./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-85.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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/hardness-nfm22/hardness_variablewrapping_normal_file-85.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 6afecf8b719ebabe0f5d950a91928c70dceb2d3c076eae572c5fd9dee7e38018 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 16:10:53,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 16:10:53,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 16:10:53,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 16:10:53,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 16:10:53,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 16:10:53,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 16:10:53,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 16:10:53,999 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 16:10:53,999 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 16:10:53,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 16:10:54,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 16:10:54,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 16:10:54,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 16:10:54,000 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 16:10:54,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 16:10:54,001 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:10:54,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 16:10:54,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 16:10:54,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 16:10:54,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 16:10:54,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 16:10:54,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 16:10:54,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 16:10:54,002 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6afecf8b719ebabe0f5d950a91928c70dceb2d3c076eae572c5fd9dee7e38018 [2025-03-08 16:10:54,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 16:10:54,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 16:10:54,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 16:10:54,262 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 16:10:54,263 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 16:10:54,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-85.i [2025-03-08 16:10:55,400 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482634ca5/3d5ebe10d5c64532b8f6bec82b7b8844/FLAG1cd0b234e [2025-03-08 16:10:55,622 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 16:10:55,623 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-85.i [2025-03-08 16:10:55,632 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482634ca5/3d5ebe10d5c64532b8f6bec82b7b8844/FLAG1cd0b234e [2025-03-08 16:10:55,646 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/482634ca5/3d5ebe10d5c64532b8f6bec82b7b8844 [2025-03-08 16:10:55,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 16:10:55,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 16:10:55,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 16:10:55,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 16:10:55,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 16:10:55,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@778909ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55, skipping insertion in model container [2025-03-08 16:10:55,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 16:10:55,768 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/hardness-nfm22/hardness_variablewrapping_normal_file-85.i[913,926] [2025-03-08 16:10:55,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:10:55,812 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 16:10:55,819 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/hardness-nfm22/hardness_variablewrapping_normal_file-85.i[913,926] [2025-03-08 16:10:55,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 16:10:55,845 INFO L204 MainTranslator]: Completed translation [2025-03-08 16:10:55,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55 WrapperNode [2025-03-08 16:10:55,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 16:10:55,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 16:10:55,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 16:10:55,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 16:10:55,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,885 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 123 [2025-03-08 16:10:55,885 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 16:10:55,887 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 16:10:55,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 16:10:55,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 16:10:55,893 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,910 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 16:10:55,914 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,922 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,923 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 16:10:55,933 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 16:10:55,933 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 16:10:55,933 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 16:10:55,934 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (1/1) ... [2025-03-08 16:10:55,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 16:10:55,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 16:10:55,959 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) [2025-03-08 16:10:55,964 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 [2025-03-08 16:10:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 16:10:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 16:10:55,978 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 16:10:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 16:10:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 16:10:55,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 16:10:56,033 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 16:10:56,035 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 16:10:56,220 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-08 16:10:56,220 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 16:10:56,226 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 16:10:56,227 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 16:10:56,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:10:56 BoogieIcfgContainer [2025-03-08 16:10:56,227 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 16:10:56,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 16:10:56,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 16:10:56,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 16:10:56,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:10:55" (1/3) ... [2025-03-08 16:10:56,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c93c336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:10:56, skipping insertion in model container [2025-03-08 16:10:56,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:10:55" (2/3) ... [2025-03-08 16:10:56,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c93c336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:10:56, skipping insertion in model container [2025-03-08 16:10:56,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:10:56" (3/3) ... [2025-03-08 16:10:56,234 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-85.i [2025-03-08 16:10:56,246 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 16:10:56,248 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_normal_file-85.i that has 2 procedures, 58 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 16:10:56,294 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 16:10:56,304 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;@3e001187, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 16:10:56,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 16:10:56,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-08 16:10:56,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 16:10:56,319 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:10:56,320 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:10:56,321 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:10:56,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:10:56,327 INFO L85 PathProgramCache]: Analyzing trace with hash 67114896, now seen corresponding path program 1 times [2025-03-08 16:10:56,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:10:56,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952499642] [2025-03-08 16:10:56,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:10:56,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:10:56,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 16:10:56,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 16:10:56,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:10:56,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:11:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-03-08 16:11:01,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:11:01,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952499642] [2025-03-08 16:11:01,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952499642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:11:01,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:11:01,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 16:11:01,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371207403] [2025-03-08 16:11:01,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:11:01,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 16:11:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:11:01,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 16:11:01,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:11:01,387 INFO L87 Difference]: Start difference. First operand has 58 states, 32 states have (on average 1.28125) internal successors, (41), 33 states have internal predecessors, (41), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:11:02,608 INFO L93 Difference]: Finished difference Result 156 states and 259 transitions. [2025-03-08 16:11:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 16:11:02,610 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 139 [2025-03-08 16:11:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:11:02,615 INFO L225 Difference]: With dead ends: 156 [2025-03-08 16:11:02,615 INFO L226 Difference]: Without dead ends: 101 [2025-03-08 16:11:02,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-03-08 16:11:02,619 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 87 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 16:11:02,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 345 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 16:11:02,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-03-08 16:11:02,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 69. [2025-03-08 16:11:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 42 states have internal predecessors, (49), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-08 16:11:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 99 transitions. [2025-03-08 16:11:02,664 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 99 transitions. Word has length 139 [2025-03-08 16:11:02,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:11:02,664 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 99 transitions. [2025-03-08 16:11:02,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 99 transitions. [2025-03-08 16:11:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 16:11:02,670 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:11:02,670 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:11:02,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 16:11:02,670 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:11:02,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:11:02,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1809925231, now seen corresponding path program 1 times [2025-03-08 16:11:02,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:11:02,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53953809] [2025-03-08 16:11:02,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:11:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:11:02,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 16:11:02,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 16:11:02,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:11:02,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:11:05,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-03-08 16:11:05,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:11:05,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53953809] [2025-03-08 16:11:05,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53953809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:11:05,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:11:05,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 16:11:05,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962407766] [2025-03-08 16:11:05,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:11:05,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 16:11:05,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:11:05,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 16:11:05,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-08 16:11:05,230 INFO L87 Difference]: Start difference. First operand 69 states and 99 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:06,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:11:06,683 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2025-03-08 16:11:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 16:11:06,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 139 [2025-03-08 16:11:06,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:11:06,685 INFO L225 Difference]: With dead ends: 107 [2025-03-08 16:11:06,685 INFO L226 Difference]: Without dead ends: 105 [2025-03-08 16:11:06,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-03-08 16:11:06,686 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 65 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 16:11:06,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 386 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 16:11:06,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-08 16:11:06,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 67. [2025-03-08 16:11:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 40 states have internal predecessors, (46), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-08 16:11:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2025-03-08 16:11:06,702 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 139 [2025-03-08 16:11:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:11:06,702 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2025-03-08 16:11:06,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:06,703 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2025-03-08 16:11:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 16:11:06,704 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:11:06,704 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:11:06,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 16:11:06,704 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:11:06,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:11:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2126609484, now seen corresponding path program 1 times [2025-03-08 16:11:06,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:11:06,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912816665] [2025-03-08 16:11:06,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:11:06,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:11:06,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 16:11:06,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 16:11:06,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:11:06,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:11:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-03-08 16:11:11,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:11:11,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912816665] [2025-03-08 16:11:11,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912816665] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:11:11,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:11:11,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 16:11:11,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606441376] [2025-03-08 16:11:11,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:11:11,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 16:11:11,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:11:11,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 16:11:11,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:11:11,153 INFO L87 Difference]: Start difference. First operand 67 states and 96 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:14,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:11:14,144 INFO L93 Difference]: Finished difference Result 117 states and 153 transitions. [2025-03-08 16:11:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 16:11:14,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 140 [2025-03-08 16:11:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:11:14,146 INFO L225 Difference]: With dead ends: 117 [2025-03-08 16:11:14,146 INFO L226 Difference]: Without dead ends: 115 [2025-03-08 16:11:14,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2025-03-08 16:11:14,147 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 95 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 16:11:14,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 376 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 16:11:14,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-03-08 16:11:14,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 71. [2025-03-08 16:11:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 44 states have internal predecessors, (53), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-08 16:11:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 103 transitions. [2025-03-08 16:11:14,164 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 103 transitions. Word has length 140 [2025-03-08 16:11:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:11:14,165 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 103 transitions. [2025-03-08 16:11:14,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 103 transitions. [2025-03-08 16:11:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 16:11:14,166 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:11:14,166 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:11:14,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 16:11:14,166 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:11:14,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:11:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2125685963, now seen corresponding path program 1 times [2025-03-08 16:11:14,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:11:14,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763703824] [2025-03-08 16:11:14,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:11:14,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:11:14,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 16:11:14,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 16:11:14,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:11:14,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:11:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-03-08 16:11:16,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:11:16,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763703824] [2025-03-08 16:11:16,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763703824] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:11:16,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:11:16,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 16:11:16,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627353762] [2025-03-08 16:11:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:11:16,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 16:11:16,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:11:16,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 16:11:16,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-08 16:11:16,073 INFO L87 Difference]: Start difference. First operand 71 states and 103 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:16,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:11:16,316 INFO L93 Difference]: Finished difference Result 108 states and 145 transitions. [2025-03-08 16:11:16,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 16:11:16,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 140 [2025-03-08 16:11:16,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:11:16,317 INFO L225 Difference]: With dead ends: 108 [2025-03-08 16:11:16,318 INFO L226 Difference]: Without dead ends: 106 [2025-03-08 16:11:16,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:11:16,318 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 72 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 16:11:16,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 344 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 16:11:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-03-08 16:11:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 74. [2025-03-08 16:11:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 47 states have internal predecessors, (59), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-08 16:11:16,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 109 transitions. [2025-03-08 16:11:16,334 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 109 transitions. Word has length 140 [2025-03-08 16:11:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:11:16,334 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 109 transitions. [2025-03-08 16:11:16,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 109 transitions. [2025-03-08 16:11:16,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 16:11:16,335 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:11:16,335 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:11:16,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 16:11:16,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:11:16,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:11:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1211400173, now seen corresponding path program 1 times [2025-03-08 16:11:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:11:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316918699] [2025-03-08 16:11:16,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:11:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:11:16,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 16:11:16,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 16:11:16,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:11:16,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:11:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-03-08 16:11:20,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:11:20,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316918699] [2025-03-08 16:11:20,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316918699] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:11:20,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:11:20,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 16:11:20,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499349090] [2025-03-08 16:11:20,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:11:20,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 16:11:20,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:11:20,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 16:11:20,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:11:20,454 INFO L87 Difference]: Start difference. First operand 74 states and 109 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:22,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:11:22,112 INFO L93 Difference]: Finished difference Result 138 states and 182 transitions. [2025-03-08 16:11:22,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 16:11:22,113 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 140 [2025-03-08 16:11:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:11:22,116 INFO L225 Difference]: With dead ends: 138 [2025-03-08 16:11:22,116 INFO L226 Difference]: Without dead ends: 136 [2025-03-08 16:11:22,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2025-03-08 16:11:22,120 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 110 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:11:22,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 372 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 16:11:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-03-08 16:11:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2025-03-08 16:11:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 33 states have call successors, (33), 5 states have call predecessors, (33), 5 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2025-03-08 16:11:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2025-03-08 16:11:22,147 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 140 [2025-03-08 16:11:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:11:22,147 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2025-03-08 16:11:22,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2025-03-08 16:11:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 16:11:22,148 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:11:22,148 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:11:22,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 16:11:22,148 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:11:22,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:11:22,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1182771022, now seen corresponding path program 1 times [2025-03-08 16:11:22,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:11:22,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174626754] [2025-03-08 16:11:22,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:11:22,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:11:22,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 16:11:22,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 16:11:22,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:11:22,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 16:11:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2025-03-08 16:11:26,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 16:11:26,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174626754] [2025-03-08 16:11:26,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174626754] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 16:11:26,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 16:11:26,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 16:11:26,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837936550] [2025-03-08 16:11:26,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 16:11:26,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 16:11:26,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 16:11:26,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 16:11:26,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-03-08 16:11:26,766 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 16:11:28,731 INFO L93 Difference]: Finished difference Result 237 states and 323 transitions. [2025-03-08 16:11:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 16:11:28,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 140 [2025-03-08 16:11:28,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 16:11:28,733 INFO L225 Difference]: With dead ends: 237 [2025-03-08 16:11:28,733 INFO L226 Difference]: Without dead ends: 135 [2025-03-08 16:11:28,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2025-03-08 16:11:28,734 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 97 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 16:11:28,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 383 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 16:11:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-03-08 16:11:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 120. [2025-03-08 16:11:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 79 states have internal predecessors, (93), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2025-03-08 16:11:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 163 transitions. [2025-03-08 16:11:28,752 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 163 transitions. Word has length 140 [2025-03-08 16:11:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 16:11:28,752 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 163 transitions. [2025-03-08 16:11:28,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2025-03-08 16:11:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 163 transitions. [2025-03-08 16:11:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 16:11:28,753 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 16:11:28,753 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 16:11:28,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 16:11:28,753 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 16:11:28,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 16:11:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash 360903349, now seen corresponding path program 1 times [2025-03-08 16:11:28,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 16:11:28,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459763513] [2025-03-08 16:11:28,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 16:11:28,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 16:11:28,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 16:11:28,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 16:11:28,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 16:11:28,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat