./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_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 2b329d9832ec99d9ffbb7796b225f0eac74b08ac18938b07d93f1b80cf8ae2f9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 23:42:24,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 23:42:24,079 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 23:42:24,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 23:42:24,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 23:42:24,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 23:42:24,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 23:42:24,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 23:42:24,098 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 23:42:24,098 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 23:42:24,098 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 23:42:24,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 23:42:24,099 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 23:42:24,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 23:42:24,099 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 23:42:24,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 23:42:24,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 23:42:24,099 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 23:42:24,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 23:42:24,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 23:42:24,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 23:42:24,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 23:42:24,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 23:42:24,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 23:42:24,100 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 23:42:24,100 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 23:42:24,100 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 23:42:24,100 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 23:42:24,100 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 23:42:24,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 23:42:24,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:42:24,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 23:42:24,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 23:42:24,102 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 -> 2b329d9832ec99d9ffbb7796b225f0eac74b08ac18938b07d93f1b80cf8ae2f9 [2025-03-16 23:42:24,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 23:42:24,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 23:42:24,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 23:42:24,346 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 23:42:24,346 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 23:42:24,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2025-03-16 23:42:25,568 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f89d598b/8355e7a095f342d7a3125ca28186925c/FLAGe1fd8bb68 [2025-03-16 23:42:25,875 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 23:42:25,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2025-03-16 23:42:25,887 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f89d598b/8355e7a095f342d7a3125ca28186925c/FLAGe1fd8bb68 [2025-03-16 23:42:26,151 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f89d598b/8355e7a095f342d7a3125ca28186925c [2025-03-16 23:42:26,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 23:42:26,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 23:42:26,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 23:42:26,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 23:42:26,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 23:42:26,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c1205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26, skipping insertion in model container [2025-03-16 23:42:26,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,184 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 23:42:26,293 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_fillercode_fillercodesize_ps-cn-100_file-34.i[916,929] [2025-03-16 23:42:26,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:42:26,398 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 23:42:26,407 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_fillercode_fillercodesize_ps-cn-100_file-34.i[916,929] [2025-03-16 23:42:26,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:42:26,463 INFO L204 MainTranslator]: Completed translation [2025-03-16 23:42:26,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26 WrapperNode [2025-03-16 23:42:26,464 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 23:42:26,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 23:42:26,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 23:42:26,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 23:42:26,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,481 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,517 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 315 [2025-03-16 23:42:26,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 23:42:26,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 23:42:26,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 23:42:26,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 23:42:26,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,557 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 23:42:26,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,557 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,567 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,571 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,578 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,587 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 23:42:26,589 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 23:42:26,590 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 23:42:26,590 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 23:42:26,590 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (1/1) ... [2025-03-16 23:42:26,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:42:26,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:42:26,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 23:42:26,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 23:42:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 23:42:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 23:42:26,639 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 23:42:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 23:42:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 23:42:26,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 23:42:26,701 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 23:42:26,703 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 23:42:27,170 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L256: havoc property_#t~bitwise30#1;havoc property_#t~ite32#1;havoc property_#t~bitwise31#1;havoc property_#t~short33#1; [2025-03-16 23:42:27,211 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2025-03-16 23:42:27,211 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 23:42:27,244 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 23:42:27,245 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 23:42:27,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:42:27 BoogieIcfgContainer [2025-03-16 23:42:27,245 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 23:42:27,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 23:42:27,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 23:42:27,251 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 23:42:27,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 11:42:26" (1/3) ... [2025-03-16 23:42:27,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bb32c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:42:27, skipping insertion in model container [2025-03-16 23:42:27,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:42:26" (2/3) ... [2025-03-16 23:42:27,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bb32c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:42:27, skipping insertion in model container [2025-03-16 23:42:27,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:42:27" (3/3) ... [2025-03-16 23:42:27,253 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-34.i [2025-03-16 23:42:27,265 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 23:42:27,268 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-34.i that has 2 procedures, 132 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 23:42:27,307 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 23:42:27,314 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;@3698b14f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 23:42:27,315 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 23:42:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 85 states have (on average 1.4941176470588236) internal successors, (127), 86 states have internal predecessors, (127), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-16 23:42:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2025-03-16 23:42:27,331 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:42:27,332 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:42:27,332 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:42:27,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:42:27,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1559810467, now seen corresponding path program 1 times [2025-03-16 23:42:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:42:27,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545584616] [2025-03-16 23:42:27,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:27,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:42:27,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 273 statements into 1 equivalence classes. [2025-03-16 23:42:27,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 273 of 273 statements. [2025-03-16 23:42:27,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:27,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:42:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-03-16 23:42:27,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:42:27,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545584616] [2025-03-16 23:42:27,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545584616] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 23:42:27,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522006281] [2025-03-16 23:42:27,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:27,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 23:42:27,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:42:27,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 23:42:27,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 23:42:27,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 273 statements into 1 equivalence classes. [2025-03-16 23:42:27,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 273 of 273 statements. [2025-03-16 23:42:27,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:27,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:42:27,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 23:42:27,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 23:42:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-03-16 23:42:27,889 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 23:42:27,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522006281] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:42:27,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 23:42:27,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-16 23:42:27,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217070711] [2025-03-16 23:42:27,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:42:27,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 23:42:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:42:27,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 23:42:27,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:42:27,915 INFO L87 Difference]: Start difference. First operand has 132 states, 85 states have (on average 1.4941176470588236) internal successors, (127), 86 states have internal predecessors, (127), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-16 23:42:27,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:42:27,971 INFO L93 Difference]: Finished difference Result 261 states and 472 transitions. [2025-03-16 23:42:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 23:42:27,973 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 273 [2025-03-16 23:42:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:42:27,979 INFO L225 Difference]: With dead ends: 261 [2025-03-16 23:42:27,979 INFO L226 Difference]: Without dead ends: 130 [2025-03-16 23:42:27,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:42:27,986 INFO L435 NwaCegarLoop]: 207 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, 207 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 [2025-03-16 23:42:27,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 207 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:42:28,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-03-16 23:42:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2025-03-16 23:42:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 84 states have internal predecessors, (123), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-16 23:42:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 211 transitions. [2025-03-16 23:42:28,030 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 211 transitions. Word has length 273 [2025-03-16 23:42:28,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:42:28,031 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 211 transitions. [2025-03-16 23:42:28,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-16 23:42:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 211 transitions. [2025-03-16 23:42:28,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2025-03-16 23:42:28,035 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:42:28,036 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:42:28,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 23:42:28,236 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 [2025-03-16 23:42:28,237 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:42:28,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:42:28,238 INFO L85 PathProgramCache]: Analyzing trace with hash 696651743, now seen corresponding path program 1 times [2025-03-16 23:42:28,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:42:28,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133236172] [2025-03-16 23:42:28,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:28,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:42:28,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 273 statements into 1 equivalence classes. [2025-03-16 23:42:28,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 273 of 273 statements. [2025-03-16 23:42:28,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:28,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:42:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:42:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:42:28,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133236172] [2025-03-16 23:42:28,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133236172] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:42:28,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:42:28,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 23:42:28,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510431172] [2025-03-16 23:42:28,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:42:28,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 23:42:28,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:42:28,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 23:42:28,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 23:42:28,836 INFO L87 Difference]: Start difference. First operand 130 states and 211 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:29,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:42:29,118 INFO L93 Difference]: Finished difference Result 418 states and 676 transitions. [2025-03-16 23:42:29,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 23:42:29,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 273 [2025-03-16 23:42:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:42:29,121 INFO L225 Difference]: With dead ends: 418 [2025-03-16 23:42:29,121 INFO L226 Difference]: Without dead ends: 289 [2025-03-16 23:42:29,124 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 [2025-03-16 23:42:29,124 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 201 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 23:42:29,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 641 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 23:42:29,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2025-03-16 23:42:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 259. [2025-03-16 23:42:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 168 states have (on average 1.4583333333333333) internal successors, (245), 168 states have internal predecessors, (245), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-03-16 23:42:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 421 transitions. [2025-03-16 23:42:29,171 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 421 transitions. Word has length 273 [2025-03-16 23:42:29,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:42:29,172 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 421 transitions. [2025-03-16 23:42:29,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 421 transitions. [2025-03-16 23:42:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2025-03-16 23:42:29,178 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:42:29,179 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:42:29,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 23:42:29,179 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:42:29,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:42:29,180 INFO L85 PathProgramCache]: Analyzing trace with hash -442063524, now seen corresponding path program 1 times [2025-03-16 23:42:29,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:42:29,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346278844] [2025-03-16 23:42:29,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:29,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:42:29,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 274 statements into 1 equivalence classes. [2025-03-16 23:42:29,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 274 of 274 statements. [2025-03-16 23:42:29,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:29,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:42:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:42:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:42:29,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346278844] [2025-03-16 23:42:29,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346278844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:42:29,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:42:29,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 23:42:29,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862717949] [2025-03-16 23:42:29,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:42:29,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 23:42:29,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:42:29,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 23:42:29,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 23:42:29,574 INFO L87 Difference]: Start difference. First operand 259 states and 421 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:42:30,023 INFO L93 Difference]: Finished difference Result 770 states and 1250 transitions. [2025-03-16 23:42:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 23:42:30,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 274 [2025-03-16 23:42:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:42:30,029 INFO L225 Difference]: With dead ends: 770 [2025-03-16 23:42:30,029 INFO L226 Difference]: Without dead ends: 512 [2025-03-16 23:42:30,031 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 [2025-03-16 23:42:30,031 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 237 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 23:42:30,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 814 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 23:42:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2025-03-16 23:42:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 263. [2025-03-16 23:42:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 172 states have (on average 1.447674418604651) internal successors, (249), 172 states have internal predecessors, (249), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-03-16 23:42:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 425 transitions. [2025-03-16 23:42:30,114 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 425 transitions. Word has length 274 [2025-03-16 23:42:30,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:42:30,114 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 425 transitions. [2025-03-16 23:42:30,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 425 transitions. [2025-03-16 23:42:30,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2025-03-16 23:42:30,117 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:42:30,119 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:42:30,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 23:42:30,120 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:42:30,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:42:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash -756932708, now seen corresponding path program 1 times [2025-03-16 23:42:30,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:42:30,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407715528] [2025-03-16 23:42:30,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:30,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:42:30,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 275 statements into 1 equivalence classes. [2025-03-16 23:42:30,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 275 of 275 statements. [2025-03-16 23:42:30,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:30,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:42:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:42:31,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:42:31,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407715528] [2025-03-16 23:42:31,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407715528] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:42:31,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:42:31,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 23:42:31,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528548641] [2025-03-16 23:42:31,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:42:31,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 23:42:31,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:42:31,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 23:42:31,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 23:42:31,841 INFO L87 Difference]: Start difference. First operand 263 states and 425 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:32,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:42:32,320 INFO L93 Difference]: Finished difference Result 751 states and 1198 transitions. [2025-03-16 23:42:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 23:42:32,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 275 [2025-03-16 23:42:32,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:42:32,324 INFO L225 Difference]: With dead ends: 751 [2025-03-16 23:42:32,324 INFO L226 Difference]: Without dead ends: 489 [2025-03-16 23:42:32,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-16 23:42:32,326 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 253 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 23:42:32,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 745 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 23:42:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2025-03-16 23:42:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 375. [2025-03-16 23:42:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 239 states have (on average 1.4393305439330544) internal successors, (344), 239 states have internal predecessors, (344), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2025-03-16 23:42:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 608 transitions. [2025-03-16 23:42:32,383 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 608 transitions. Word has length 275 [2025-03-16 23:42:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:42:32,385 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 608 transitions. [2025-03-16 23:42:32,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 608 transitions. [2025-03-16 23:42:32,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2025-03-16 23:42:32,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:42:32,389 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:42:32,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 23:42:32,389 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:42:32,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:42:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1988459895, now seen corresponding path program 1 times [2025-03-16 23:42:32,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:42:32,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278855427] [2025-03-16 23:42:32,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:32,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:42:32,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 275 statements into 1 equivalence classes. [2025-03-16 23:42:32,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 275 of 275 statements. [2025-03-16 23:42:32,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:32,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:42:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:42:35,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:42:35,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278855427] [2025-03-16 23:42:35,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278855427] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:42:35,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:42:35,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-16 23:42:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217728649] [2025-03-16 23:42:35,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:42:35,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 23:42:35,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:42:35,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 23:42:35,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-03-16 23:42:35,730 INFO L87 Difference]: Start difference. First operand 375 states and 608 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:42:37,887 INFO L93 Difference]: Finished difference Result 885 states and 1382 transitions. [2025-03-16 23:42:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 23:42:37,887 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 275 [2025-03-16 23:42:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:42:37,893 INFO L225 Difference]: With dead ends: 885 [2025-03-16 23:42:37,893 INFO L226 Difference]: Without dead ends: 623 [2025-03-16 23:42:37,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2025-03-16 23:42:37,897 INFO L435 NwaCegarLoop]: 203 mSDtfsCounter, 413 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-16 23:42:37,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1148 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-16 23:42:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2025-03-16 23:42:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 462. [2025-03-16 23:42:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 314 states have (on average 1.4267515923566878) internal successors, (448), 316 states have internal predecessors, (448), 142 states have call successors, (142), 5 states have call predecessors, (142), 5 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2025-03-16 23:42:37,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 732 transitions. [2025-03-16 23:42:37,944 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 732 transitions. Word has length 275 [2025-03-16 23:42:37,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:42:37,944 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 732 transitions. [2025-03-16 23:42:37,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:37,944 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 732 transitions. [2025-03-16 23:42:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2025-03-16 23:42:37,949 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:42:37,949 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:42:37,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 23:42:37,949 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:42:37,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:42:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1419003720, now seen corresponding path program 1 times [2025-03-16 23:42:37,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:42:37,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552841040] [2025-03-16 23:42:37,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:37,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:42:37,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 275 statements into 1 equivalence classes. [2025-03-16 23:42:38,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 275 of 275 statements. [2025-03-16 23:42:38,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:38,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:42:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:42:39,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:42:39,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552841040] [2025-03-16 23:42:39,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552841040] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:42:39,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:42:39,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-16 23:42:39,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39516385] [2025-03-16 23:42:39,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:42:39,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 23:42:39,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:42:39,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 23:42:39,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-16 23:42:39,998 INFO L87 Difference]: Start difference. First operand 462 states and 732 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:42:41,400 INFO L93 Difference]: Finished difference Result 1138 states and 1750 transitions. [2025-03-16 23:42:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 23:42:41,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 275 [2025-03-16 23:42:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:42:41,406 INFO L225 Difference]: With dead ends: 1138 [2025-03-16 23:42:41,407 INFO L226 Difference]: Without dead ends: 793 [2025-03-16 23:42:41,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-03-16 23:42:41,409 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 429 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-16 23:42:41,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 955 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-16 23:42:41,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2025-03-16 23:42:41,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 513. [2025-03-16 23:42:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 365 states have (on average 1.4219178082191781) internal successors, (519), 367 states have internal predecessors, (519), 142 states have call successors, (142), 5 states have call predecessors, (142), 5 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2025-03-16 23:42:41,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 803 transitions. [2025-03-16 23:42:41,458 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 803 transitions. Word has length 275 [2025-03-16 23:42:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:42:41,459 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 803 transitions. [2025-03-16 23:42:41,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 803 transitions. [2025-03-16 23:42:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2025-03-16 23:42:41,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:42:41,461 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:42:41,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 23:42:41,462 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:42:41,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:42:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash 181005432, now seen corresponding path program 1 times [2025-03-16 23:42:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:42:41,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796997694] [2025-03-16 23:42:41,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:42:41,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 275 statements into 1 equivalence classes. [2025-03-16 23:42:41,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 275 of 275 statements. [2025-03-16 23:42:41,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:41,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:42:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:42:44,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:42:44,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796997694] [2025-03-16 23:42:44,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796997694] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:42:44,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:42:44,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-16 23:42:44,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72693263] [2025-03-16 23:42:44,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:42:44,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-16 23:42:44,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:42:44,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-16 23:42:44,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-16 23:42:44,128 INFO L87 Difference]: Start difference. First operand 513 states and 803 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:45,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:42:45,518 INFO L93 Difference]: Finished difference Result 1242 states and 1883 transitions. [2025-03-16 23:42:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 23:42:45,519 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 275 [2025-03-16 23:42:45,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:42:45,523 INFO L225 Difference]: With dead ends: 1242 [2025-03-16 23:42:45,523 INFO L226 Difference]: Without dead ends: 842 [2025-03-16 23:42:45,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2025-03-16 23:42:45,525 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 407 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-16 23:42:45,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1150 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-16 23:42:45,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2025-03-16 23:42:45,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 686. [2025-03-16 23:42:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 538 states have (on average 1.429368029739777) internal successors, (769), 540 states have internal predecessors, (769), 142 states have call successors, (142), 5 states have call predecessors, (142), 5 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2025-03-16 23:42:45,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1053 transitions. [2025-03-16 23:42:45,570 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1053 transitions. Word has length 275 [2025-03-16 23:42:45,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:42:45,571 INFO L471 AbstractCegarLoop]: Abstraction has 686 states and 1053 transitions. [2025-03-16 23:42:45,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:45,571 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1053 transitions. [2025-03-16 23:42:45,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2025-03-16 23:42:45,572 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:42:45,573 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:42:45,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 23:42:45,573 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:42:45,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:42:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1262491333, now seen corresponding path program 1 times [2025-03-16 23:42:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:42:45,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490278830] [2025-03-16 23:42:45,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:45,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:42:45,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 275 statements into 1 equivalence classes. [2025-03-16 23:42:45,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 275 of 275 statements. [2025-03-16 23:42:45,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:45,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:42:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:42:45,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:42:45,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490278830] [2025-03-16 23:42:45,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490278830] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:42:45,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:42:45,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 23:42:45,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146364103] [2025-03-16 23:42:45,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:42:45,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 23:42:45,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:42:45,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 23:42:45,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 23:42:45,876 INFO L87 Difference]: Start difference. First operand 686 states and 1053 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:42:46,162 INFO L93 Difference]: Finished difference Result 1143 states and 1758 transitions. [2025-03-16 23:42:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 23:42:46,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 275 [2025-03-16 23:42:46,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:42:46,169 INFO L225 Difference]: With dead ends: 1143 [2025-03-16 23:42:46,169 INFO L226 Difference]: Without dead ends: 690 [2025-03-16 23:42:46,170 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 [2025-03-16 23:42:46,171 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 153 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 23:42:46,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 562 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 23:42:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2025-03-16 23:42:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 636. [2025-03-16 23:42:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 488 states have (on average 1.401639344262295) internal successors, (684), 490 states have internal predecessors, (684), 142 states have call successors, (142), 5 states have call predecessors, (142), 5 states have return successors, (142), 140 states have call predecessors, (142), 142 states have call successors, (142) [2025-03-16 23:42:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 968 transitions. [2025-03-16 23:42:46,223 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 968 transitions. Word has length 275 [2025-03-16 23:42:46,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:42:46,224 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 968 transitions. [2025-03-16 23:42:46,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:46,224 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 968 transitions. [2025-03-16 23:42:46,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2025-03-16 23:42:46,226 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:42:46,227 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:42:46,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 23:42:46,227 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:42:46,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:42:46,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1477925718, now seen corresponding path program 1 times [2025-03-16 23:42:46,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:42:46,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792495818] [2025-03-16 23:42:46,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:46,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:42:46,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 275 statements into 1 equivalence classes. [2025-03-16 23:42:46,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 275 of 275 statements. [2025-03-16 23:42:46,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:46,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:42:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:42:47,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:42:47,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792495818] [2025-03-16 23:42:47,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792495818] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:42:47,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:42:47,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-16 23:42:47,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643855088] [2025-03-16 23:42:47,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:42:47,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-16 23:42:47,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:42:47,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-16 23:42:47,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-16 23:42:47,905 INFO L87 Difference]: Start difference. First operand 636 states and 968 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:49,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:42:49,704 INFO L93 Difference]: Finished difference Result 1070 states and 1634 transitions. [2025-03-16 23:42:49,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-16 23:42:49,705 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 275 [2025-03-16 23:42:49,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:42:49,709 INFO L225 Difference]: With dead ends: 1070 [2025-03-16 23:42:49,709 INFO L226 Difference]: Without dead ends: 895 [2025-03-16 23:42:49,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-03-16 23:42:49,710 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 608 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 23:42:49,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1755 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 23:42:49,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2025-03-16 23:42:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 790. [2025-03-16 23:42:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 597 states have (on average 1.4020100502512562) internal successors, (837), 599 states have internal predecessors, (837), 186 states have call successors, (186), 6 states have call predecessors, (186), 6 states have return successors, (186), 184 states have call predecessors, (186), 186 states have call successors, (186) [2025-03-16 23:42:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1209 transitions. [2025-03-16 23:42:49,758 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1209 transitions. Word has length 275 [2025-03-16 23:42:49,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:42:49,759 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 1209 transitions. [2025-03-16 23:42:49,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:42:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1209 transitions. [2025-03-16 23:42:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2025-03-16 23:42:49,760 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:42:49,760 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:42:49,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 23:42:49,761 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:42:49,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:42:49,761 INFO L85 PathProgramCache]: Analyzing trace with hash 585924659, now seen corresponding path program 1 times [2025-03-16 23:42:49,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:42:49,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042869597] [2025-03-16 23:42:49,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:42:49,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:42:49,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 276 statements into 1 equivalence classes. [2025-03-16 23:42:49,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 276 of 276 statements. [2025-03-16 23:42:49,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:42:49,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:43:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:43:10,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:43:10,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042869597] [2025-03-16 23:43:10,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042869597] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:43:10,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:43:10,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-16 23:43:10,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890456815] [2025-03-16 23:43:10,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:43:10,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-16 23:43:10,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:43:10,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-16 23:43:10,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2025-03-16 23:43:10,751 INFO L87 Difference]: Start difference. First operand 790 states and 1209 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:43:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:43:12,630 INFO L93 Difference]: Finished difference Result 1563 states and 2362 transitions. [2025-03-16 23:43:12,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 23:43:12,631 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 276 [2025-03-16 23:43:12,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:43:12,636 INFO L225 Difference]: With dead ends: 1563 [2025-03-16 23:43:12,636 INFO L226 Difference]: Without dead ends: 930 [2025-03-16 23:43:12,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2025-03-16 23:43:12,639 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 369 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 1653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 23:43:12,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1850 Invalid, 1653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1506 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 23:43:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2025-03-16 23:43:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 811. [2025-03-16 23:43:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 618 states have (on average 1.396440129449838) internal successors, (863), 620 states have internal predecessors, (863), 186 states have call successors, (186), 6 states have call predecessors, (186), 6 states have return successors, (186), 184 states have call predecessors, (186), 186 states have call successors, (186) [2025-03-16 23:43:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1235 transitions. [2025-03-16 23:43:12,707 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1235 transitions. Word has length 276 [2025-03-16 23:43:12,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:43:12,707 INFO L471 AbstractCegarLoop]: Abstraction has 811 states and 1235 transitions. [2025-03-16 23:43:12,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:43:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1235 transitions. [2025-03-16 23:43:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2025-03-16 23:43:12,709 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:43:12,709 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:43:12,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 23:43:12,710 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:43:12,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:43:12,711 INFO L85 PathProgramCache]: Analyzing trace with hash 75390482, now seen corresponding path program 1 times [2025-03-16 23:43:12,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:43:12,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847913554] [2025-03-16 23:43:12,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:43:12,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:43:12,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 276 statements into 1 equivalence classes. [2025-03-16 23:43:12,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 276 of 276 statements. [2025-03-16 23:43:12,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:43:12,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:43:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:43:33,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:43:33,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847913554] [2025-03-16 23:43:33,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847913554] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:43:33,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:43:33,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-16 23:43:33,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365536735] [2025-03-16 23:43:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:43:33,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-16 23:43:33,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:43:33,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-16 23:43:33,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2025-03-16 23:43:33,326 INFO L87 Difference]: Start difference. First operand 811 states and 1235 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:43:34,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:43:34,755 INFO L93 Difference]: Finished difference Result 1203 states and 1821 transitions. [2025-03-16 23:43:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 23:43:34,756 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 276 [2025-03-16 23:43:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:43:34,760 INFO L225 Difference]: With dead ends: 1203 [2025-03-16 23:43:34,760 INFO L226 Difference]: Without dead ends: 900 [2025-03-16 23:43:34,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2025-03-16 23:43:34,762 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 301 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:43:34,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1932 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-16 23:43:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2025-03-16 23:43:34,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 807. [2025-03-16 23:43:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 614 states have (on average 1.3973941368078175) internal successors, (858), 616 states have internal predecessors, (858), 186 states have call successors, (186), 6 states have call predecessors, (186), 6 states have return successors, (186), 184 states have call predecessors, (186), 186 states have call successors, (186) [2025-03-16 23:43:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1230 transitions. [2025-03-16 23:43:34,815 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1230 transitions. Word has length 276 [2025-03-16 23:43:34,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:43:34,816 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1230 transitions. [2025-03-16 23:43:34,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:43:34,816 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1230 transitions. [2025-03-16 23:43:34,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2025-03-16 23:43:34,818 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:43:34,819 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:43:34,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 23:43:34,819 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:43:34,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:43:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1924125336, now seen corresponding path program 1 times [2025-03-16 23:43:34,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:43:34,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117393527] [2025-03-16 23:43:34,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:43:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:43:34,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 276 statements into 1 equivalence classes. [2025-03-16 23:43:34,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 276 of 276 statements. [2025-03-16 23:43:34,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:43:34,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:43:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:43:36,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:43:36,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117393527] [2025-03-16 23:43:36,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117393527] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:43:36,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:43:36,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-16 23:43:36,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774204238] [2025-03-16 23:43:36,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:43:36,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-16 23:43:36,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:43:36,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-16 23:43:36,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-16 23:43:36,601 INFO L87 Difference]: Start difference. First operand 807 states and 1230 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:43:37,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:43:37,590 INFO L93 Difference]: Finished difference Result 1519 states and 2308 transitions. [2025-03-16 23:43:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 23:43:37,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 276 [2025-03-16 23:43:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:43:37,597 INFO L225 Difference]: With dead ends: 1519 [2025-03-16 23:43:37,598 INFO L226 Difference]: Without dead ends: 1046 [2025-03-16 23:43:37,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2025-03-16 23:43:37,600 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 405 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 23:43:37,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 796 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 23:43:37,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2025-03-16 23:43:37,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 761. [2025-03-16 23:43:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 577 states have (on average 1.3847487001733103) internal successors, (799), 577 states have internal predecessors, (799), 176 states have call successors, (176), 7 states have call predecessors, (176), 7 states have return successors, (176), 176 states have call predecessors, (176), 176 states have call successors, (176) [2025-03-16 23:43:37,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1151 transitions. [2025-03-16 23:43:37,653 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1151 transitions. Word has length 276 [2025-03-16 23:43:37,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:43:37,653 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1151 transitions. [2025-03-16 23:43:37,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:43:37,654 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1151 transitions. [2025-03-16 23:43:37,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2025-03-16 23:43:37,655 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:43:37,655 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:43:37,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 23:43:37,656 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:43:37,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:43:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1547660300, now seen corresponding path program 1 times [2025-03-16 23:43:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:43:37,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121161408] [2025-03-16 23:43:37,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:43:37,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:43:37,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-03-16 23:43:37,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-03-16 23:43:37,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:43:37,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:43:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:43:39,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:43:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121161408] [2025-03-16 23:43:39,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121161408] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:43:39,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:43:39,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-16 23:43:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572426144] [2025-03-16 23:43:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:43:39,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 23:43:39,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:43:39,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 23:43:39,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-03-16 23:43:39,658 INFO L87 Difference]: Start difference. First operand 761 states and 1151 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:43:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:43:42,094 INFO L93 Difference]: Finished difference Result 1469 states and 2218 transitions. [2025-03-16 23:43:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 23:43:42,095 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 277 [2025-03-16 23:43:42,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:43:42,104 INFO L225 Difference]: With dead ends: 1469 [2025-03-16 23:43:42,104 INFO L226 Difference]: Without dead ends: 1036 [2025-03-16 23:43:42,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2025-03-16 23:43:42,106 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 384 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 23:43:42,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1345 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 23:43:42,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2025-03-16 23:43:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 765. [2025-03-16 23:43:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 581 states have (on average 1.3855421686746987) internal successors, (805), 581 states have internal predecessors, (805), 176 states have call successors, (176), 7 states have call predecessors, (176), 7 states have return successors, (176), 176 states have call predecessors, (176), 176 states have call successors, (176) [2025-03-16 23:43:42,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1157 transitions. [2025-03-16 23:43:42,153 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1157 transitions. Word has length 277 [2025-03-16 23:43:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:43:42,153 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 1157 transitions. [2025-03-16 23:43:42,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-16 23:43:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1157 transitions. [2025-03-16 23:43:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2025-03-16 23:43:42,155 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:43:42,155 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:43:42,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 23:43:42,156 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:43:42,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:43:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1147297844, now seen corresponding path program 1 times [2025-03-16 23:43:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:43:42,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887011581] [2025-03-16 23:43:42,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:43:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:43:42,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-03-16 23:43:42,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-03-16 23:43:42,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:43:42,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:43:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-16 23:43:45,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:43:45,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887011581] [2025-03-16 23:43:45,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887011581] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:43:45,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:43:45,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-16 23:43:45,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959943123] [2025-03-16 23:43:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:43:45,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-16 23:43:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:43:45,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-16 23:43:45,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-16 23:43:45,570 INFO L87 Difference]: Start difference. First operand 765 states and 1157 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44)