./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.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_operatoramount_amount10_file-23.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 d07b7415c3fe9e96ce75813c6dc74e1ba61589ee27a287636eeb985665ada946 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:15:03,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:15:03,659 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:15:03,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:15:03,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:15:03,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:15:03,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:15:03,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:15:03,689 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:15:03,689 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:15:03,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:15:03,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:15:03,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:15:03,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:15:03,690 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:15:03,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:15:03,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:15:03,691 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:15:03,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:15:03,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:15:03,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:15:03,691 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:15:03,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:15:03,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:15:03,691 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:15:03,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:15:03,692 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:15:03,692 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:15:03,692 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:15:03,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:15:03,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:15:03,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:15:03,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:15:03,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:15:03,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:15:03,693 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:15:03,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:15:03,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:15:03,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:15:03,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:15:03,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:15:03,693 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:15:03,693 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:15:03,693 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 -> d07b7415c3fe9e96ce75813c6dc74e1ba61589ee27a287636eeb985665ada946 [2025-03-08 15:15:03,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:15:03,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:15:03,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:15:03,904 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:15:03,904 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:15:03,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i [2025-03-08 15:15:05,023 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87721f10/c53791a977fb4acdbd3d06844d17efa3/FLAG494f9b8f9 [2025-03-08 15:15:05,226 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:15:05,226 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-23.i [2025-03-08 15:15:05,231 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87721f10/c53791a977fb4acdbd3d06844d17efa3/FLAG494f9b8f9 [2025-03-08 15:15:05,241 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f87721f10/c53791a977fb4acdbd3d06844d17efa3 [2025-03-08 15:15:05,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:15:05,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:15:05,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:15:05,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:15:05,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:15:05,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75ef33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05, skipping insertion in model container [2025-03-08 15:15:05,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,260 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:15:05,353 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_operatoramount_amount10_file-23.i[915,928] [2025-03-08 15:15:05,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:15:05,395 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:15:05,404 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_operatoramount_amount10_file-23.i[915,928] [2025-03-08 15:15:05,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:15:05,432 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:15:05,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05 WrapperNode [2025-03-08 15:15:05,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:15:05,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:15:05,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:15:05,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:15:05,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,469 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2025-03-08 15:15:05,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:15:05,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:15:05,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:15:05,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:15:05,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,502 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 15:15:05,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,505 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,510 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:15:05,514 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:15:05,514 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:15:05,514 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:15:05,515 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (1/1) ... [2025-03-08 15:15:05,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:15:05,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:15:05,542 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 15:15:05,546 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 15:15:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:15:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:15:05,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:15:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:15:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:15:05,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:15:05,606 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:15:05,607 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:15:05,748 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L73: havoc property_#t~ite17#1;havoc property_#t~bitwise14#1;havoc property_#t~ite16#1;havoc property_#t~bitwise15#1; [2025-03-08 15:15:05,766 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-03-08 15:15:05,766 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:15:05,785 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:15:05,785 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:15:05,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:15:05 BoogieIcfgContainer [2025-03-08 15:15:05,787 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:15:05,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:15:05,790 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:15:05,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:15:05,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:15:05" (1/3) ... [2025-03-08 15:15:05,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6e53c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:15:05, skipping insertion in model container [2025-03-08 15:15:05,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:15:05" (2/3) ... [2025-03-08 15:15:05,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6e53c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:15:05, skipping insertion in model container [2025-03-08 15:15:05,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:15:05" (3/3) ... [2025-03-08 15:15:05,795 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-23.i [2025-03-08 15:15:05,805 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:15:05,806 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount10_file-23.i that has 2 procedures, 61 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:15:05,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:15:05,849 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;@3abedfa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:15:05,850 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:15:05,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-08 15:15:05,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 15:15:05,858 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:05,859 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:05,859 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:05,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1094133334, now seen corresponding path program 1 times [2025-03-08 15:15:05,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:05,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166775174] [2025-03-08 15:15:05,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:05,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:05,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 15:15:05,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 15:15:05,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:05,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2025-03-08 15:15:06,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:06,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166775174] [2025-03-08 15:15:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166775174] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:15:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688606371] [2025-03-08 15:15:06,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:06,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:15:06,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:15:06,030 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) [2025-03-08 15:15:06,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 15:15:06,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 15:15:06,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 15:15:06,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:06,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:06,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:15:06,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:15:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2025-03-08 15:15:06,129 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:15:06,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688606371] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:06,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:15:06,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:15:06,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572935669] [2025-03-08 15:15:06,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:06,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:15:06,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:06,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:15:06,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:15:06,148 INFO L87 Difference]: Start difference. First operand has 61 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-08 15:15:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:06,171 INFO L93 Difference]: Finished difference Result 116 states and 189 transitions. [2025-03-08 15:15:06,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:15:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2025-03-08 15:15:06,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:06,176 INFO L225 Difference]: With dead ends: 116 [2025-03-08 15:15:06,176 INFO L226 Difference]: Without dead ends: 58 [2025-03-08 15:15:06,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:15:06,179 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:06,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:15:06,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-08 15:15:06,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-03-08 15:15:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-08 15:15:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2025-03-08 15:15:06,204 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 89 [2025-03-08 15:15:06,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:06,204 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2025-03-08 15:15:06,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-08 15:15:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2025-03-08 15:15:06,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 15:15:06,206 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:06,207 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:06,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 15:15:06,407 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,SelfDestructingSolverStorable0 [2025-03-08 15:15:06,407 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:06,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:06,408 INFO L85 PathProgramCache]: Analyzing trace with hash -984079626, now seen corresponding path program 1 times [2025-03-08 15:15:06,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:06,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691359169] [2025-03-08 15:15:06,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:06,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:06,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 15:15:06,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 15:15:06,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:06,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:06,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:06,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691359169] [2025-03-08 15:15:06,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691359169] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:06,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:06,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 15:15:06,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171019743] [2025-03-08 15:15:06,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:06,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 15:15:06,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:06,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 15:15:06,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:15:06,863 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:06,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:06,988 INFO L93 Difference]: Finished difference Result 104 states and 148 transitions. [2025-03-08 15:15:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 15:15:06,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 89 [2025-03-08 15:15:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:06,990 INFO L225 Difference]: With dead ends: 104 [2025-03-08 15:15:06,990 INFO L226 Difference]: Without dead ends: 102 [2025-03-08 15:15:06,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 15:15:06,991 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 61 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:06,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 369 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:15:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-03-08 15:15:07,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2025-03-08 15:15:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 71 states have internal predecessors, (92), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 15:15:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 144 transitions. [2025-03-08 15:15:07,017 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 144 transitions. Word has length 89 [2025-03-08 15:15:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:07,019 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 144 transitions. [2025-03-08 15:15:07,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 144 transitions. [2025-03-08 15:15:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-08 15:15:07,021 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:07,022 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:07,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:15:07,022 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:07,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash -500052233, now seen corresponding path program 1 times [2025-03-08 15:15:07,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:07,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954436246] [2025-03-08 15:15:07,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:07,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:07,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-08 15:15:07,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-08 15:15:07,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:07,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:07,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:07,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954436246] [2025-03-08 15:15:07,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954436246] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:07,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:07,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:15:07,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464899059] [2025-03-08 15:15:07,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:07,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:15:07,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:07,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:15:07,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:07,086 INFO L87 Difference]: Start difference. First operand 99 states and 144 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:07,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:07,133 INFO L93 Difference]: Finished difference Result 193 states and 277 transitions. [2025-03-08 15:15:07,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:15:07,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 92 [2025-03-08 15:15:07,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:07,136 INFO L225 Difference]: With dead ends: 193 [2025-03-08 15:15:07,136 INFO L226 Difference]: Without dead ends: 97 [2025-03-08 15:15:07,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:07,137 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 8 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:07,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 145 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:15:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-03-08 15:15:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2025-03-08 15:15:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 59 states have internal predecessors, (73), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 15:15:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 125 transitions. [2025-03-08 15:15:07,153 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 125 transitions. Word has length 92 [2025-03-08 15:15:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:07,154 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 125 transitions. [2025-03-08 15:15:07,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 125 transitions. [2025-03-08 15:15:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-08 15:15:07,156 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:07,156 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:07,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:15:07,157 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:07,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:07,157 INFO L85 PathProgramCache]: Analyzing trace with hash -97582839, now seen corresponding path program 1 times [2025-03-08 15:15:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:07,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324032668] [2025-03-08 15:15:07,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:07,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:07,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-08 15:15:07,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-08 15:15:07,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:07,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324032668] [2025-03-08 15:15:07,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324032668] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:07,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:07,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:15:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857511024] [2025-03-08 15:15:07,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:07,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:15:07,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:07,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:15:07,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:07,213 INFO L87 Difference]: Start difference. First operand 87 states and 125 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:07,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:07,253 INFO L93 Difference]: Finished difference Result 173 states and 249 transitions. [2025-03-08 15:15:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:15:07,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 92 [2025-03-08 15:15:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:07,256 INFO L225 Difference]: With dead ends: 173 [2025-03-08 15:15:07,256 INFO L226 Difference]: Without dead ends: 89 [2025-03-08 15:15:07,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:07,257 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 38 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:07,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 117 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:15:07,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-03-08 15:15:07,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2025-03-08 15:15:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 15:15:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2025-03-08 15:15:07,274 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 92 [2025-03-08 15:15:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:07,274 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2025-03-08 15:15:07,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2025-03-08 15:15:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 15:15:07,275 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:07,275 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:07,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 15:15:07,276 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:07,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:07,278 INFO L85 PathProgramCache]: Analyzing trace with hash -628173820, now seen corresponding path program 1 times [2025-03-08 15:15:07,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:07,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262023700] [2025-03-08 15:15:07,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:07,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:07,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 15:15:07,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 15:15:07,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:07,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:07,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:07,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262023700] [2025-03-08 15:15:07,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262023700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:07,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:07,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 15:15:07,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191499395] [2025-03-08 15:15:07,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:07,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 15:15:07,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:07,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 15:15:07,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 15:15:07,670 INFO L87 Difference]: Start difference. First operand 87 states and 124 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:07,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:07,837 INFO L93 Difference]: Finished difference Result 115 states and 158 transitions. [2025-03-08 15:15:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 15:15:07,837 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2025-03-08 15:15:07,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:07,838 INFO L225 Difference]: With dead ends: 115 [2025-03-08 15:15:07,838 INFO L226 Difference]: Without dead ends: 113 [2025-03-08 15:15:07,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-03-08 15:15:07,839 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 26 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:07,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 476 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:15:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-03-08 15:15:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 98. [2025-03-08 15:15:07,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 70 states have internal predecessors, (87), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 15:15:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2025-03-08 15:15:07,854 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 95 [2025-03-08 15:15:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:07,855 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2025-03-08 15:15:07,855 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, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2025-03-08 15:15:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 15:15:07,856 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:07,856 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:07,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 15:15:07,857 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:07,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash 536444449, now seen corresponding path program 1 times [2025-03-08 15:15:07,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:07,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4197308] [2025-03-08 15:15:07,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:07,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:07,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 15:15:07,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 15:15:07,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:07,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:08,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:08,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4197308] [2025-03-08 15:15:08,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4197308] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:08,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:08,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 15:15:08,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83884575] [2025-03-08 15:15:08,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:08,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 15:15:08,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:08,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 15:15:08,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 15:15:08,090 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:08,324 INFO L93 Difference]: Finished difference Result 143 states and 195 transitions. [2025-03-08 15:15:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:15:08,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2025-03-08 15:15:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:08,326 INFO L225 Difference]: With dead ends: 143 [2025-03-08 15:15:08,326 INFO L226 Difference]: Without dead ends: 141 [2025-03-08 15:15:08,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-03-08 15:15:08,327 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 66 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:08,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 493 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:15:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-03-08 15:15:08,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 99. [2025-03-08 15:15:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 71 states have internal predecessors, (89), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 15:15:08,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2025-03-08 15:15:08,344 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 96 [2025-03-08 15:15:08,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:08,344 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2025-03-08 15:15:08,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2025-03-08 15:15:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 15:15:08,345 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:08,346 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:08,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 15:15:08,347 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:08,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:08,347 INFO L85 PathProgramCache]: Analyzing trace with hash 339930944, now seen corresponding path program 1 times [2025-03-08 15:15:08,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:08,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513660680] [2025-03-08 15:15:08,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:08,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:08,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 15:15:08,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 15:15:08,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:08,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:08,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:08,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513660680] [2025-03-08 15:15:08,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513660680] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:08,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:08,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 15:15:08,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155488843] [2025-03-08 15:15:08,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:08,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 15:15:08,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:08,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 15:15:08,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 15:15:08,812 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:09,088 INFO L93 Difference]: Finished difference Result 150 states and 206 transitions. [2025-03-08 15:15:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:15:09,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2025-03-08 15:15:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:09,090 INFO L225 Difference]: With dead ends: 150 [2025-03-08 15:15:09,090 INFO L226 Difference]: Without dead ends: 148 [2025-03-08 15:15:09,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-03-08 15:15:09,091 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 46 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:09,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 590 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:15:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-03-08 15:15:09,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 109. [2025-03-08 15:15:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 80 states have (on average 1.3) internal successors, (104), 81 states have internal predecessors, (104), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 15:15:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2025-03-08 15:15:09,105 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 96 [2025-03-08 15:15:09,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:09,106 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2025-03-08 15:15:09,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:09,106 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2025-03-08 15:15:09,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-08 15:15:09,107 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:09,107 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:09,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 15:15:09,107 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:09,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1430205853, now seen corresponding path program 1 times [2025-03-08 15:15:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:09,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131745446] [2025-03-08 15:15:09,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:09,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:09,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-08 15:15:09,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-08 15:15:09,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:09,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:09,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:09,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131745446] [2025-03-08 15:15:09,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131745446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:09,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:09,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:15:09,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599723575] [2025-03-08 15:15:09,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:09,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:15:09,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:09,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:15:09,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:15:09,178 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:09,230 INFO L93 Difference]: Finished difference Result 253 states and 362 transitions. [2025-03-08 15:15:09,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:15:09,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 97 [2025-03-08 15:15:09,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:09,233 INFO L225 Difference]: With dead ends: 253 [2025-03-08 15:15:09,233 INFO L226 Difference]: Without dead ends: 147 [2025-03-08 15:15:09,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:15:09,234 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 24 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:09,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 246 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:15:09,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-03-08 15:15:09,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2025-03-08 15:15:09,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 91 states have internal predecessors, (119), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 15:15:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 171 transitions. [2025-03-08 15:15:09,247 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 171 transitions. Word has length 97 [2025-03-08 15:15:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:09,247 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 171 transitions. [2025-03-08 15:15:09,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:09,247 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 171 transitions. [2025-03-08 15:15:09,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-08 15:15:09,248 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:09,249 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:09,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 15:15:09,249 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:09,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:09,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1962632459, now seen corresponding path program 1 times [2025-03-08 15:15:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:09,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162868824] [2025-03-08 15:15:09,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:09,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:09,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-08 15:15:09,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-08 15:15:09,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:09,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:09,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:09,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162868824] [2025-03-08 15:15:09,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162868824] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:09,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:09,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:15:09,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785653847] [2025-03-08 15:15:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:09,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:15:09,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:09,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:15:09,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:15:09,314 INFO L87 Difference]: Start difference. First operand 119 states and 171 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:09,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:09,380 INFO L93 Difference]: Finished difference Result 263 states and 377 transitions. [2025-03-08 15:15:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:15:09,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 97 [2025-03-08 15:15:09,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:09,382 INFO L225 Difference]: With dead ends: 263 [2025-03-08 15:15:09,382 INFO L226 Difference]: Without dead ends: 147 [2025-03-08 15:15:09,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:15:09,382 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 30 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:09,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 317 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:15:09,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-03-08 15:15:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 129. [2025-03-08 15:15:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 100 states have (on average 1.34) internal successors, (134), 101 states have internal predecessors, (134), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 15:15:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 186 transitions. [2025-03-08 15:15:09,390 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 186 transitions. Word has length 97 [2025-03-08 15:15:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:09,390 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 186 transitions. [2025-03-08 15:15:09,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 186 transitions. [2025-03-08 15:15:09,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 15:15:09,391 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:09,391 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:09,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 15:15:09,391 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:09,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:09,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1924513044, now seen corresponding path program 1 times [2025-03-08 15:15:09,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:09,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000567635] [2025-03-08 15:15:09,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:09,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:09,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 15:15:09,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 15:15:09,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:09,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:09,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:09,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000567635] [2025-03-08 15:15:09,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000567635] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:09,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:09,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:15:09,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446733308] [2025-03-08 15:15:09,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:09,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:15:09,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:09,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:15:09,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:09,422 INFO L87 Difference]: Start difference. First operand 129 states and 186 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:09,462 INFO L93 Difference]: Finished difference Result 304 states and 432 transitions. [2025-03-08 15:15:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:15:09,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 98 [2025-03-08 15:15:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:09,464 INFO L225 Difference]: With dead ends: 304 [2025-03-08 15:15:09,464 INFO L226 Difference]: Without dead ends: 178 [2025-03-08 15:15:09,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:09,465 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 48 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:09,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 137 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:15:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-08 15:15:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 166. [2025-03-08 15:15:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 123 states have (on average 1.2357723577235773) internal successors, (152), 126 states have internal predecessors, (152), 38 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-08 15:15:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 228 transitions. [2025-03-08 15:15:09,478 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 228 transitions. Word has length 98 [2025-03-08 15:15:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:09,478 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 228 transitions. [2025-03-08 15:15:09,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 228 transitions. [2025-03-08 15:15:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 15:15:09,479 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:09,480 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:09,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 15:15:09,480 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:09,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:09,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1150927390, now seen corresponding path program 1 times [2025-03-08 15:15:09,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:09,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400290489] [2025-03-08 15:15:09,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:09,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:09,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 15:15:09,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 15:15:09,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:09,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:09,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:09,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400290489] [2025-03-08 15:15:09,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400290489] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:09,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:09,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:15:09,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989431868] [2025-03-08 15:15:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:09,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:15:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:09,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:15:09,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:09,513 INFO L87 Difference]: Start difference. First operand 166 states and 228 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:09,552 INFO L93 Difference]: Finished difference Result 322 states and 439 transitions. [2025-03-08 15:15:09,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:15:09,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 98 [2025-03-08 15:15:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:09,554 INFO L225 Difference]: With dead ends: 322 [2025-03-08 15:15:09,554 INFO L226 Difference]: Without dead ends: 173 [2025-03-08 15:15:09,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:09,555 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 35 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:09,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 156 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:15:09,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-08 15:15:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 143. [2025-03-08 15:15:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 108 states have internal predecessors, (129), 32 states have call successors, (32), 4 states have call predecessors, (32), 4 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-08 15:15:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 193 transitions. [2025-03-08 15:15:09,565 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 193 transitions. Word has length 98 [2025-03-08 15:15:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:09,565 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 193 transitions. [2025-03-08 15:15:09,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 193 transitions. [2025-03-08 15:15:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-08 15:15:09,566 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:09,566 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:09,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 15:15:09,566 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:09,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:09,567 INFO L85 PathProgramCache]: Analyzing trace with hash 114008292, now seen corresponding path program 1 times [2025-03-08 15:15:09,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:09,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196345463] [2025-03-08 15:15:09,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:09,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:09,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-08 15:15:09,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 15:15:09,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:09,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:09,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:09,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196345463] [2025-03-08 15:15:09,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196345463] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:09,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:09,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 15:15:09,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104190435] [2025-03-08 15:15:09,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:09,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 15:15:09,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:09,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 15:15:09,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:15:09,928 INFO L87 Difference]: Start difference. First operand 143 states and 193 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:10,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:10,155 INFO L93 Difference]: Finished difference Result 172 states and 222 transitions. [2025-03-08 15:15:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 15:15:10,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 99 [2025-03-08 15:15:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:10,156 INFO L225 Difference]: With dead ends: 172 [2025-03-08 15:15:10,156 INFO L226 Difference]: Without dead ends: 170 [2025-03-08 15:15:10,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-08 15:15:10,157 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 26 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:10,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 616 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:15:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-08 15:15:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2025-03-08 15:15:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 125 states have (on average 1.184) internal successors, (148), 128 states have internal predecessors, (148), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 15:15:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 216 transitions. [2025-03-08 15:15:10,168 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 216 transitions. Word has length 99 [2025-03-08 15:15:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:10,168 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 216 transitions. [2025-03-08 15:15:10,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 216 transitions. [2025-03-08 15:15:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-08 15:15:10,169 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:10,169 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:10,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 15:15:10,170 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:10,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash 790165049, now seen corresponding path program 1 times [2025-03-08 15:15:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:10,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785588994] [2025-03-08 15:15:10,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:10,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-08 15:15:10,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-08 15:15:10,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:10,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:10,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:10,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785588994] [2025-03-08 15:15:10,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785588994] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:10,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:10,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:15:10,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650582419] [2025-03-08 15:15:10,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:10,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:15:10,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:10,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:15:10,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:15:10,230 INFO L87 Difference]: Start difference. First operand 166 states and 216 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:10,336 INFO L93 Difference]: Finished difference Result 349 states and 456 transitions. [2025-03-08 15:15:10,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:15:10,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 100 [2025-03-08 15:15:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:10,338 INFO L225 Difference]: With dead ends: 349 [2025-03-08 15:15:10,338 INFO L226 Difference]: Without dead ends: 204 [2025-03-08 15:15:10,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:15:10,339 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 22 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:10,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 262 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:15:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-03-08 15:15:10,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 177. [2025-03-08 15:15:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 136 states have (on average 1.2058823529411764) internal successors, (164), 139 states have internal predecessors, (164), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 15:15:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2025-03-08 15:15:10,350 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 100 [2025-03-08 15:15:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:10,351 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2025-03-08 15:15:10,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2025-03-08 15:15:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-08 15:15:10,352 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:10,352 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:10,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 15:15:10,352 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:10,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1627112003, now seen corresponding path program 1 times [2025-03-08 15:15:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7977377] [2025-03-08 15:15:10,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:10,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:10,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-08 15:15:10,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-08 15:15:10,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:10,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:10,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:10,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7977377] [2025-03-08 15:15:10,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7977377] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:10,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:10,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:15:10,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99412306] [2025-03-08 15:15:10,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:10,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:15:10,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:10,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:15:10,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:15:10,395 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:10,496 INFO L93 Difference]: Finished difference Result 359 states and 472 transitions. [2025-03-08 15:15:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:15:10,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 100 [2025-03-08 15:15:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:10,498 INFO L225 Difference]: With dead ends: 359 [2025-03-08 15:15:10,498 INFO L226 Difference]: Without dead ends: 203 [2025-03-08 15:15:10,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:15:10,499 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 26 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:10,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 257 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:15:10,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2025-03-08 15:15:10,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 188. [2025-03-08 15:15:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 147 states have (on average 1.217687074829932) internal successors, (179), 150 states have internal predecessors, (179), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 15:15:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 247 transitions. [2025-03-08 15:15:10,510 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 247 transitions. Word has length 100 [2025-03-08 15:15:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:10,510 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 247 transitions. [2025-03-08 15:15:10,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:10,510 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 247 transitions. [2025-03-08 15:15:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-08 15:15:10,511 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:10,511 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:10,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 15:15:10,511 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:10,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1789446675, now seen corresponding path program 1 times [2025-03-08 15:15:10,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:10,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488961428] [2025-03-08 15:15:10,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:10,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:10,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-08 15:15:10,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-08 15:15:10,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:10,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:10,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:10,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488961428] [2025-03-08 15:15:10,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488961428] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:10,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 15:15:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367990626] [2025-03-08 15:15:10,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:10,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 15:15:10,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:10,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 15:15:10,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:15:10,671 INFO L87 Difference]: Start difference. First operand 188 states and 247 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:10,872 INFO L93 Difference]: Finished difference Result 227 states and 288 transitions. [2025-03-08 15:15:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 15:15:10,872 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 100 [2025-03-08 15:15:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:10,874 INFO L225 Difference]: With dead ends: 227 [2025-03-08 15:15:10,874 INFO L226 Difference]: Without dead ends: 225 [2025-03-08 15:15:10,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-03-08 15:15:10,874 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 51 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:10,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 704 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:15:10,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-03-08 15:15:10,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 193. [2025-03-08 15:15:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 152 states have (on average 1.2171052631578947) internal successors, (185), 155 states have internal predecessors, (185), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 15:15:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 253 transitions. [2025-03-08 15:15:10,913 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 253 transitions. Word has length 100 [2025-03-08 15:15:10,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:10,913 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 253 transitions. [2025-03-08 15:15:10,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 253 transitions. [2025-03-08 15:15:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-08 15:15:10,914 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:10,914 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:10,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 15:15:10,914 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:10,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:10,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1918529394, now seen corresponding path program 1 times [2025-03-08 15:15:10,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:10,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594943458] [2025-03-08 15:15:10,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:10,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:10,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-08 15:15:10,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-08 15:15:10,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:10,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:11,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:11,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594943458] [2025-03-08 15:15:11,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594943458] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:11,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:11,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 15:15:11,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336062407] [2025-03-08 15:15:11,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:11,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 15:15:11,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:11,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 15:15:11,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:15:11,237 INFO L87 Difference]: Start difference. First operand 193 states and 253 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:11,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:11,467 INFO L93 Difference]: Finished difference Result 231 states and 294 transitions. [2025-03-08 15:15:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 15:15:11,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 100 [2025-03-08 15:15:11,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:11,469 INFO L225 Difference]: With dead ends: 231 [2025-03-08 15:15:11,469 INFO L226 Difference]: Without dead ends: 229 [2025-03-08 15:15:11,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-03-08 15:15:11,470 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 41 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:11,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 787 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:15:11,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-03-08 15:15:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 183. [2025-03-08 15:15:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 142 states have (on average 1.2253521126760563) internal successors, (174), 145 states have internal predecessors, (174), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 15:15:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 242 transitions. [2025-03-08 15:15:11,482 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 242 transitions. Word has length 100 [2025-03-08 15:15:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:11,482 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 242 transitions. [2025-03-08 15:15:11,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 242 transitions. [2025-03-08 15:15:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-08 15:15:11,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:11,484 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:11,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 15:15:11,484 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:11,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:11,484 INFO L85 PathProgramCache]: Analyzing trace with hash -25937797, now seen corresponding path program 1 times [2025-03-08 15:15:11,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:11,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945949430] [2025-03-08 15:15:11,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:11,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:11,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 15:15:11,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 15:15:11,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:11,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:11,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:11,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945949430] [2025-03-08 15:15:11,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945949430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:11,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:11,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:15:11,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147735808] [2025-03-08 15:15:11,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:11,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:15:11,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:11,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:15:11,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:11,507 INFO L87 Difference]: Start difference. First operand 183 states and 242 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:11,548 INFO L93 Difference]: Finished difference Result 382 states and 505 transitions. [2025-03-08 15:15:11,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:15:11,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 101 [2025-03-08 15:15:11,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:11,550 INFO L225 Difference]: With dead ends: 382 [2025-03-08 15:15:11,550 INFO L226 Difference]: Without dead ends: 220 [2025-03-08 15:15:11,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:11,551 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 42 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:11,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 146 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:15:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-03-08 15:15:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 184. [2025-03-08 15:15:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 143 states have (on average 1.1888111888111887) internal successors, (170), 146 states have internal predecessors, (170), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 15:15:11,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2025-03-08 15:15:11,569 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 101 [2025-03-08 15:15:11,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:11,569 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2025-03-08 15:15:11,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2025-03-08 15:15:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-08 15:15:11,570 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:11,570 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:11,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 15:15:11,570 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:11,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:11,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1827490753, now seen corresponding path program 1 times [2025-03-08 15:15:11,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:11,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275492252] [2025-03-08 15:15:11,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:11,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:11,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 15:15:11,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 15:15:11,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:11,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-08 15:15:11,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:11,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275492252] [2025-03-08 15:15:11,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275492252] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:15:11,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:15:11,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:15:11,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155808350] [2025-03-08 15:15:11,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:15:11,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:15:11,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:11,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:15:11,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:11,610 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:11,654 INFO L93 Difference]: Finished difference Result 375 states and 484 transitions. [2025-03-08 15:15:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:15:11,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 101 [2025-03-08 15:15:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:11,656 INFO L225 Difference]: With dead ends: 375 [2025-03-08 15:15:11,656 INFO L226 Difference]: Without dead ends: 212 [2025-03-08 15:15:11,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:15:11,657 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 36 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:11,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 167 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:15:11,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-03-08 15:15:11,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 180. [2025-03-08 15:15:11,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 139 states have (on average 1.158273381294964) internal successors, (161), 142 states have internal predecessors, (161), 34 states have call successors, (34), 6 states have call predecessors, (34), 6 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 15:15:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 229 transitions. [2025-03-08 15:15:11,670 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 229 transitions. Word has length 101 [2025-03-08 15:15:11,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:11,670 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 229 transitions. [2025-03-08 15:15:11,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-08 15:15:11,670 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 229 transitions. [2025-03-08 15:15:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-08 15:15:11,671 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:15:11,672 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:11,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 15:15:11,672 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:15:11,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:15:11,672 INFO L85 PathProgramCache]: Analyzing trace with hash -36982286, now seen corresponding path program 1 times [2025-03-08 15:15:11,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:15:11,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400933189] [2025-03-08 15:15:11,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:11,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:15:11,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-08 15:15:11,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-08 15:15:11,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:11,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2025-03-08 15:15:11,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:15:11,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400933189] [2025-03-08 15:15:11,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400933189] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:15:11,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065471169] [2025-03-08 15:15:11,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:15:11,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:15:11,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:15:11,972 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) [2025-03-08 15:15:11,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 15:15:11,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-08 15:15:12,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-08 15:15:12,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:15:12,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:15:12,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 15:15:12,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:15:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-03-08 15:15:12,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:15:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2025-03-08 15:15:12,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065471169] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:15:12,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:15:12,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2025-03-08 15:15:12,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741214986] [2025-03-08 15:15:12,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:15:12,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 15:15:12,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:15:12,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 15:15:12,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-03-08 15:15:12,562 INFO L87 Difference]: Start difference. First operand 180 states and 229 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 15:15:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:15:12,956 INFO L93 Difference]: Finished difference Result 291 states and 352 transitions. [2025-03-08 15:15:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 15:15:12,957 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 103 [2025-03-08 15:15:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:15:12,957 INFO L225 Difference]: With dead ends: 291 [2025-03-08 15:15:12,957 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 15:15:12,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 195 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2025-03-08 15:15:12,958 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 181 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:15:12,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 441 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:15:12,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 15:15:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 15:15:12,959 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) [2025-03-08 15:15:12,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 15:15:12,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2025-03-08 15:15:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:15:12,959 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 15:15:12,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 15:15:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 15:15:12,959 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 15:15:12,961 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 15:15:12,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 15:15:13,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:15:13,168 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:15:13,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 15:15:16,514 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 15:15:16,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 03:15:16 BoogieIcfgContainer [2025-03-08 15:15:16,526 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 15:15:16,527 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 15:15:16,527 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 15:15:16,527 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 15:15:16,527 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:15:05" (3/4) ... [2025-03-08 15:15:16,529 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 15:15:16,532 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-03-08 15:15:16,538 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-03-08 15:15:16,538 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-08 15:15:16,538 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 15:15:16,538 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 15:15:16,608 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 15:15:16,608 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 15:15:16,608 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 15:15:16,609 INFO L158 Benchmark]: Toolchain (without parser) took 11365.66ms. Allocated memory was 142.6MB in the beginning and 587.2MB in the end (delta: 444.6MB). Free memory was 111.6MB in the beginning and 276.2MB in the end (delta: -164.6MB). Peak memory consumption was 280.8MB. Max. memory is 16.1GB. [2025-03-08 15:15:16,609 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 15:15:16,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.53ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 99.8MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 15:15:16,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.82ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 97.8MB in the end (delta: 997.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 15:15:16,610 INFO L158 Benchmark]: Boogie Preprocessor took 40.27ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 95.8MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 15:15:16,610 INFO L158 Benchmark]: IcfgBuilder took 273.29ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 78.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 15:15:16,610 INFO L158 Benchmark]: TraceAbstraction took 10736.99ms. Allocated memory was 142.6MB in the beginning and 587.2MB in the end (delta: 444.6MB). Free memory was 77.0MB in the beginning and 284.4MB in the end (delta: -207.3MB). Peak memory consumption was 320.3MB. Max. memory is 16.1GB. [2025-03-08 15:15:16,611 INFO L158 Benchmark]: Witness Printer took 81.76ms. Allocated memory is still 587.2MB. Free memory was 284.4MB in the beginning and 276.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 15:15:16,612 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.53ms. Allocated memory is still 142.6MB. Free memory was 111.6MB in the beginning and 99.8MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.82ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 97.8MB in the end (delta: 997.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.27ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 95.8MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 273.29ms. Allocated memory is still 142.6MB. Free memory was 95.8MB in the beginning and 78.0MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10736.99ms. Allocated memory was 142.6MB in the beginning and 587.2MB in the end (delta: 444.6MB). Free memory was 77.0MB in the beginning and 284.4MB in the end (delta: -207.3MB). Peak memory consumption was 320.3MB. Max. memory is 16.1GB. * Witness Printer took 81.76ms. Allocated memory is still 587.2MB. Free memory was 284.4MB in the beginning and 276.2MB 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.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: 19]: 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 2 procedures, 61 locations, 104 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 19, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 843 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 807 mSDsluCounter, 6507 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4815 mSDsCounter, 137 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2685 IncrementalHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 137 mSolverCounterUnsat, 1692 mSDtfsCounter, 2685 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 455 GetRequests, 325 SyntacticMatches, 4 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=15, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 391 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 2035 NumberOfCodeBlocks, 2035 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 2116 ConstructedInterpolants, 0 QuantifiedInterpolants, 3809 SizeOfPredicates, 8 NumberOfNonLiveVariables, 435 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 22 InterpolantComputations, 18 PerfectInterpolantSequences, 7964/8008 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: 79]: Location Invariant Derived location invariant: ((((var_1_7 == 0) && (var_1_1 == 0)) && ((var_1_3 + 1) <= var_1_2)) || ((((var_1_1 <= var_1_8) && (var_1_8 <= var_1_1)) && (0 <= 0)) && (var_1_7 <= 0))) RESULT: Ultimate proved your program to be correct! [2025-03-08 15:15:16,628 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 Writing output log to file Ultimate.log Result: TRUE