:21,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415477993] [2025-03-16 22:50:21,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415477993] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:50:21,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:50:21,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 22:50:21,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536795867] [2025-03-16 22:50:21,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:50:21,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 22:50:21,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 22:50:21,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 22:50:21,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-16 22:50:21,241 INFO L87 Difference]: Start difference. First operand 41 states and 56 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 22:50:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:50:21,350 INFO L93 Difference]: Finished difference Result 81 states and 111 transitions. [2025-03-16 22:50:21,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 22:50:21,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2025-03-16 22:50:21,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:50:21,351 INFO L225 Difference]: With dead ends: 81 [2025-03-16 22:50:21,351 INFO L226 Difference]: Without dead ends: 45 [2025-03-16 22:50:21,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-16 22:50:21,352 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 51 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:50:21,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 163 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:50:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-16 22:50:21,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2025-03-16 22:50:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.4) internal successors, (56), 40 states have internal predecessors, (56), 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 22:50:21,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 56 transitions. [2025-03-16 22:50:21,355 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 56 transitions. Word has length 19 [2025-03-16 22:50:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:50:21,355 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 56 transitions. [2025-03-16 22:50:21,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 22:50:21,355 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions. [2025-03-16 22:50:21,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-16 22:50:21,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:50:21,360 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 22:50:21,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 22:50:21,360 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:50:21,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:50:21,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1878262141, now seen corresponding path program 1 times [2025-03-16 22:50:21,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 22:50:21,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120074312] [2025-03-16 22:50:21,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:50:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 22:50:21,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-16 22:50:21,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-16 22:50:21,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:50:21,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 22:50:21,384 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-16 22:50:21,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-16 22:50:21,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-16 22:50:21,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:50:21,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 22:50:21,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-16 22:50:21,431 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-16 22:50:21,432 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 22:50:21,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 22:50:21,435 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-16 22:50:21,451 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-16 22:50:21,459 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 22:50:21,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 10:50:21 BoogieIcfgContainer [2025-03-16 22:50:21,463 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 22:50:21,465 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 22:50:21,465 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 22:50:21,465 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 22:50:21,466 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:50:19" (3/4) ... [2025-03-16 22:50:21,468 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-16 22:50:21,468 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 22:50:21,469 INFO L158 Benchmark]: Toolchain (without parser) took 2325.70ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 76.0MB in the end (delta: 29.5MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2025-03-16 22:50:21,469 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:50:21,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.53ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 92.7MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-16 22:50:21,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.16ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 88.6MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:50:21,469 INFO L158 Benchmark]: Boogie Preprocessor took 28.28ms. Allocated memory is still 142.6MB. Free memory was 88.6MB in the beginning and 86.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:50:21,469 INFO L158 Benchmark]: IcfgBuilder took 379.84ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 62.4MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-16 22:50:21,470 INFO L158 Benchmark]: TraceAbstraction took 1638.51ms. Allocated memory is still 142.6MB. Free memory was 61.4MB in the beginning and 76.1MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:50:21,470 INFO L158 Benchmark]: Witness Printer took 2.98ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 76.0MB in the end (delta: 37.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:50:21,470 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.53ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 92.7MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.16ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 88.6MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.28ms. Allocated memory is still 142.6MB. Free memory was 88.6MB in the beginning and 86.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 379.84ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 62.4MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1638.51ms. Allocated memory is still 142.6MB. Free memory was 61.4MB in the beginning and 76.1MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.98ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 76.0MB in the end (delta: 37.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 106. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 5); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (5 - 1); [L32] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 12); [L33] const SORT_5 msb_SORT_5 = (SORT_5)1 << (12 - 1); [L35] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 3); [L36] const SORT_7 msb_SORT_7 = (SORT_7)1 << (3 - 1); [L38] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 2); [L39] const SORT_14 msb_SORT_14 = (SORT_14)1 << (2 - 1); [L41] const SORT_7 var_8 = 0; [L42] const SORT_1 var_12 = 0; [L43] const SORT_14 var_16 = 0; [L44] const SORT_1 var_21 = 1; [L45] const SORT_7 var_50 = 1; [L46] const SORT_7 var_52 = 4; [L48] SORT_1 input_2; [L49] SORT_3 input_4; [L50] SORT_5 input_6; [L51] SORT_3 input_25; [L52] SORT_3 input_27; [L53] SORT_3 input_29; [L54] SORT_1 input_31; [L55] SORT_5 input_33; [L56] SORT_3 input_35; [L57] SORT_3 input_37; [L58] SORT_3 input_39; [L59] SORT_3 input_41; [L60] SORT_3 input_43; [L61] SORT_3 input_45; [L62] SORT_3 input_47; [L64] EXPR __VERIFIER_nondet_uchar() & mask_SORT_7 VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, var_12=0, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L64] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L66] SORT_7 init_10_arg_1 = var_8; [L67] state_9 = init_10_arg_1 VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, state_9=0, var_12=0, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L70] input_2 = __VERIFIER_nondet_uchar() [L71] input_4 = __VERIFIER_nondet_uchar() [L72] input_6 = __VERIFIER_nondet_ushort() [L73] input_25 = __VERIFIER_nondet_uchar() [L74] input_27 = __VERIFIER_nondet_uchar() [L75] input_29 = __VERIFIER_nondet_uchar() [L76] input_31 = __VERIFIER_nondet_uchar() [L77] input_33 = __VERIFIER_nondet_ushort() [L78] input_35 = __VERIFIER_nondet_uchar() [L79] input_37 = __VERIFIER_nondet_uchar() [L80] input_39 = __VERIFIER_nondet_uchar() [L81] input_41 = __VERIFIER_nondet_uchar() [L82] input_43 = __VERIFIER_nondet_uchar() [L83] input_45 = __VERIFIER_nondet_uchar() [L84] input_47 = __VERIFIER_nondet_uchar() [L87] SORT_7 var_11_arg_0 = state_9; [L88] SORT_1 var_11 = var_11_arg_0 >> 2; VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, state_9=0, var_11=0, var_12=0, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L89] EXPR var_11 & mask_SORT_1 VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, state_9=0, var_12=0, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L89] var_11 = var_11 & mask_SORT_1 [L90] SORT_1 var_13_arg_0 = var_11; [L91] SORT_1 var_13_arg_1 = var_12; [L92] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L93] SORT_7 var_15_arg_0 = state_9; [L94] SORT_14 var_15 = var_15_arg_0 >> 0; VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, state_9=0, var_12=0, var_13=1, var_15=0, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L95] EXPR var_15 & mask_SORT_14 VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, state_9=0, var_12=0, var_13=1, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L95] var_15 = var_15 & mask_SORT_14 [L96] SORT_14 var_17_arg_0 = var_15; [L97] SORT_14 var_17_arg_1 = var_16; [L98] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L99] SORT_1 var_18_arg_0 = var_13; [L100] SORT_1 var_18_arg_1 = var_17; VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, state_9=0, var_12=0, var_16=0, var_18_arg_0=1, var_18_arg_1=1, var_21=1, var_50=1, var_52=4, var_8=0] [L101] EXPR var_18_arg_0 | var_18_arg_1 VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, state_9=0, var_12=0, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L101] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L102] SORT_1 var_22_arg_0 = var_18; [L103] SORT_1 var_22 = ~var_22_arg_0; [L104] SORT_1 var_23_arg_0 = var_21; [L105] SORT_1 var_23_arg_1 = var_22; VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, state_9=0, var_12=0, var_16=0, var_21=1, var_23_arg_0=1, var_23_arg_1=-2, var_50=1, var_52=4, var_8=0] [L106] EXPR var_23_arg_0 & var_23_arg_1 VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, state_9=0, var_12=0, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L106] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L107] EXPR var_23 & mask_SORT_1 VAL [mask_SORT_14=3, mask_SORT_1=1, mask_SORT_7=7, state_9=0, var_12=0, var_16=0, var_21=1, var_50=1, var_52=4, var_8=0] [L107] var_23 = var_23 & mask_SORT_1 [L108] SORT_1 bad_24_arg_0 = var_23; [L109] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 51 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102 mSDsluCounter, 509 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 362 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 217 IncrementalHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 147 mSDtfsCounter, 217 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-16 22:50:21,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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.vis_arrays_vsaR_p04.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 a85f457a181079a0b5789d13788d6c7347ae80776212b7f747148ec13e9b6cf1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 22:50:23,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 22:50:23,405 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-03-16 22:50:23,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 22:50:23,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 22:50:23,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 22:50:23,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 22:50:23,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 22:50:23,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 22:50:23,444 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 22:50:23,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 22:50:23,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 22:50:23,445 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 22:50:23,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 22:50:23,445 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 22:50:23,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 22:50:23,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 22:50:23,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 22:50:23,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 22:50:23,446 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:50:23,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 22:50:23,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 22:50:23,447 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 22:50:23,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 22:50:23,447 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-16 22:50:23,448 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-16 22:50:23,448 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 22:50:23,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 22:50:23,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 22:50:23,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 22:50:23,448 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 -> a85f457a181079a0b5789d13788d6c7347ae80776212b7f747148ec13e9b6cf1 [2025-03-16 22:50:23,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 22:50:23,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 22:50:23,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 22:50:23,703 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 22:50:23,703 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 22:50:23,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2025-03-16 22:50:24,896 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c25bc7fb/f0e012d62474434bb22606e666627c79/FLAG9bc227a91 [2025-03-16 22:50:25,075 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 22:50:25,076 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p04.c [2025-03-16 22:50:25,084 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c25bc7fb/f0e012d62474434bb22606e666627c79/FLAG9bc227a91 [2025-03-16 22:50:25,099 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c25bc7fb/f0e012d62474434bb22606e666627c79 [2025-03-16 22:50:25,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 22:50:25,102 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 22:50:25,103 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 22:50:25,103 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 22:50:25,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 22:50:25,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676f5063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25, skipping insertion in model container [2025-03-16 22:50:25,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,125 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 22:50:25,233 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.vis_arrays_vsaR_p04.c[1259,1272] [2025-03-16 22:50:25,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:50:25,273 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 22:50:25,280 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.vis_arrays_vsaR_p04.c[1259,1272] [2025-03-16 22:50:25,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 22:50:25,312 INFO L204 MainTranslator]: Completed translation [2025-03-16 22:50:25,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25 WrapperNode [2025-03-16 22:50:25,313 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 22:50:25,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 22:50:25,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 22:50:25,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 22:50:25,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,343 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 135 [2025-03-16 22:50:25,345 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 22:50:25,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 22:50:25,345 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 22:50:25,345 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 22:50:25,352 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,354 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,364 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 22:50:25,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,372 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,380 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 22:50:25,384 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 22:50:25,384 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 22:50:25,384 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 22:50:25,385 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (1/1) ... [2025-03-16 22:50:25,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 22:50:25,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:50:25,412 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 22:50:25,418 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 22:50:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 22:50:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-16 22:50:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 22:50:25,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 22:50:25,505 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 22:50:25,506 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 22:50:25,640 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2025-03-16 22:50:25,640 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 22:50:25,646 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 22:50:25,647 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 22:50:25,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:50:25 BoogieIcfgContainer [2025-03-16 22:50:25,647 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 22:50:25,648 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 22:50:25,648 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 22:50:25,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 22:50:25,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 10:50:25" (1/3) ... [2025-03-16 22:50:25,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c06fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:50:25, skipping insertion in model container [2025-03-16 22:50:25,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 10:50:25" (2/3) ... [2025-03-16 22:50:25,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c06fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 10:50:25, skipping insertion in model container [2025-03-16 22:50:25,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:50:25" (3/3) ... [2025-03-16 22:50:25,655 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p04.c [2025-03-16 22:50:25,665 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 22:50:25,666 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_arrays_vsaR_p04.c that has 1 procedures, 8 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 22:50:25,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 22:50:25,702 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;@3c8a6baa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 22:50:25,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 22:50:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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 22:50:25,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-16 22:50:25,708 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:50:25,709 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-16 22:50:25,710 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:50:25,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:50:25,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1137951, now seen corresponding path program 1 times [2025-03-16 22:50:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 22:50:25,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730177807] [2025-03-16 22:50:25,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:50:25,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:50:25,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:50:25,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:50:25,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 22:50:25,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-16 22:50:25,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-16 22:50:25,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:50:25,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:50:25,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-16 22:50:25,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:50:25,994 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 22:50:25,994 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 22:50:25,994 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 22:50:25,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730177807] [2025-03-16 22:50:25,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730177807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 22:50:25,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 22:50:25,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 22:50:25,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724441444] [2025-03-16 22:50:25,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 22:50:26,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 22:50:26,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 22:50:26,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 22:50:26,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 22:50:26,018 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 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 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 22:50:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:50:26,063 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2025-03-16 22:50:26,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 22:50:26,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2025-03-16 22:50:26,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:50:26,069 INFO L225 Difference]: With dead ends: 16 [2025-03-16 22:50:26,069 INFO L226 Difference]: Without dead ends: 9 [2025-03-16 22:50:26,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 22:50:26,074 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 22:50:26,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 22:50:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-03-16 22:50:26,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2025-03-16 22:50:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 22:50:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2025-03-16 22:50:26,098 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2025-03-16 22:50:26,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:50:26,099 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2025-03-16 22:50:26,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 22:50:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2025-03-16 22:50:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-16 22:50:26,099 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:50:26,099 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2025-03-16 22:50:26,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 22:50:26,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:50:26,305 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:50:26,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:50:26,305 INFO L85 PathProgramCache]: Analyzing trace with hash -458170295, now seen corresponding path program 1 times [2025-03-16 22:50:26,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 22:50:26,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870993781] [2025-03-16 22:50:26,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 22:50:26,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:50:26,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:50:26,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:50:26,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 22:50:26,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 22:50:26,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 22:50:26,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 22:50:26,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:50:26,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-16 22:50:26,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:50:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:50:26,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:50:31,631 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_9~0#1|))) (let ((.cse5 (= .cse6 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_52~0#1|)))) (let ((.cse2 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_8~0#1|)))) (.cse1 (not .cse5)) (.cse3 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_12~0#1|)) (.cse4 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse6 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_50~0#1|))))))) (.cse0 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|))) (and (or (forall ((|v_ULTIMATE.start_main_~var_18_arg_1~0#1_10| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_23_arg_0~0#1_10| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_23_arg_0~0#1_10|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_18_arg_1~0#1_10|)))))))))))))) (and (or .cse1 (forall ((|ULTIMATE.start_main_~mask_SORT_7~0#1| (_ BitVec 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_7~0#1|) .cse2))) (_ bv2 32))))))) .cse3)))) (or (forall ((|ULTIMATE.start_main_~mask_SORT_7~0#1| (_ BitVec 8))) (not (= .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_7~0#1|) .cse4))) (_ bv2 32)))))))))) .cse5))) (or (and (or (forall ((|ULTIMATE.start_main_~mask_SORT_7~0#1| (_ BitVec 8))) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_7~0#1|) .cse2))) (_ bv2 32))))))) .cse3)) .cse1) (or (forall ((|ULTIMATE.start_main_~mask_SORT_7~0#1| (_ BitVec 8))) (= .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvashr ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_7~0#1|) .cse4))) (_ bv2 32))))))))) .cse5)) (forall ((|v_ULTIMATE.start_main_~var_18_arg_1~0#1_10| (_ BitVec 8)) (|v_ULTIMATE.start_main_~var_23_arg_0~0#1_10| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse0 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_23_arg_0~0#1_10|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_18_arg_1~0#1_10|)))))))))))) (_ bv0 8)))))))) is different from false [2025-03-16 22:50:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2025-03-16 22:50:32,193 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 22:50:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870993781] [2025-03-16 22:50:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870993781] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:50:32,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-16 22:50:32,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2025-03-16 22:50:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607046881] [2025-03-16 22:50:32,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-16 22:50:32,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 22:50:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 22:50:32,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 22:50:32,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=49, Unknown=1, NotChecked=14, Total=90 [2025-03-16 22:50:32,195 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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 22:50:32,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:50:32,765 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2025-03-16 22:50:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 22:50:32,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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 7 [2025-03-16 22:50:32,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:50:32,766 INFO L225 Difference]: With dead ends: 14 [2025-03-16 22:50:32,766 INFO L226 Difference]: Without dead ends: 12 [2025-03-16 22:50:32,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=50, Invalid=85, Unknown=1, NotChecked=20, Total=156 [2025-03-16 22:50:32,767 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 22:50:32,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 7 Unchecked, 0.2s Time] [2025-03-16 22:50:32,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-03-16 22:50:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2025-03-16 22:50:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 22:50:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2025-03-16 22:50:32,774 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2025-03-16 22:50:32,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:50:32,774 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2025-03-16 22:50:32,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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 22:50:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2025-03-16 22:50:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 22:50:32,774 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:50:32,774 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2025-03-16 22:50:32,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 22:50:32,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:50:32,975 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:50:32,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:50:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash 55678175, now seen corresponding path program 2 times [2025-03-16 22:50:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 22:50:32,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678238791] [2025-03-16 22:50:32,976 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 22:50:32,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:50:32,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:50:32,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:50:32,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 22:50:33,034 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 2 equivalence classes. [2025-03-16 22:50:33,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 22:50:33,049 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 22:50:33,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:50:33,050 WARN L254 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-03-16 22:50:33,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:50:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:50:34,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:50:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 22:50:42,562 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 22:50:42,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678238791] [2025-03-16 22:50:42,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678238791] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:50:42,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-16 22:50:42,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2025-03-16 22:50:42,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581599814] [2025-03-16 22:50:42,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-16 22:50:42,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-16 22:50:42,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 22:50:42,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-16 22:50:42,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2025-03-16 22:50:42,563 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 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 22:50:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:50:47,349 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2025-03-16 22:50:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 22:50:47,350 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 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 10 [2025-03-16 22:50:47,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:50:47,351 INFO L225 Difference]: With dead ends: 23 [2025-03-16 22:50:47,351 INFO L226 Difference]: Without dead ends: 21 [2025-03-16 22:50:47,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2025-03-16 22:50:47,353 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-16 22:50:47,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 21 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-16 22:50:47,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-16 22:50:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2025-03-16 22:50:47,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 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 22:50:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2025-03-16 22:50:47,357 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2025-03-16 22:50:47,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:50:47,357 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2025-03-16 22:50:47,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 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 22:50:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2025-03-16 22:50:47,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-16 22:50:47,358 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 22:50:47,358 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1] [2025-03-16 22:50:47,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 22:50:47,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:50:47,558 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 22:50:47,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 22:50:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash -706015031, now seen corresponding path program 3 times [2025-03-16 22:50:47,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 22:50:47,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671163455] [2025-03-16 22:50:47,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 22:50:47,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:50:47,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 22:50:47,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 22:50:47,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 22:50:47,625 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 6 equivalence classes. [2025-03-16 22:50:47,639 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 10 of 19 statements. [2025-03-16 22:50:47,639 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-16 22:50:47,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 22:50:47,641 WARN L254 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-03-16 22:50:47,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 22:50:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 22:50:51,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 22:51:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 22:51:18,706 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 22:51:18,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671163455] [2025-03-16 22:51:18,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671163455] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 22:51:18,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-16 22:51:18,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2025-03-16 22:51:18,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228808930] [2025-03-16 22:51:18,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-16 22:51:18,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-16 22:51:18,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 22:51:18,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-16 22:51:18,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2025-03-16 22:51:18,708 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 states have internal predecessors, (25), 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 22:51:19,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 22:51:19,425 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2025-03-16 22:51:19,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 22:51:19,425 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 states have internal predecessors, (25), 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 19 [2025-03-16 22:51:19,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 22:51:19,426 INFO L225 Difference]: With dead ends: 20 [2025-03-16 22:51:19,426 INFO L226 Difference]: Without dead ends: 0 [2025-03-16 22:51:19,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2025-03-16 22:51:19,426 INFO L435 NwaCegarLoop]: 1 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 22:51:19,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 22:51:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-16 22:51:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-16 22:51:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 22:51:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-16 22:51:19,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2025-03-16 22:51:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 22:51:19,427 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-16 22:51:19,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 states have internal predecessors, (25), 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 22:51:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-16 22:51:19,427 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-16 22:51:19,429 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 22:51:19,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 22:51:19,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 22:51:19,633 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1] [2025-03-16 22:51:19,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-16 22:51:20,431 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 22:51:20,438 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression [2025-03-16 22:51:20,438 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression [2025-03-16 22:51:20,440 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2025-03-16 22:51:20,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 10:51:20 BoogieIcfgContainer [2025-03-16 22:51:20,442 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 22:51:20,443 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 22:51:20,443 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 22:51:20,443 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 22:51:20,443 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 10:50:25" (3/4) ... [2025-03-16 22:51:20,445 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-16 22:51:20,451 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-16 22:51:20,452 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-16 22:51:20,452 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-16 22:51:20,452 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-16 22:51:20,514 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-16 22:51:20,514 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-16 22:51:20,514 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 22:51:20,515 INFO L158 Benchmark]: Toolchain (without parser) took 55412.33ms. Allocated memory was 117.4MB in the beginning and 251.7MB in the end (delta: 134.2MB). Free memory was 92.9MB in the beginning and 86.3MB in the end (delta: 6.7MB). Peak memory consumption was 141.5MB. Max. memory is 16.1GB. [2025-03-16 22:51:20,515 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory was 63.7MB in the beginning and 63.6MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:51:20,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.77ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 79.1MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 22:51:20,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.41ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 77.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:51:20,515 INFO L158 Benchmark]: Boogie Preprocessor took 37.99ms. Allocated memory is still 117.4MB. Free memory was 77.5MB in the beginning and 75.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 22:51:20,516 INFO L158 Benchmark]: IcfgBuilder took 263.30ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 61.7MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-16 22:51:20,516 INFO L158 Benchmark]: TraceAbstraction took 54793.78ms. Allocated memory was 117.4MB in the beginning and 251.7MB in the end (delta: 134.2MB). Free memory was 61.0MB in the beginning and 91.7MB in the end (delta: -30.7MB). Peak memory consumption was 108.0MB. Max. memory is 16.1GB. [2025-03-16 22:51:20,516 INFO L158 Benchmark]: Witness Printer took 71.48ms. Allocated memory is still 251.7MB. Free memory was 91.7MB in the beginning and 86.3MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 22:51:20,519 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 83.9MB. Free memory was 63.7MB in the beginning and 63.6MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.77ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 79.1MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.41ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 77.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.99ms. Allocated memory is still 117.4MB. Free memory was 77.5MB in the beginning and 75.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 263.30ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 61.7MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 54793.78ms. Allocated memory was 117.4MB in the beginning and 251.7MB in the end (delta: 134.2MB). Free memory was 61.0MB in the beginning and 91.7MB in the end (delta: -30.7MB). Peak memory consumption was 108.0MB. Max. memory is 16.1GB. * Witness Printer took 71.48ms. Allocated memory is still 251.7MB. Free memory was 91.7MB in the beginning and 86.3MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: BitVectorAccessExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 9 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.9s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 133 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 10 mSDtfsCounter, 133 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 22.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 46.6s InterpolantComputationTime, 40 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 69 ConstructedInterpolants, 32 QuantifiedInterpolants, 38338 SizeOfPredicates, 34 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 33/98 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 68]: Location Invariant Derived location invariant: (((((((((1 == var_50) && (4 == var_52)) && (7 == mask_SORT_7)) && (0 == var_8)) && (3 == mask_SORT_14)) && (1 == mask_SORT_1)) && (0 == var_16)) && (0 == var_12)) && (1 == var_21)) RESULT: Ultimate proved your program to be correct! [2025-03-16 22:51:20,727 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2025-03-16 22:51:20,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE