./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal12.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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.cal12.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 7631e780ab762af7049f4f894b74af417e60ccfcde47865ef4ca17d480eda758 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 16:51:48,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 16:51:48,584 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-03 16:51:48,592 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 16:51:48,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 16:51:48,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 16:51:48,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 16:51:48,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 16:51:48,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 16:51:48,614 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 16:51:48,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 16:51:48,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 16:51:48,615 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 16:51:48,615 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 16:51:48,615 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 16:51:48,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 16:51:48,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 16:51:48,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 16:51:48,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 16:51:48,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 16:51:48,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 16:51:48,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 16:51:48,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 16:51:48,616 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 16:51:48,616 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 16:51:48,616 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 16:51:48,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 16:51:48,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 16:51:48,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 16:51:48,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 16:51:48,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 16:51:48,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 16:51:48,617 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 16:51:48,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 16:51:48,617 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 16:51:48,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 16:51:48,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 16:51:48,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 16:51:48,618 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 16:51:48,618 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 16:51:48,618 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 -> 7631e780ab762af7049f4f894b74af417e60ccfcde47865ef4ca17d480eda758 [2025-03-03 16:51:48,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 16:51:48,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 16:51:48,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 16:51:48,840 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 16:51:48,840 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 16:51:48,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal12.c [2025-03-03 16:51:49,992 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8ff163ae/6a5832cc61ed44fd87bc2f03e5d83539/FLAG8b4648c5c [2025-03-03 16:51:50,232 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 16:51:50,233 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal12.c [2025-03-03 16:51:50,239 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8ff163ae/6a5832cc61ed44fd87bc2f03e5d83539/FLAG8b4648c5c [2025-03-03 16:51:50,579 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8ff163ae/6a5832cc61ed44fd87bc2f03e5d83539 [2025-03-03 16:51:50,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 16:51:50,582 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 16:51:50,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 16:51:50,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 16:51:50,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 16:51:50,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137ce0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50, skipping insertion in model container [2025-03-03 16:51:50,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 16:51:50,687 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.cal12.c[1245,1258] [2025-03-03 16:51:50,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 16:51:50,740 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 16:51:50,748 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.cal12.c[1245,1258] [2025-03-03 16:51:50,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 16:51:50,791 INFO L204 MainTranslator]: Completed translation [2025-03-03 16:51:50,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50 WrapperNode [2025-03-03 16:51:50,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 16:51:50,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 16:51:50,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 16:51:50,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 16:51:50,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,833 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 303 [2025-03-03 16:51:50,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 16:51:50,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 16:51:50,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 16:51:50,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 16:51:50,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,852 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,867 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-03-03 16:51:50,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,875 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 16:51:50,888 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 16:51:50,888 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 16:51:50,888 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 16:51:50,889 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (1/1) ... [2025-03-03 16:51:50,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 16:51:50,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:51:50,913 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) [2025-03-03 16:51:50,915 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 [2025-03-03 16:51:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 16:51:50,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 16:51:50,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 16:51:50,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 16:51:50,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 16:51:50,997 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 16:51:50,998 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 16:51:51,412 INFO L? ?]: Removed 145 outVars from TransFormulas that were not future-live. [2025-03-03 16:51:51,412 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 16:51:51,432 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 16:51:51,432 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 16:51:51,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 04:51:51 BoogieIcfgContainer [2025-03-03 16:51:51,432 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 16:51:51,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 16:51:51,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 16:51:51,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 16:51:51,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 04:51:50" (1/3) ... [2025-03-03 16:51:51,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575ed6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 04:51:51, skipping insertion in model container [2025-03-03 16:51:51,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:50" (2/3) ... [2025-03-03 16:51:51,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575ed6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 04:51:51, skipping insertion in model container [2025-03-03 16:51:51,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 04:51:51" (3/3) ... [2025-03-03 16:51:51,439 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal12.c [2025-03-03 16:51:51,448 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 16:51:51,449 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.cal12.c that has 1 procedures, 74 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 16:51:51,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 16:51:51,497 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;@1ea100f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 16:51:51,497 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 16:51:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 73 states have internal predecessors, (107), 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) [2025-03-03 16:51:51,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-03 16:51:51,504 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:51:51,504 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:51:51,505 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:51:51,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:51:51,509 INFO L85 PathProgramCache]: Analyzing trace with hash -737285096, now seen corresponding path program 1 times [2025-03-03 16:51:51,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:51:51,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783044697] [2025-03-03 16:51:51,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:51:51,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:51:51,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-03 16:51:51,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-03 16:51:51,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:51:51,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:51:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:51:52,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:51:52,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783044697] [2025-03-03 16:51:52,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783044697] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:51:52,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:51:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:51:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805981450] [2025-03-03 16:51:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:51:52,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:51:52,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:51:52,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:51:52,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:51:52,023 INFO L87 Difference]: Start difference. First operand has 74 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 73 states have internal predecessors, (107), 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 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2025-03-03 16:51:52,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:51:52,093 INFO L93 Difference]: Finished difference Result 129 states and 189 transitions. [2025-03-03 16:51:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:51:52,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2025-03-03 16:51:52,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:51:52,099 INFO L225 Difference]: With dead ends: 129 [2025-03-03 16:51:52,100 INFO L226 Difference]: Without dead ends: 73 [2025-03-03 16:51:52,102 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 [2025-03-03 16:51:52,104 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:51:52,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:51:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-03-03 16:51:52,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2025-03-03 16:51:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4583333333333333) internal successors, (105), 72 states have internal predecessors, (105), 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) [2025-03-03 16:51:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 105 transitions. [2025-03-03 16:51:52,131 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 105 transitions. Word has length 27 [2025-03-03 16:51:52,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:51:52,131 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 105 transitions. [2025-03-03 16:51:52,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2025-03-03 16:51:52,132 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 105 transitions. [2025-03-03 16:51:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-03 16:51:52,132 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:51:52,132 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:51:52,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 16:51:52,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:51:52,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:51:52,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1376322316, now seen corresponding path program 1 times [2025-03-03 16:51:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:51:52,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714241561] [2025-03-03 16:51:52,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:51:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:51:52,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 16:51:52,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 16:51:52,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:51:52,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:51:52,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:51:52,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:51:52,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714241561] [2025-03-03 16:51:52,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714241561] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:51:52,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:51:52,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:51:52,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737258332] [2025-03-03 16:51:52,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:51:52,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:51:52,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:51:52,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:51:52,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:51:52,288 INFO L87 Difference]: Start difference. First operand 73 states and 105 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2025-03-03 16:51:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:51:52,355 INFO L93 Difference]: Finished difference Result 130 states and 187 transitions. [2025-03-03 16:51:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:51:52,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2025-03-03 16:51:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:51:52,356 INFO L225 Difference]: With dead ends: 130 [2025-03-03 16:51:52,356 INFO L226 Difference]: Without dead ends: 75 [2025-03-03 16:51:52,357 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 [2025-03-03 16:51:52,357 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:51:52,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 247 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:51:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-03-03 16:51:52,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2025-03-03 16:51:52,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.445945945945946) internal successors, (107), 74 states have internal predecessors, (107), 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) [2025-03-03 16:51:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 107 transitions. [2025-03-03 16:51:52,361 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 107 transitions. Word has length 28 [2025-03-03 16:51:52,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:51:52,361 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 107 transitions. [2025-03-03 16:51:52,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2025-03-03 16:51:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 107 transitions. [2025-03-03 16:51:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-03-03 16:51:52,362 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:51:52,362 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:51:52,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 16:51:52,362 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:51:52,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:51:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2079776877, now seen corresponding path program 1 times [2025-03-03 16:51:52,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:51:52,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150011510] [2025-03-03 16:51:52,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:51:52,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:51:52,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-03 16:51:52,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-03 16:51:52,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:51:52,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:51:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:51:52,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:51:52,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150011510] [2025-03-03 16:51:52,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150011510] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:51:52,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:51:52,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 16:51:52,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655409781] [2025-03-03 16:51:52,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:51:52,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 16:51:52,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:51:52,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 16:51:52,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 16:51:52,639 INFO L87 Difference]: Start difference. First operand 75 states and 107 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2025-03-03 16:51:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:51:52,756 INFO L93 Difference]: Finished difference Result 169 states and 239 transitions. [2025-03-03 16:51:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 16:51:52,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2025-03-03 16:51:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:51:52,758 INFO L225 Difference]: With dead ends: 169 [2025-03-03 16:51:52,758 INFO L226 Difference]: Without dead ends: 112 [2025-03-03 16:51:52,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-03 16:51:52,760 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 191 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:51:52,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 309 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:51:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-03 16:51:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2025-03-03 16:51:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4456521739130435) internal successors, (133), 92 states have internal predecessors, (133), 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) [2025-03-03 16:51:52,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2025-03-03 16:51:52,766 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 29 [2025-03-03 16:51:52,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:51:52,766 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2025-03-03 16:51:52,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2025-03-03 16:51:52,766 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2025-03-03 16:51:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-03 16:51:52,767 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:51:52,767 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:51:52,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 16:51:52,767 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:51:52,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:51:52,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1839788793, now seen corresponding path program 1 times [2025-03-03 16:51:52,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:51:52,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258343529] [2025-03-03 16:51:52,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:51:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:51:52,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-03 16:51:52,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-03 16:51:52,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:51:52,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:51:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:51:52,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:51:52,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258343529] [2025-03-03 16:51:52,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258343529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:51:52,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:51:52,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 16:51:52,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043878590] [2025-03-03 16:51:52,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:51:52,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 16:51:52,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:51:52,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 16:51:52,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 16:51:52,992 INFO L87 Difference]: Start difference. First operand 93 states and 133 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2025-03-03 16:51:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:51:53,146 INFO L93 Difference]: Finished difference Result 171 states and 241 transitions. [2025-03-03 16:51:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 16:51:53,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 30 [2025-03-03 16:51:53,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:51:53,147 INFO L225 Difference]: With dead ends: 171 [2025-03-03 16:51:53,148 INFO L226 Difference]: Without dead ends: 114 [2025-03-03 16:51:53,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-03-03 16:51:53,148 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 194 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:51:53,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 452 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:51:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-03-03 16:51:53,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 96. [2025-03-03 16:51:53,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.4421052631578948) internal successors, (137), 95 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 16:51:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 137 transitions. [2025-03-03 16:51:53,157 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 137 transitions. Word has length 30 [2025-03-03 16:51:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:51:53,157 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 137 transitions. [2025-03-03 16:51:53,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2025-03-03 16:51:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 137 transitions. [2025-03-03 16:51:53,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-03 16:51:53,159 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:51:53,159 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:51:53,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 16:51:53,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:51:53,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:51:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash -56975805, now seen corresponding path program 1 times [2025-03-03 16:51:53,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:51:53,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035450905] [2025-03-03 16:51:53,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:51:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:51:53,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-03 16:51:53,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-03 16:51:53,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:51:53,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:51:53,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:51:53,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 16:51:53,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035450905] [2025-03-03 16:51:53,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035450905] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:51:53,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:51:53,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-03 16:51:53,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313893516] [2025-03-03 16:51:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:51:53,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 16:51:53,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 16:51:53,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 16:51:53,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-03 16:51:53,529 INFO L87 Difference]: Start difference. First operand 96 states and 137 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2025-03-03 16:51:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:51:53,751 INFO L93 Difference]: Finished difference Result 171 states and 240 transitions. [2025-03-03 16:51:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 16:51:53,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2025-03-03 16:51:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:51:53,753 INFO L225 Difference]: With dead ends: 171 [2025-03-03 16:51:53,753 INFO L226 Difference]: Without dead ends: 114 [2025-03-03 16:51:53,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-03-03 16:51:53,754 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 189 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:51:53,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 438 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:51:53,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-03-03 16:51:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 100. [2025-03-03 16:51:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.4343434343434343) internal successors, (142), 99 states have internal predecessors, (142), 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) [2025-03-03 16:51:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 142 transitions. [2025-03-03 16:51:53,765 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 142 transitions. Word has length 31 [2025-03-03 16:51:53,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:51:53,766 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 142 transitions. [2025-03-03 16:51:53,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2025-03-03 16:51:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 142 transitions. [2025-03-03 16:51:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-03 16:51:53,768 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:51:53,768 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 16:51:53,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 16:51:53,769 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:51:53,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:51:53,769 INFO L85 PathProgramCache]: Analyzing trace with hash 450361518, now seen corresponding path program 1 times [2025-03-03 16:51:53,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 16:51:53,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669551418] [2025-03-03 16:51:53,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:51:53,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 16:51:53,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-03 16:51:53,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-03 16:51:53,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:51:53,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 16:51:53,810 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 16:51:53,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-03 16:51:53,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-03 16:51:53,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:51:53,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 16:51:53,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 16:51:53,847 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 16:51:53,848 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 16:51:53,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 16:51:53,852 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-03-03 16:51:53,867 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-03-03 16:51:53,872 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 16:51:53,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 04:51:53 BoogieIcfgContainer [2025-03-03 16:51:53,875 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 16:51:53,876 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 16:51:53,876 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 16:51:53,876 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 16:51:53,877 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 04:51:51" (3/4) ... [2025-03-03 16:51:53,879 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-03 16:51:53,879 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 16:51:53,880 INFO L158 Benchmark]: Toolchain (without parser) took 3298.19ms. Allocated memory was 167.8MB in the beginning and 377.5MB in the end (delta: 209.7MB). Free memory was 123.9MB in the beginning and 226.8MB in the end (delta: -102.9MB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. [2025-03-03 16:51:53,880 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 16:51:53,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.49ms. Allocated memory is still 167.8MB. Free memory was 123.9MB in the beginning and 109.3MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 16:51:53,881 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.79ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 103.0MB in the end (delta: 6.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 16:51:53,881 INFO L158 Benchmark]: Boogie Preprocessor took 51.59ms. Allocated memory is still 167.8MB. Free memory was 103.0MB in the beginning and 99.4MB in the end (delta: 3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 16:51:53,881 INFO L158 Benchmark]: IcfgBuilder took 544.54ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 56.7MB in the end (delta: 42.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-03 16:51:53,881 INFO L158 Benchmark]: TraceAbstraction took 2441.33ms. Allocated memory was 167.8MB in the beginning and 377.5MB in the end (delta: 209.7MB). Free memory was 56.7MB in the beginning and 228.4MB in the end (delta: -171.7MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2025-03-03 16:51:53,881 INFO L158 Benchmark]: Witness Printer took 3.56ms. Allocated memory is still 377.5MB. Free memory was 226.8MB in the beginning and 226.8MB in the end (delta: 33.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 16:51:53,882 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 116.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.49ms. Allocated memory is still 167.8MB. Free memory was 123.9MB in the beginning and 109.3MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.79ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 103.0MB in the end (delta: 6.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.59ms. Allocated memory is still 167.8MB. Free memory was 103.0MB in the beginning and 99.4MB in the end (delta: 3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 544.54ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 56.7MB in the end (delta: 42.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2441.33ms. Allocated memory was 167.8MB in the beginning and 377.5MB in the end (delta: 209.7MB). Free memory was 56.7MB in the beginning and 228.4MB in the end (delta: -171.7MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. * Witness Printer took 3.56ms. Allocated memory is still 377.5MB. Free memory was 226.8MB in the beginning and 226.8MB in the end (delta: 33.1kB). 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 bitwiseOr at line 92, overapproximation of bitwiseAnd at line 97. 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 2); [L30] const SORT_5 msb_SORT_5 = (SORT_5)1 << (2 - 1); [L32] const SORT_1 var_10 = 0; [L33] const SORT_5 var_14 = 0; [L34] const SORT_1 var_29 = 1; [L35] const SORT_5 var_39 = 1; [L37] SORT_1 input_2; [L38] SORT_1 input_3; [L39] SORT_1 input_4; [L40] SORT_5 input_6; [L41] SORT_1 input_7; [L42] SORT_5 input_8; [L43] SORT_5 input_9; [L45] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=3, var_10=0, var_14=0, var_29=1, var_39=1] [L45] SORT_1 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=3, var_10=0, var_14=0, var_29=1, var_39=1] [L46] SORT_5 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L47] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=3, var_10=0, var_14=0, var_29=1, var_39=1] [L47] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L48] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 VAL [mask_SORT_1=1, var_10=0, var_14=0, var_29=1, var_39=1] [L48] SORT_5 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L50] SORT_1 init_12_arg_1 = var_10; [L51] state_11 = init_12_arg_1 [L52] SORT_5 init_16_arg_1 = var_14; [L53] state_15 = init_16_arg_1 [L54] SORT_1 init_18_arg_1 = var_10; [L55] state_17 = init_18_arg_1 [L56] SORT_5 init_22_arg_1 = var_14; [L57] state_21 = init_22_arg_1 VAL [mask_SORT_1=1, state_11=0, state_15=0, state_17=0, state_21=0, var_10=0, var_14=0, var_29=1, var_39=1] [L60] input_2 = __VERIFIER_nondet_uchar() [L61] EXPR input_2 & mask_SORT_1 VAL [mask_SORT_1=1, state_11=0, state_15=0, state_17=0, state_21=0, var_10=0, var_14=0, var_29=1, var_39=1] [L61] input_2 = input_2 & mask_SORT_1 [L62] input_3 = __VERIFIER_nondet_uchar() [L63] EXPR input_3 & mask_SORT_1 VAL [input_2=0, mask_SORT_1=1, state_11=0, state_15=0, state_17=0, state_21=0, var_10=0, var_14=0, var_29=1, var_39=1] [L63] input_3 = input_3 & mask_SORT_1 [L64] input_4 = __VERIFIER_nondet_uchar() [L65] input_6 = __VERIFIER_nondet_uchar() [L66] input_7 = __VERIFIER_nondet_uchar() [L67] input_8 = __VERIFIER_nondet_uchar() [L68] input_9 = __VERIFIER_nondet_uchar() [L71] SORT_1 var_13_arg_0 = state_11; [L72] SORT_1 var_13 = ~var_13_arg_0; [L73] SORT_1 var_19_arg_0 = state_17; [L74] SORT_5 var_19_arg_1 = state_15; [L75] SORT_5 var_19_arg_2 = input_6; [L76] SORT_5 var_19 = var_19_arg_0 ? var_19_arg_1 : var_19_arg_2; [L77] SORT_5 var_20_arg_0 = var_19; [L78] SORT_1 var_20 = var_20_arg_0 >> 1; VAL [input_2=0, input_3=0, input_6=0, mask_SORT_1=1, state_11=0, state_17=0, state_21=0, var_10=0, var_13=-1, var_14=0, var_19=0, var_20=0, var_29=1, var_39=1] [L79] EXPR var_20 & mask_SORT_1 VAL [input_2=0, input_3=0, input_6=0, mask_SORT_1=1, state_11=0, state_17=0, state_21=0, var_10=0, var_13=-1, var_14=0, var_19=0, var_29=1, var_39=1] [L79] var_20 = var_20 & mask_SORT_1 [L80] SORT_1 var_23_arg_0 = state_17; [L81] SORT_5 var_23_arg_1 = state_21; [L82] SORT_5 var_23_arg_2 = input_6; [L83] SORT_5 var_23 = var_23_arg_0 ? var_23_arg_1 : var_23_arg_2; [L84] SORT_5 var_24_arg_0 = var_23; [L85] SORT_1 var_24 = var_24_arg_0 >> 1; VAL [input_2=0, input_3=0, mask_SORT_1=1, state_11=0, var_10=0, var_13=-1, var_14=0, var_19=0, var_20=0, var_24=0, var_29=1, var_39=1] [L86] EXPR var_24 & mask_SORT_1 VAL [input_2=0, input_3=0, mask_SORT_1=1, state_11=0, var_10=0, var_13=-1, var_14=0, var_19=0, var_20=0, var_29=1, var_39=1] [L86] var_24 = var_24 & mask_SORT_1 [L87] SORT_1 var_25_arg_0 = var_20; [L88] SORT_1 var_25_arg_1 = var_24; [L89] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L90] SORT_1 var_26_arg_0 = var_13; [L91] SORT_1 var_26_arg_1 = var_25; VAL [input_2=0, input_3=0, mask_SORT_1=1, state_11=0, var_10=0, var_14=0, var_19=0, var_20=0, var_26_arg_0=-1, var_26_arg_1=1, var_29=1, var_39=1] [L92] EXPR var_26_arg_0 | var_26_arg_1 VAL [input_2=0, input_3=0, mask_SORT_1=1, state_11=0, var_10=0, var_14=0, var_19=0, var_20=0, var_29=1, var_39=1] [L92] SORT_1 var_26 = var_26_arg_0 | var_26_arg_1; [L93] SORT_1 var_30_arg_0 = var_26; [L94] SORT_1 var_30 = ~var_30_arg_0; [L95] SORT_1 var_31_arg_0 = var_29; [L96] SORT_1 var_31_arg_1 = var_30; VAL [input_2=0, input_3=0, mask_SORT_1=1, state_11=0, var_10=0, var_14=0, var_19=0, var_20=0, var_29=1, var_31_arg_0=1, var_31_arg_1=-1, var_39=1] [L97] EXPR var_31_arg_0 & var_31_arg_1 VAL [input_2=0, input_3=0, mask_SORT_1=1, state_11=0, var_10=0, var_14=0, var_19=0, var_20=0, var_29=1, var_39=1] [L97] SORT_1 var_31 = var_31_arg_0 & var_31_arg_1; [L98] EXPR var_31 & mask_SORT_1 VAL [input_2=0, input_3=0, mask_SORT_1=1, state_11=0, var_10=0, var_14=0, var_19=0, var_20=0, var_29=1, var_39=1] [L98] var_31 = var_31 & mask_SORT_1 [L99] SORT_1 bad_32_arg_0 = var_31; [L100] CALL __VERIFIER_assert(!(bad_32_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 574 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 574 mSDsluCounter, 1696 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1300 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 569 IncrementalHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 396 mSDtfsCounter, 569 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=5, InterpolantAutomatonStates: 31, 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, 5 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 489 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2025-03-03 16:51:53,897 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.cal12.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 7631e780ab762af7049f4f894b74af417e60ccfcde47865ef4ca17d480eda758 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 16:51:55,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 16:51:55,792 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-03-03 16:51:55,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 16:51:55,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 16:51:55,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 16:51:55,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 16:51:55,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 16:51:55,820 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 16:51:55,820 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 16:51:55,820 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 16:51:55,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 16:51:55,821 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 16:51:55,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 16:51:55,821 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 16:51:55,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 16:51:55,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 16:51:55,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 16:51:55,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 16:51:55,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 16:51:55,821 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 16:51:55,821 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 16:51:55,822 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 16:51:55,822 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 16:51:55,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 16:51:55,822 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 16:51:55,822 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 16:51:55,822 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 16:51:55,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 16:51:55,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 16:51:55,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 16:51:55,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 16:51:55,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 16:51:55,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 16:51:55,823 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 16:51:55,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 16:51:55,823 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 16:51:55,823 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 16:51:55,823 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 16:51:55,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 16:51:55,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 16:51:55,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 16:51:55,823 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 -> 7631e780ab762af7049f4f894b74af417e60ccfcde47865ef4ca17d480eda758 [2025-03-03 16:51:56,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 16:51:56,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 16:51:56,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 16:51:56,058 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 16:51:56,058 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 16:51:56,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal12.c [2025-03-03 16:51:57,161 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5272beb56/77662f09981e4b3f9c4f50cb2dc0e438/FLAG38995de0a [2025-03-03 16:51:57,351 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 16:51:57,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal12.c [2025-03-03 16:51:57,360 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5272beb56/77662f09981e4b3f9c4f50cb2dc0e438/FLAG38995de0a [2025-03-03 16:51:57,375 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5272beb56/77662f09981e4b3f9c4f50cb2dc0e438 [2025-03-03 16:51:57,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 16:51:57,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 16:51:57,380 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 16:51:57,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 16:51:57,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 16:51:57,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed13e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57, skipping insertion in model container [2025-03-03 16:51:57,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 16:51:57,489 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.cal12.c[1245,1258] [2025-03-03 16:51:57,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 16:51:57,537 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 16:51:57,546 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.cal12.c[1245,1258] [2025-03-03 16:51:57,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 16:51:57,576 INFO L204 MainTranslator]: Completed translation [2025-03-03 16:51:57,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57 WrapperNode [2025-03-03 16:51:57,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 16:51:57,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 16:51:57,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 16:51:57,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 16:51:57,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,611 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 175 [2025-03-03 16:51:57,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 16:51:57,612 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 16:51:57,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 16:51:57,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 16:51:57,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,621 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,629 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2025-03-03 16:51:57,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,637 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,638 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 16:51:57,644 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 16:51:57,644 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 16:51:57,644 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 16:51:57,644 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (1/1) ... [2025-03-03 16:51:57,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 16:51:57,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:51:57,671 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) [2025-03-03 16:51:57,673 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 [2025-03-03 16:51:57,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 16:51:57,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 16:51:57,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-03 16:51:57,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 16:51:57,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 16:51:57,776 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 16:51:57,777 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 16:51:57,992 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2025-03-03 16:51:57,992 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 16:51:57,997 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 16:51:57,998 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 16:51:57,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 04:51:57 BoogieIcfgContainer [2025-03-03 16:51:57,999 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 16:51:58,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 16:51:58,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 16:51:58,004 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 16:51:58,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 04:51:57" (1/3) ... [2025-03-03 16:51:58,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1955bcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 04:51:58, skipping insertion in model container [2025-03-03 16:51:58,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 04:51:57" (2/3) ... [2025-03-03 16:51:58,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1955bcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 04:51:58, skipping insertion in model container [2025-03-03 16:51:58,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 04:51:57" (3/3) ... [2025-03-03 16:51:58,006 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal12.c [2025-03-03 16:51:58,017 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 16:51:58,019 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.cal12.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 16:51:58,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 16:51:58,064 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;@55efabd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 16:51:58,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 16:51:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2025-03-03 16:51:58,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-03 16:51:58,071 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:51:58,072 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-03 16:51:58,072 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:51:58,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:51:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash 38140359, now seen corresponding path program 1 times [2025-03-03 16:51:58,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 16:51:58,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998689488] [2025-03-03 16:51:58,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:51:58,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:51:58,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:51:58,090 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) [2025-03-03 16:51:58,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 16:51:58,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-03 16:51:58,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-03 16:51:58,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:51:58,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:51:58,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-03 16:51:58,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:51:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:51:58,349 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 16:51:58,350 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 16:51:58,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998689488] [2025-03-03 16:51:58,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998689488] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 16:51:58,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 16:51:58,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 16:51:58,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292389039] [2025-03-03 16:51:58,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 16:51:58,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 16:51:58,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 16:51:58,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 16:51:58,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 16:51:58,368 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-03-03 16:51:58,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:51:58,400 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2025-03-03 16:51:58,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 16:51:58,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2025-03-03 16:51:58,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:51:58,407 INFO L225 Difference]: With dead ends: 18 [2025-03-03 16:51:58,408 INFO L226 Difference]: Without dead ends: 10 [2025-03-03 16:51:58,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 16:51:58,412 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 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 [2025-03-03 16:51:58,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:51:58,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-03-03 16:51:58,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2025-03-03 16:51:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2025-03-03 16:51:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2025-03-03 16:51:58,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2025-03-03 16:51:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:51:58,431 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2025-03-03 16:51:58,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-03-03 16:51:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2025-03-03 16:51:58,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-03 16:51:58,433 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:51:58,433 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-03-03 16:51:58,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 16:51:58,634 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 [2025-03-03 16:51:58,634 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:51:58,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:51:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1926026653, now seen corresponding path program 1 times [2025-03-03 16:51:58,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 16:51:58,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115374584] [2025-03-03 16:51:58,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 16:51:58,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:51:58,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:51:58,638 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) [2025-03-03 16:51:58,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 16:51:58,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-03 16:51:58,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-03 16:51:58,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 16:51:58,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:51:58,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-03 16:51:58,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:51:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:51:58,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 16:51:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:51:59,574 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 16:51:59,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115374584] [2025-03-03 16:51:59,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115374584] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 16:51:59,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 16:51:59,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-03-03 16:51:59,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225756191] [2025-03-03 16:51:59,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 16:51:59,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 16:51:59,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 16:51:59,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 16:51:59,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-03 16:51:59,576 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2025-03-03 16:51:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:51:59,646 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2025-03-03 16:51:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 16:51:59,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 8 [2025-03-03 16:51:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:51:59,647 INFO L225 Difference]: With dead ends: 14 [2025-03-03 16:51:59,647 INFO L226 Difference]: Without dead ends: 12 [2025-03-03 16:51:59,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2025-03-03 16:51:59,648 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 16:51:59,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 16:51:59,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-03-03 16:51:59,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-03-03 16:51:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2025-03-03 16:51:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2025-03-03 16:51:59,650 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2025-03-03 16:51:59,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:51:59,650 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2025-03-03 16:51:59,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2025-03-03 16:51:59,650 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2025-03-03 16:51:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-03 16:51:59,650 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 16:51:59,650 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2025-03-03 16:51:59,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 16:51:59,851 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 [2025-03-03 16:51:59,852 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 16:51:59,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 16:51:59,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1791040441, now seen corresponding path program 2 times [2025-03-03 16:51:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 16:51:59,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638478608] [2025-03-03 16:51:59,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 16:51:59,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 16:51:59,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 16:51:59,854 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) [2025-03-03 16:51:59,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 16:51:59,930 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-03-03 16:51:59,957 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 16:51:59,957 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 16:51:59,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 16:51:59,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-03-03 16:51:59,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 16:52:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:52:00,923 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 16:52:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 16:52:19,024 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 16:52:19,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638478608] [2025-03-03 16:52:19,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638478608] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 16:52:19,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 16:52:19,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-03-03 16:52:19,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100381677] [2025-03-03 16:52:19,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 16:52:19,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-03 16:52:19,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 16:52:19,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-03 16:52:19,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-03-03 16:52:19,025 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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) [2025-03-03 16:52:19,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 16:52:19,135 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2025-03-03 16:52:19,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 16:52:19,135 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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) Word has length 11 [2025-03-03 16:52:19,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 16:52:19,135 INFO L225 Difference]: With dead ends: 12 [2025-03-03 16:52:19,135 INFO L226 Difference]: Without dead ends: 0 [2025-03-03 16:52:19,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-03-03 16:52:19,136 INFO L435 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 16:52:19,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 16:52:19,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-03 16:52:19,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-03 16:52:19,137 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) [2025-03-03 16:52:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-03 16:52:19,137 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2025-03-03 16:52:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 16:52:19,137 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-03 16:52:19,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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) [2025-03-03 16:52:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-03 16:52:19,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-03 16:52:19,139 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 16:52:19,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 16:52:19,340 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 [2025-03-03 16:52:19,343 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1] [2025-03-03 16:52:19,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-03 16:52:19,407 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 16:52:19,412 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2025-03-03 16:52:19,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 04:52:19 BoogieIcfgContainer [2025-03-03 16:52:19,414 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 16:52:19,415 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 16:52:19,415 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 16:52:19,415 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 16:52:19,416 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 04:51:57" (3/4) ... [2025-03-03 16:52:19,417 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-03 16:52:19,423 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-03-03 16:52:19,424 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-03 16:52:19,424 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-03 16:52:19,424 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-03 16:52:19,424 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-03 16:52:19,483 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-03 16:52:19,483 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-03 16:52:19,483 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 16:52:19,485 INFO L158 Benchmark]: Toolchain (without parser) took 22104.53ms. Allocated memory was 117.4MB in the beginning and 838.9MB in the end (delta: 721.4MB). Free memory was 93.0MB in the beginning and 496.2MB in the end (delta: -403.1MB). Peak memory consumption was 317.5MB. Max. memory is 16.1GB. [2025-03-03 16:52:19,486 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 16:52:19,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.24ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 78.6MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 16:52:19,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.00ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 76.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 16:52:19,487 INFO L158 Benchmark]: Boogie Preprocessor took 30.78ms. Allocated memory is still 117.4MB. Free memory was 76.7MB in the beginning and 74.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 16:52:19,487 INFO L158 Benchmark]: IcfgBuilder took 355.10ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 53.8MB in the end (delta: 20.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-03 16:52:19,488 INFO L158 Benchmark]: TraceAbstraction took 21414.08ms. Allocated memory was 117.4MB in the beginning and 838.9MB in the end (delta: 721.4MB). Free memory was 53.1MB in the beginning and 504.4MB in the end (delta: -451.3MB). Peak memory consumption was 267.2MB. Max. memory is 16.1GB. [2025-03-03 16:52:19,488 INFO L158 Benchmark]: Witness Printer took 68.24ms. Allocated memory is still 838.9MB. Free memory was 504.4MB in the beginning and 496.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 16:52:19,489 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.24ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 78.6MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.00ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 76.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.78ms. Allocated memory is still 117.4MB. Free memory was 76.7MB in the beginning and 74.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 355.10ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 53.8MB in the end (delta: 20.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 21414.08ms. Allocated memory was 117.4MB in the beginning and 838.9MB in the end (delta: 721.4MB). Free memory was 53.1MB in the beginning and 504.4MB in the end (delta: -451.3MB). Peak memory consumption was 267.2MB. Max. memory is 16.1GB. * Witness Printer took 68.24ms. Allocated memory is still 838.9MB. Free memory was 504.4MB in the beginning and 496.2MB in the end (delta: 8.2MB). 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: 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, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.3s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 10 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, InterpolantAutomatonStates: 19, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 20.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 12 QuantifiedInterpolants, 47152 SizeOfPredicates, 24 NumberOfNonLiveVariables, 309 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 2/18 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: 58]: Location Invariant Derived location invariant: (((((((0 == state_17) && (0 == var_10)) && (1 == var_29)) && (0 == state_11)) && (1 == mask_SORT_1)) || (((((1 == state_17) && (0 == var_10)) && (1 == var_29)) && (1 == mask_SORT_1)) && (1 == state_11))) || (((((0 == state_17) && (0 == var_10)) && (1 == var_29)) && (1 == mask_SORT_1)) && (1 == state_11))) RESULT: Ultimate proved your program to be correct! [2025-03-03 16:52:19,513 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