./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.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_loopvsstraightlinecode_50-1loop_file-34.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 aa1b7e3020c9e54f93d45078f4a249ca3b737cc17c725ce83b71e2a4a5a42766 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 14:42:29,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 14:42:29,427 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 14:42:29,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 14:42:29,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 14:42:29,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 14:42:29,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 14:42:29,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 14:42:29,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 14:42:29,448 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 14:42:29,448 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 14:42:29,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 14:42:29,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 14:42:29,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 14:42:29,448 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 14:42:29,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 14:42:29,449 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 14:42:29,449 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 14:42:29,449 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 14:42:29,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 14:42:29,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 14:42:29,449 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 14:42:29,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 14:42:29,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 14:42:29,449 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 14:42:29,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 14:42:29,450 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 14:42:29,450 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 14:42:29,450 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 14:42:29,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 14:42:29,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 14:42:29,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 14:42:29,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 14:42:29,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 14:42:29,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 14:42:29,450 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 14:42:29,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 14:42:29,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 14:42:29,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 14:42:29,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 14:42:29,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 14:42:29,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 14:42:29,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 14:42:29,451 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 -> aa1b7e3020c9e54f93d45078f4a249ca3b737cc17c725ce83b71e2a4a5a42766 [2025-03-08 14:42:29,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 14:42:29,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 14:42:29,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 14:42:29,735 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 14:42:29,735 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 14:42:29,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.i [2025-03-08 14:42:30,949 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50210a683/83948f46dbe54511aff2e0d7f649fdbf/FLAGf64ad0e1c [2025-03-08 14:42:31,181 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 14:42:31,181 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-34.i [2025-03-08 14:42:31,187 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50210a683/83948f46dbe54511aff2e0d7f649fdbf/FLAGf64ad0e1c [2025-03-08 14:42:31,197 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50210a683/83948f46dbe54511aff2e0d7f649fdbf [2025-03-08 14:42:31,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 14:42:31,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 14:42:31,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 14:42:31,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 14:42:31,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 14:42:31,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10fd3066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31, skipping insertion in model container [2025-03-08 14:42:31,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,222 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 14:42:31,337 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_loopvsstraightlinecode_50-1loop_file-34.i[915,928] [2025-03-08 14:42:31,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 14:42:31,403 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 14:42:31,410 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_loopvsstraightlinecode_50-1loop_file-34.i[915,928] [2025-03-08 14:42:31,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 14:42:31,441 INFO L204 MainTranslator]: Completed translation [2025-03-08 14:42:31,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31 WrapperNode [2025-03-08 14:42:31,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 14:42:31,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 14:42:31,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 14:42:31,444 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 14:42:31,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,494 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178 [2025-03-08 14:42:31,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 14:42:31,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 14:42:31,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 14:42:31,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 14:42:31,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,503 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,520 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 14:42:31,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,529 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 14:42:31,542 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 14:42:31,544 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 14:42:31,544 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 14:42:31,545 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (1/1) ... [2025-03-08 14:42:31,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 14:42:31,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 14:42:31,571 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 14:42:31,574 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 14:42:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 14:42:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 14:42:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 14:42:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 14:42:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 14:42:31,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 14:42:31,640 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 14:42:31,642 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 14:42:31,897 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L125: havoc property_#t~bitwise13#1;havoc property_#t~ite15#1;havoc property_#t~bitwise14#1;havoc property_#t~short16#1; [2025-03-08 14:42:31,926 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2025-03-08 14:42:31,927 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 14:42:31,947 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 14:42:31,948 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 14:42:31,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:42:31 BoogieIcfgContainer [2025-03-08 14:42:31,948 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 14:42:31,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 14:42:31,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 14:42:31,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 14:42:31,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 02:42:31" (1/3) ... [2025-03-08 14:42:31,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145e5674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:42:31, skipping insertion in model container [2025-03-08 14:42:31,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:42:31" (2/3) ... [2025-03-08 14:42:31,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145e5674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:42:31, skipping insertion in model container [2025-03-08 14:42:31,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:42:31" (3/3) ... [2025-03-08 14:42:31,956 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-34.i [2025-03-08 14:42:31,970 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 14:42:31,971 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_50-1loop_file-34.i that has 2 procedures, 70 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 14:42:32,018 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 14:42:32,026 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;@61cb69a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 14:42:32,026 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 14:42:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 55 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 14:42:32,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 14:42:32,035 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:32,035 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:32,036 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:32,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:32,040 INFO L85 PathProgramCache]: Analyzing trace with hash -651424101, now seen corresponding path program 1 times [2025-03-08 14:42:32,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:32,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615039243] [2025-03-08 14:42:32,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:32,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:32,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 14:42:32,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 14:42:32,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:32,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-03-08 14:42:32,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:32,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615039243] [2025-03-08 14:42:32,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615039243] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 14:42:32,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630114751] [2025-03-08 14:42:32,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:32,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 14:42:32,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 14:42:32,240 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 14:42:32,241 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 14:42:32,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 14:42:32,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 14:42:32,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:32,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:32,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 14:42:32,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 14:42:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-03-08 14:42:32,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 14:42:32,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630114751] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:32,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 14:42:32,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 14:42:32,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564305455] [2025-03-08 14:42:32,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:32,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 14:42:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:32,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 14:42:32,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 14:42:32,394 INFO L87 Difference]: Start difference. First operand has 70 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 55 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-08 14:42:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:42:32,420 INFO L93 Difference]: Finished difference Result 137 states and 222 transitions. [2025-03-08 14:42:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 14:42:32,422 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2025-03-08 14:42:32,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:42:32,426 INFO L225 Difference]: With dead ends: 137 [2025-03-08 14:42:32,426 INFO L226 Difference]: Without dead ends: 67 [2025-03-08 14:42:32,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 95 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 14:42:32,430 INFO L435 NwaCegarLoop]: 100 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, 100 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 14:42:32,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 14:42:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-03-08 14:42:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2025-03-08 14:42:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.4423076923076923) internal successors, (75), 52 states have internal predecessors, (75), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 14:42:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 101 transitions. [2025-03-08 14:42:32,457 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 101 transitions. Word has length 94 [2025-03-08 14:42:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:42:32,458 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 101 transitions. [2025-03-08 14:42:32,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-08 14:42:32,458 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 101 transitions. [2025-03-08 14:42:32,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 14:42:32,460 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:32,460 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:32,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 14:42:32,662 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 14:42:32,663 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:32,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1432194012, now seen corresponding path program 1 times [2025-03-08 14:42:32,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:32,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381169985] [2025-03-08 14:42:32,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:32,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:32,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 14:42:32,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 14:42:32,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:32,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:42:33,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381169985] [2025-03-08 14:42:33,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381169985] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:33,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:42:33,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 14:42:33,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889901874] [2025-03-08 14:42:33,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:33,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 14:42:33,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:33,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 14:42:33,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 14:42:33,057 INFO L87 Difference]: Start difference. First operand 67 states and 101 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:42:33,185 INFO L93 Difference]: Finished difference Result 225 states and 342 transitions. [2025-03-08 14:42:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 14:42:33,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 94 [2025-03-08 14:42:33,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:42:33,187 INFO L225 Difference]: With dead ends: 225 [2025-03-08 14:42:33,187 INFO L226 Difference]: Without dead ends: 161 [2025-03-08 14:42:33,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 14:42:33,188 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 129 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 14:42:33,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 307 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 14:42:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-03-08 14:42:33,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 131. [2025-03-08 14:42:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 102 states have internal predecessors, (147), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 14:42:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 199 transitions. [2025-03-08 14:42:33,215 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 199 transitions. Word has length 94 [2025-03-08 14:42:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:42:33,216 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 199 transitions. [2025-03-08 14:42:33,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:33,217 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 199 transitions. [2025-03-08 14:42:33,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 14:42:33,220 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:33,221 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:33,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 14:42:33,221 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:33,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash 591507331, now seen corresponding path program 1 times [2025-03-08 14:42:33,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:33,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255297524] [2025-03-08 14:42:33,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:33,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:33,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 14:42:33,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 14:42:33,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:33,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:42:33,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255297524] [2025-03-08 14:42:33,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255297524] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:33,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:42:33,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 14:42:33,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398395971] [2025-03-08 14:42:33,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:33,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 14:42:33,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:33,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 14:42:33,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 14:42:33,412 INFO L87 Difference]: Start difference. First operand 131 states and 199 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:42:33,624 INFO L93 Difference]: Finished difference Result 382 states and 580 transitions. [2025-03-08 14:42:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 14:42:33,625 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 95 [2025-03-08 14:42:33,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:42:33,627 INFO L225 Difference]: With dead ends: 382 [2025-03-08 14:42:33,627 INFO L226 Difference]: Without dead ends: 254 [2025-03-08 14:42:33,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 14:42:33,631 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 134 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 14:42:33,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 384 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 14:42:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2025-03-08 14:42:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 135. [2025-03-08 14:42:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 106 states have (on average 1.4245283018867925) internal successors, (151), 106 states have internal predecessors, (151), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 14:42:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 203 transitions. [2025-03-08 14:42:33,662 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 203 transitions. Word has length 95 [2025-03-08 14:42:33,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:42:33,663 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 203 transitions. [2025-03-08 14:42:33,663 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, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 203 transitions. [2025-03-08 14:42:33,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 14:42:33,666 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:33,666 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:33,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 14:42:33,667 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:33,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:33,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1218992728, now seen corresponding path program 1 times [2025-03-08 14:42:33,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:33,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618169888] [2025-03-08 14:42:33,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:33,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:33,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 14:42:33,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 14:42:33,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:33,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:42:34,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:34,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618169888] [2025-03-08 14:42:34,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618169888] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:34,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:42:34,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 14:42:34,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519052035] [2025-03-08 14:42:34,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:34,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 14:42:34,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:34,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 14:42:34,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 14:42:34,120 INFO L87 Difference]: Start difference. First operand 135 states and 203 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:42:34,327 INFO L93 Difference]: Finished difference Result 364 states and 547 transitions. [2025-03-08 14:42:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 14:42:34,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2025-03-08 14:42:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:42:34,329 INFO L225 Difference]: With dead ends: 364 [2025-03-08 14:42:34,329 INFO L226 Difference]: Without dead ends: 232 [2025-03-08 14:42:34,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 14:42:34,333 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 82 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 14:42:34,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 228 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 14:42:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2025-03-08 14:42:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 176. [2025-03-08 14:42:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 133 states have (on average 1.3984962406015038) internal successors, (186), 133 states have internal predecessors, (186), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 14:42:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 264 transitions. [2025-03-08 14:42:34,364 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 264 transitions. Word has length 96 [2025-03-08 14:42:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:42:34,364 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 264 transitions. [2025-03-08 14:42:34,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:34,365 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 264 transitions. [2025-03-08 14:42:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 14:42:34,368 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:34,368 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:34,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 14:42:34,368 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:34,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1724551353, now seen corresponding path program 1 times [2025-03-08 14:42:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:34,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677380416] [2025-03-08 14:42:34,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:34,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:34,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 14:42:34,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 14:42:34,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:34,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:42:35,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:35,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677380416] [2025-03-08 14:42:35,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677380416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:35,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:42:35,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 14:42:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136821759] [2025-03-08 14:42:35,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:35,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 14:42:35,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:35,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 14:42:35,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 14:42:35,664 INFO L87 Difference]: Start difference. First operand 176 states and 264 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:36,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:42:36,064 INFO L93 Difference]: Finished difference Result 372 states and 557 transitions. [2025-03-08 14:42:36,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 14:42:36,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2025-03-08 14:42:36,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:42:36,066 INFO L225 Difference]: With dead ends: 372 [2025-03-08 14:42:36,067 INFO L226 Difference]: Without dead ends: 240 [2025-03-08 14:42:36,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-03-08 14:42:36,068 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 148 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 14:42:36,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 287 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 14:42:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2025-03-08 14:42:36,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 182. [2025-03-08 14:42:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 139 states have (on average 1.39568345323741) internal successors, (194), 139 states have internal predecessors, (194), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 14:42:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 272 transitions. [2025-03-08 14:42:36,097 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 272 transitions. Word has length 96 [2025-03-08 14:42:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:42:36,097 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 272 transitions. [2025-03-08 14:42:36,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 272 transitions. [2025-03-08 14:42:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 14:42:36,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:36,098 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:36,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 14:42:36,098 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:36,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash 174976660, now seen corresponding path program 1 times [2025-03-08 14:42:36,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:36,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545360056] [2025-03-08 14:42:36,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:36,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:36,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 14:42:36,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 14:42:36,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:36,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:42:42,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:42,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545360056] [2025-03-08 14:42:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545360056] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:42,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:42:42,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 14:42:42,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663540419] [2025-03-08 14:42:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:42,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 14:42:42,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:42,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 14:42:42,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-08 14:42:42,164 INFO L87 Difference]: Start difference. First operand 182 states and 272 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:42:44,095 INFO L93 Difference]: Finished difference Result 586 states and 848 transitions. [2025-03-08 14:42:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 14:42:44,096 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2025-03-08 14:42:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:42:44,098 INFO L225 Difference]: With dead ends: 586 [2025-03-08 14:42:44,098 INFO L226 Difference]: Without dead ends: 437 [2025-03-08 14:42:44,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2025-03-08 14:42:44,099 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 552 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 14:42:44,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 586 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 14:42:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2025-03-08 14:42:44,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 257. [2025-03-08 14:42:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 214 states have (on average 1.397196261682243) internal successors, (299), 214 states have internal predecessors, (299), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 14:42:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 377 transitions. [2025-03-08 14:42:44,124 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 377 transitions. Word has length 96 [2025-03-08 14:42:44,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:42:44,124 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 377 transitions. [2025-03-08 14:42:44,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 377 transitions. [2025-03-08 14:42:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 14:42:44,125 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:44,125 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:44,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 14:42:44,125 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:44,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1062480341, now seen corresponding path program 1 times [2025-03-08 14:42:44,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:44,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992501588] [2025-03-08 14:42:44,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:44,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:44,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 14:42:44,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 14:42:44,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:44,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:42:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992501588] [2025-03-08 14:42:45,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992501588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:45,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:42:45,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 14:42:45,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465544199] [2025-03-08 14:42:45,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:45,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 14:42:45,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:45,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 14:42:45,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 14:42:45,674 INFO L87 Difference]: Start difference. First operand 257 states and 377 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:42:46,451 INFO L93 Difference]: Finished difference Result 560 states and 823 transitions. [2025-03-08 14:42:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 14:42:46,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 96 [2025-03-08 14:42:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:42:46,454 INFO L225 Difference]: With dead ends: 560 [2025-03-08 14:42:46,455 INFO L226 Difference]: Without dead ends: 412 [2025-03-08 14:42:46,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-03-08 14:42:46,457 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 336 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 14:42:46,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 392 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 14:42:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2025-03-08 14:42:46,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 298. [2025-03-08 14:42:46,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 255 states have (on average 1.3725490196078431) internal successors, (350), 255 states have internal predecessors, (350), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 14:42:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 428 transitions. [2025-03-08 14:42:46,482 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 428 transitions. Word has length 96 [2025-03-08 14:42:46,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:42:46,483 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 428 transitions. [2025-03-08 14:42:46,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:46,483 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 428 transitions. [2025-03-08 14:42:46,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-08 14:42:46,485 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:46,485 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:46,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 14:42:46,486 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:46,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:46,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1632477803, now seen corresponding path program 1 times [2025-03-08 14:42:46,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:46,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511346422] [2025-03-08 14:42:46,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:46,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:46,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-08 14:42:46,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-08 14:42:46,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:46,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:42:47,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:47,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511346422] [2025-03-08 14:42:47,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511346422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:47,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:42:47,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 14:42:47,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087510340] [2025-03-08 14:42:47,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:47,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 14:42:47,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:47,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 14:42:47,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 14:42:47,846 INFO L87 Difference]: Start difference. First operand 298 states and 428 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-08 14:42:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:42:48,500 INFO L93 Difference]: Finished difference Result 570 states and 818 transitions. [2025-03-08 14:42:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 14:42:48,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2025-03-08 14:42:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:42:48,503 INFO L225 Difference]: With dead ends: 570 [2025-03-08 14:42:48,503 INFO L226 Difference]: Without dead ends: 424 [2025-03-08 14:42:48,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-03-08 14:42:48,504 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 433 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 14:42:48,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 392 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 14:42:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2025-03-08 14:42:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 334. [2025-03-08 14:42:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 291 states have (on average 1.395189003436426) internal successors, (406), 291 states have internal predecessors, (406), 39 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 14:42:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 484 transitions. [2025-03-08 14:42:48,527 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 484 transitions. Word has length 96 [2025-03-08 14:42:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:42:48,527 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 484 transitions. [2025-03-08 14:42:48,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 2 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-08 14:42:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 484 transitions. [2025-03-08 14:42:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-08 14:42:48,528 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:48,529 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:48,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 14:42:48,529 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:48,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:48,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1540719902, now seen corresponding path program 1 times [2025-03-08 14:42:48,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:48,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119533060] [2025-03-08 14:42:48,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:48,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:48,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-08 14:42:48,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-08 14:42:48,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:48,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:42:50,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:50,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119533060] [2025-03-08 14:42:50,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119533060] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:50,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:42:50,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 14:42:50,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265240351] [2025-03-08 14:42:50,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:50,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 14:42:50,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:50,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 14:42:50,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-03-08 14:42:50,407 INFO L87 Difference]: Start difference. First operand 334 states and 484 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:51,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:42:51,328 INFO L93 Difference]: Finished difference Result 659 states and 950 transitions. [2025-03-08 14:42:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 14:42:51,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 97 [2025-03-08 14:42:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:42:51,331 INFO L225 Difference]: With dead ends: 659 [2025-03-08 14:42:51,331 INFO L226 Difference]: Without dead ends: 527 [2025-03-08 14:42:51,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2025-03-08 14:42:51,331 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 362 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 14:42:51,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 434 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 14:42:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2025-03-08 14:42:51,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 358. [2025-03-08 14:42:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 313 states have (on average 1.3738019169329074) internal successors, (430), 313 states have internal predecessors, (430), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 14:42:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 508 transitions. [2025-03-08 14:42:51,356 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 508 transitions. Word has length 97 [2025-03-08 14:42:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:42:51,357 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 508 transitions. [2025-03-08 14:42:51,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 508 transitions. [2025-03-08 14:42:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-08 14:42:51,358 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:51,358 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:51,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 14:42:51,358 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:51,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2009973688, now seen corresponding path program 1 times [2025-03-08 14:42:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:51,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980067258] [2025-03-08 14:42:51,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:51,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:51,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-08 14:42:51,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-08 14:42:51,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:51,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:42:53,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:53,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980067258] [2025-03-08 14:42:53,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980067258] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:53,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:42:53,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 14:42:53,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105383981] [2025-03-08 14:42:53,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:53,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 14:42:53,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:53,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 14:42:53,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-03-08 14:42:53,480 INFO L87 Difference]: Start difference. First operand 358 states and 508 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:55,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:42:55,584 INFO L93 Difference]: Finished difference Result 841 states and 1200 transitions. [2025-03-08 14:42:55,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 14:42:55,584 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 97 [2025-03-08 14:42:55,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:42:55,587 INFO L225 Difference]: With dead ends: 841 [2025-03-08 14:42:55,587 INFO L226 Difference]: Without dead ends: 625 [2025-03-08 14:42:55,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2025-03-08 14:42:55,588 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 425 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 14:42:55,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 452 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 14:42:55,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2025-03-08 14:42:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 441. [2025-03-08 14:42:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 396 states have (on average 1.3914141414141414) internal successors, (551), 396 states have internal predecessors, (551), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 14:42:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 629 transitions. [2025-03-08 14:42:55,614 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 629 transitions. Word has length 97 [2025-03-08 14:42:55,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:42:55,615 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 629 transitions. [2025-03-08 14:42:55,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:42:55,615 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 629 transitions. [2025-03-08 14:42:55,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-08 14:42:55,616 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:42:55,616 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:55,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 14:42:55,616 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:42:55,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:42:55,617 INFO L85 PathProgramCache]: Analyzing trace with hash 202519225, now seen corresponding path program 1 times [2025-03-08 14:42:55,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:42:55,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961893641] [2025-03-08 14:42:55,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:42:55,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:42:55,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-08 14:42:55,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-08 14:42:55,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:42:55,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:42:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:42:58,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:42:58,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961893641] [2025-03-08 14:42:58,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961893641] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:42:58,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:42:58,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 14:42:58,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134481434] [2025-03-08 14:42:58,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:42:58,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 14:42:58,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:42:58,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 14:42:58,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-03-08 14:42:58,803 INFO L87 Difference]: Start difference. First operand 441 states and 629 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:43:00,154 INFO L93 Difference]: Finished difference Result 830 states and 1168 transitions. [2025-03-08 14:43:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 14:43:00,155 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 97 [2025-03-08 14:43:00,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:43:00,157 INFO L225 Difference]: With dead ends: 830 [2025-03-08 14:43:00,157 INFO L226 Difference]: Without dead ends: 541 [2025-03-08 14:43:00,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2025-03-08 14:43:00,159 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 210 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 14:43:00,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 778 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 14:43:00,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2025-03-08 14:43:00,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 441. [2025-03-08 14:43:00,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 396 states have (on average 1.3888888888888888) internal successors, (550), 396 states have internal predecessors, (550), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 14:43:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 628 transitions. [2025-03-08 14:43:00,190 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 628 transitions. Word has length 97 [2025-03-08 14:43:00,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:43:00,191 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 628 transitions. [2025-03-08 14:43:00,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:00,191 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 628 transitions. [2025-03-08 14:43:00,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 14:43:00,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:43:00,192 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:00,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 14:43:00,192 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:43:00,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:43:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash -969763336, now seen corresponding path program 1 times [2025-03-08 14:43:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:43:00,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479449967] [2025-03-08 14:43:00,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:43:00,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:43:00,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 14:43:00,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 14:43:00,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:43:00,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:43:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:43:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:43:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479449967] [2025-03-08 14:43:09,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479449967] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:43:09,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:43:09,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-08 14:43:09,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738352191] [2025-03-08 14:43:09,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:43:09,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 14:43:09,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:43:09,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 14:43:09,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-03-08 14:43:09,132 INFO L87 Difference]: Start difference. First operand 441 states and 628 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:12,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:43:12,191 INFO L93 Difference]: Finished difference Result 785 states and 1112 transitions. [2025-03-08 14:43:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 14:43:12,192 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2025-03-08 14:43:12,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:43:12,194 INFO L225 Difference]: With dead ends: 785 [2025-03-08 14:43:12,194 INFO L226 Difference]: Without dead ends: 557 [2025-03-08 14:43:12,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2025-03-08 14:43:12,195 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 325 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-08 14:43:12,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 562 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-08 14:43:12,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-08 14:43:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 421. [2025-03-08 14:43:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 376 states have (on average 1.3936170212765957) internal successors, (524), 376 states have internal predecessors, (524), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 14:43:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 602 transitions. [2025-03-08 14:43:12,219 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 602 transitions. Word has length 98 [2025-03-08 14:43:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:43:12,220 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 602 transitions. [2025-03-08 14:43:12,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 602 transitions. [2025-03-08 14:43:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 14:43:12,224 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:43:12,224 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:12,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 14:43:12,224 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:43:12,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:43:12,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1517749497, now seen corresponding path program 1 times [2025-03-08 14:43:12,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:43:12,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460912757] [2025-03-08 14:43:12,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:43:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:43:12,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 14:43:12,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 14:43:12,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:43:12,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:43:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:43:14,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:43:14,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460912757] [2025-03-08 14:43:14,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460912757] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:43:14,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:43:14,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 14:43:14,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744038652] [2025-03-08 14:43:14,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:43:14,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 14:43:14,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:43:14,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 14:43:14,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 14:43:14,184 INFO L87 Difference]: Start difference. First operand 421 states and 602 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:43:14,975 INFO L93 Difference]: Finished difference Result 717 states and 1016 transitions. [2025-03-08 14:43:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 14:43:14,975 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2025-03-08 14:43:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:43:14,977 INFO L225 Difference]: With dead ends: 717 [2025-03-08 14:43:14,977 INFO L226 Difference]: Without dead ends: 485 [2025-03-08 14:43:14,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-03-08 14:43:14,978 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 240 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 14:43:14,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 409 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 14:43:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2025-03-08 14:43:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 411. [2025-03-08 14:43:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 366 states have (on average 1.3934426229508197) internal successors, (510), 366 states have internal predecessors, (510), 39 states have call successors, (39), 5 states have call predecessors, (39), 5 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2025-03-08 14:43:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 588 transitions. [2025-03-08 14:43:14,999 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 588 transitions. Word has length 98 [2025-03-08 14:43:14,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:43:14,999 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 588 transitions. [2025-03-08 14:43:14,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:14,999 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 588 transitions. [2025-03-08 14:43:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 14:43:15,000 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:43:15,000 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:15,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 14:43:15,000 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:43:15,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:43:15,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1643484813, now seen corresponding path program 1 times [2025-03-08 14:43:15,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:43:15,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236955117] [2025-03-08 14:43:15,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:43:15,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:43:15,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 14:43:15,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 14:43:15,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:43:15,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:43:16,977 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:43:16,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:43:16,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236955117] [2025-03-08 14:43:16,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236955117] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:43:16,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:43:16,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 14:43:16,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784397947] [2025-03-08 14:43:16,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:43:16,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 14:43:16,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:43:16,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 14:43:16,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-03-08 14:43:16,979 INFO L87 Difference]: Start difference. First operand 411 states and 588 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:43:19,402 INFO L93 Difference]: Finished difference Result 1064 states and 1530 transitions. [2025-03-08 14:43:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 14:43:19,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2025-03-08 14:43:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:43:19,405 INFO L225 Difference]: With dead ends: 1064 [2025-03-08 14:43:19,405 INFO L226 Difference]: Without dead ends: 846 [2025-03-08 14:43:19,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2025-03-08 14:43:19,406 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 604 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 14:43:19,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 487 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 14:43:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2025-03-08 14:43:19,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 629. [2025-03-08 14:43:19,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 554 states have (on average 1.3862815884476534) internal successors, (768), 554 states have internal predecessors, (768), 65 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2025-03-08 14:43:19,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 898 transitions. [2025-03-08 14:43:19,445 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 898 transitions. Word has length 98 [2025-03-08 14:43:19,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:43:19,445 INFO L471 AbstractCegarLoop]: Abstraction has 629 states and 898 transitions. [2025-03-08 14:43:19,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 898 transitions. [2025-03-08 14:43:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 14:43:19,446 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:43:19,446 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:19,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 14:43:19,447 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:43:19,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:43:19,447 INFO L85 PathProgramCache]: Analyzing trace with hash -755981132, now seen corresponding path program 1 times [2025-03-08 14:43:19,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:43:19,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098231461] [2025-03-08 14:43:19,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:43:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:43:19,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 14:43:19,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 14:43:19,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:43:19,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:43:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:43:24,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:43:24,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098231461] [2025-03-08 14:43:24,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098231461] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:43:24,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:43:24,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-08 14:43:24,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026255644] [2025-03-08 14:43:24,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:43:24,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 14:43:24,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:43:24,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 14:43:24,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-08 14:43:24,123 INFO L87 Difference]: Start difference. First operand 629 states and 898 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:28,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:43:28,027 INFO L93 Difference]: Finished difference Result 1183 states and 1694 transitions. [2025-03-08 14:43:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 14:43:28,027 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2025-03-08 14:43:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:43:28,030 INFO L225 Difference]: With dead ends: 1183 [2025-03-08 14:43:28,030 INFO L226 Difference]: Without dead ends: 763 [2025-03-08 14:43:28,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2025-03-08 14:43:28,033 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 319 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-08 14:43:28,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 569 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-08 14:43:28,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2025-03-08 14:43:28,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 669. [2025-03-08 14:43:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 594 states have (on average 1.3804713804713804) internal successors, (820), 594 states have internal predecessors, (820), 65 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2025-03-08 14:43:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 950 transitions. [2025-03-08 14:43:28,082 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 950 transitions. Word has length 98 [2025-03-08 14:43:28,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:43:28,083 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 950 transitions. [2025-03-08 14:43:28,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:28,083 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 950 transitions. [2025-03-08 14:43:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 14:43:28,084 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:43:28,084 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:28,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 14:43:28,084 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:43:28,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:43:28,084 INFO L85 PathProgramCache]: Analyzing trace with hash 844028020, now seen corresponding path program 1 times [2025-03-08 14:43:28,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:43:28,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057585671] [2025-03-08 14:43:28,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:43:28,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:43:28,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 14:43:28,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 14:43:28,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:43:28,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:43:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:43:32,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:43:32,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057585671] [2025-03-08 14:43:32,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057585671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:43:32,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:43:32,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 14:43:32,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476550489] [2025-03-08 14:43:32,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:43:32,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 14:43:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:43:32,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 14:43:32,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-03-08 14:43:32,141 INFO L87 Difference]: Start difference. First operand 669 states and 950 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:43:33,675 INFO L93 Difference]: Finished difference Result 1366 states and 1935 transitions. [2025-03-08 14:43:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 14:43:33,676 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2025-03-08 14:43:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:43:33,679 INFO L225 Difference]: With dead ends: 1366 [2025-03-08 14:43:33,679 INFO L226 Difference]: Without dead ends: 875 [2025-03-08 14:43:33,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2025-03-08 14:43:33,681 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 317 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 14:43:33,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 467 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 14:43:33,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2025-03-08 14:43:33,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 699. [2025-03-08 14:43:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 624 states have (on average 1.373397435897436) internal successors, (857), 624 states have internal predecessors, (857), 65 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2025-03-08 14:43:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 987 transitions. [2025-03-08 14:43:33,715 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 987 transitions. Word has length 98 [2025-03-08 14:43:33,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:43:33,716 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 987 transitions. [2025-03-08 14:43:33,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 987 transitions. [2025-03-08 14:43:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 14:43:33,717 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:43:33,717 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:33,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 14:43:33,717 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:43:33,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:43:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1731531701, now seen corresponding path program 1 times [2025-03-08 14:43:33,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:43:33,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70621244] [2025-03-08 14:43:33,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:43:33,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:43:33,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 14:43:33,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 14:43:33,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:43:33,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 14:43:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2025-03-08 14:43:38,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 14:43:38,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70621244] [2025-03-08 14:43:38,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70621244] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 14:43:38,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 14:43:38,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-08 14:43:38,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571276848] [2025-03-08 14:43:38,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 14:43:38,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 14:43:38,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 14:43:38,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 14:43:38,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2025-03-08 14:43:38,058 INFO L87 Difference]: Start difference. First operand 699 states and 987 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 14:43:41,667 INFO L93 Difference]: Finished difference Result 1317 states and 1833 transitions. [2025-03-08 14:43:41,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 14:43:41,670 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 98 [2025-03-08 14:43:41,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 14:43:41,673 INFO L225 Difference]: With dead ends: 1317 [2025-03-08 14:43:41,673 INFO L226 Difference]: Without dead ends: 905 [2025-03-08 14:43:41,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2025-03-08 14:43:41,674 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 442 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-08 14:43:41,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 552 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-08 14:43:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2025-03-08 14:43:41,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 721. [2025-03-08 14:43:41,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 646 states have (on average 1.3715170278637772) internal successors, (886), 646 states have internal predecessors, (886), 65 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2025-03-08 14:43:41,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1016 transitions. [2025-03-08 14:43:41,711 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1016 transitions. Word has length 98 [2025-03-08 14:43:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 14:43:41,711 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1016 transitions. [2025-03-08 14:43:41,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-08 14:43:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1016 transitions. [2025-03-08 14:43:41,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-08 14:43:41,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 14:43:41,713 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:41,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 14:43:41,713 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 14:43:41,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 14:43:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1781949221, now seen corresponding path program 1 times [2025-03-08 14:43:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 14:43:41,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733372424] [2025-03-08 14:43:41,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 14:43:41,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 14:43:41,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-08 14:43:41,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 14:43:41,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 14:43:41,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat