./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.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_operatoramount_amount250_file-27.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 cde063dcb13ed313b2f32e49cd3dc75da2c365cf6b52ae59dd9b17042beff0a8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 04:27:17,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 04:27:17,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 04:27:17,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 04:27:17,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 04:27:17,790 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 04:27:17,791 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 04:27:17,791 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 04:27:17,792 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 04:27:17,792 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 04:27:17,793 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 04:27:17,793 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 04:27:17,793 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 04:27:17,793 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 04:27:17,794 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 04:27:17,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 04:27:17,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 04:27:17,794 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 04:27:17,794 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 04:27:17,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 04:27:17,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 04:27:17,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 04:27:17,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 04:27:17,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 04:27:17,795 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 04:27:17,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 04:27:17,795 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 04:27:17,795 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 04:27:17,795 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 04:27:17,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 04:27:17,795 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 04:27:17,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 04:27:17,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:27:17,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 04:27:17,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 04:27:17,796 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 04:27:17,796 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 04:27:17,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 04:27:17,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 04:27:17,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 04:27:17,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 04:27:17,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 04:27:17,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 04:27:17,797 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 -> cde063dcb13ed313b2f32e49cd3dc75da2c365cf6b52ae59dd9b17042beff0a8 [2025-03-17 04:27:18,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 04:27:18,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 04:27:18,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 04:27:18,084 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 04:27:18,084 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 04:27:18,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i [2025-03-17 04:27:19,411 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf27eabb9/4f3d997538d94d609a0888f0f6d8a5d4/FLAGeb59b36af [2025-03-17 04:27:19,706 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 04:27:19,709 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i [2025-03-17 04:27:19,720 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf27eabb9/4f3d997538d94d609a0888f0f6d8a5d4/FLAGeb59b36af [2025-03-17 04:27:19,736 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf27eabb9/4f3d997538d94d609a0888f0f6d8a5d4 [2025-03-17 04:27:19,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 04:27:19,740 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 04:27:19,741 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 04:27:19,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 04:27:19,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 04:27:19,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:27:19" (1/1) ... [2025-03-17 04:27:19,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ff618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:19, skipping insertion in model container [2025-03-17 04:27:19,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:27:19" (1/1) ... [2025-03-17 04:27:19,770 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 04:27:19,872 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i[916,929] [2025-03-17 04:27:19,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:27:19,983 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 04:27:19,994 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-27.i[916,929] [2025-03-17 04:27:20,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:27:20,067 INFO L204 MainTranslator]: Completed translation [2025-03-17 04:27:20,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20 WrapperNode [2025-03-17 04:27:20,068 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 04:27:20,069 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 04:27:20,069 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 04:27:20,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 04:27:20,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,128 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 450 [2025-03-17 04:27:20,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 04:27:20,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 04:27:20,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 04:27:20,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 04:27:20,138 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,182 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]. [2025-03-17 04:27:20,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,199 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 04:27:20,217 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 04:27:20,217 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 04:27:20,217 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 04:27:20,218 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (1/1) ... [2025-03-17 04:27:20,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:27:20,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:20,250 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) [2025-03-17 04:27:20,256 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 [2025-03-17 04:27:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 04:27:20,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 04:27:20,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 04:27:20,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 04:27:20,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 04:27:20,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 04:27:20,358 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 04:27:20,359 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 04:27:21,097 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L374: havoc property_#t~ite38#1;havoc property_#t~bitwise37#1;havoc property_#t~short39#1;havoc property_#t~bitwise40#1;havoc property_#t~short41#1;havoc property_#t~bitwise42#1;havoc property_#t~short43#1; [2025-03-17 04:27:21,163 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2025-03-17 04:27:21,163 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 04:27:21,189 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 04:27:21,189 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 04:27:21,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:27:21 BoogieIcfgContainer [2025-03-17 04:27:21,190 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 04:27:21,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 04:27:21,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 04:27:21,196 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 04:27:21,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:27:19" (1/3) ... [2025-03-17 04:27:21,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd29eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:27:21, skipping insertion in model container [2025-03-17 04:27:21,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:27:20" (2/3) ... [2025-03-17 04:27:21,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd29eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:27:21, skipping insertion in model container [2025-03-17 04:27:21,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:27:21" (3/3) ... [2025-03-17 04:27:21,199 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-27.i [2025-03-17 04:27:21,212 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 04:27:21,215 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-27.i that has 2 procedures, 185 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 04:27:21,264 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 04:27:21,273 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;@3920cf6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 04:27:21,273 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 04:27:21,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 132 states have internal predecessors, (198), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2025-03-17 04:27:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2025-03-17 04:27:21,293 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:21,295 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:21,295 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:21,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:21,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1564786758, now seen corresponding path program 1 times [2025-03-17 04:27:21,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:21,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209524098] [2025-03-17 04:27:21,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:21,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:21,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 337 statements into 1 equivalence classes. [2025-03-17 04:27:21,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 337 of 337 statements. [2025-03-17 04:27:21,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:21,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2025-03-17 04:27:21,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:21,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209524098] [2025-03-17 04:27:21,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209524098] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:27:21,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876754591] [2025-03-17 04:27:21,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:21,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:27:21,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:27:21,804 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) [2025-03-17 04:27:21,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 04:27:21,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 337 statements into 1 equivalence classes. [2025-03-17 04:27:22,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 337 of 337 statements. [2025-03-17 04:27:22,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:22,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:22,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 04:27:22,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:27:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 5000 trivial. 0 not checked. [2025-03-17 04:27:22,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 04:27:22,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876754591] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:22,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:27:22,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 04:27:22,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673305630] [2025-03-17 04:27:22,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:22,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 04:27:22,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:22,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 04:27:22,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:27:22,138 INFO L87 Difference]: Start difference. First operand has 185 states, 131 states have (on average 1.5114503816793894) internal successors, (198), 132 states have internal predecessors, (198), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2025-03-17 04:27:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:22,182 INFO L93 Difference]: Finished difference Result 366 states and 647 transitions. [2025-03-17 04:27:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 04:27:22,184 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) Word has length 337 [2025-03-17 04:27:22,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:22,213 INFO L225 Difference]: With dead ends: 366 [2025-03-17 04:27:22,213 INFO L226 Difference]: Without dead ends: 182 [2025-03-17 04:27:22,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:27:22,220 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:22,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:27:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2025-03-17 04:27:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2025-03-17 04:27:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 129 states have (on average 1.4728682170542635) internal successors, (190), 129 states have internal predecessors, (190), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2025-03-17 04:27:22,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 292 transitions. [2025-03-17 04:27:22,260 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 292 transitions. Word has length 337 [2025-03-17 04:27:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:22,260 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 292 transitions. [2025-03-17 04:27:22,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 2 states have call successors, (51) [2025-03-17 04:27:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 292 transitions. [2025-03-17 04:27:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2025-03-17 04:27:22,267 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:22,267 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:22,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 04:27:22,472 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 [2025-03-17 04:27:22,472 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:22,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash -213203853, now seen corresponding path program 1 times [2025-03-17 04:27:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:22,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207221986] [2025-03-17 04:27:22,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:22,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:22,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 338 statements into 1 equivalence classes. [2025-03-17 04:27:22,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 338 of 338 statements. [2025-03-17 04:27:22,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:22,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2025-03-17 04:27:23,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:23,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207221986] [2025-03-17 04:27:23,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207221986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:23,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:23,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:27:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760497747] [2025-03-17 04:27:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:23,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:27:23,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:23,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:27:23,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:27:23,582 INFO L87 Difference]: Start difference. First operand 182 states and 292 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2025-03-17 04:27:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:24,380 INFO L93 Difference]: Finished difference Result 711 states and 1137 transitions. [2025-03-17 04:27:24,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:27:24,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 338 [2025-03-17 04:27:24,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:24,389 INFO L225 Difference]: With dead ends: 711 [2025-03-17 04:27:24,389 INFO L226 Difference]: Without dead ends: 530 [2025-03-17 04:27:24,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:27:24,391 INFO L435 NwaCegarLoop]: 553 mSDtfsCounter, 552 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:24,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1266 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 04:27:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2025-03-17 04:27:24,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 397. [2025-03-17 04:27:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 292 states have (on average 1.4691780821917808) internal successors, (429), 292 states have internal predecessors, (429), 102 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-17 04:27:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 633 transitions. [2025-03-17 04:27:24,456 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 633 transitions. Word has length 338 [2025-03-17 04:27:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:24,456 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 633 transitions. [2025-03-17 04:27:24,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2025-03-17 04:27:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 633 transitions. [2025-03-17 04:27:24,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2025-03-17 04:27:24,464 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:24,464 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:24,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 04:27:24,465 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:24,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:24,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1419600146, now seen corresponding path program 1 times [2025-03-17 04:27:24,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:24,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142131952] [2025-03-17 04:27:24,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:24,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:24,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 338 statements into 1 equivalence classes. [2025-03-17 04:27:24,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 338 of 338 statements. [2025-03-17 04:27:24,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:24,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2025-03-17 04:27:25,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:25,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142131952] [2025-03-17 04:27:25,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142131952] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:25,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:25,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:27:25,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718512292] [2025-03-17 04:27:25,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:25,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:27:25,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:25,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:27:25,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:27:25,528 INFO L87 Difference]: Start difference. First operand 397 states and 633 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2025-03-17 04:27:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:26,178 INFO L93 Difference]: Finished difference Result 1297 states and 2062 transitions. [2025-03-17 04:27:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:27:26,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 338 [2025-03-17 04:27:26,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:26,184 INFO L225 Difference]: With dead ends: 1297 [2025-03-17 04:27:26,184 INFO L226 Difference]: Without dead ends: 901 [2025-03-17 04:27:26,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:27:26,186 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 410 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:26,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 897 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 04:27:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2025-03-17 04:27:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 740. [2025-03-17 04:27:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 573 states have (on average 1.4956369982547992) internal successors, (857), 575 states have internal predecessors, (857), 162 states have call successors, (162), 4 states have call predecessors, (162), 4 states have return successors, (162), 160 states have call predecessors, (162), 162 states have call successors, (162) [2025-03-17 04:27:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1181 transitions. [2025-03-17 04:27:26,275 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1181 transitions. Word has length 338 [2025-03-17 04:27:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:26,276 INFO L471 AbstractCegarLoop]: Abstraction has 740 states and 1181 transitions. [2025-03-17 04:27:26,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2025-03-17 04:27:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1181 transitions. [2025-03-17 04:27:26,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2025-03-17 04:27:26,280 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:26,280 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:26,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 04:27:26,281 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:26,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:26,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1498784808, now seen corresponding path program 1 times [2025-03-17 04:27:26,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:26,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399022444] [2025-03-17 04:27:26,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:26,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:26,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 339 statements into 1 equivalence classes. [2025-03-17 04:27:26,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 339 of 339 statements. [2025-03-17 04:27:26,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:26,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2025-03-17 04:27:43,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:43,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399022444] [2025-03-17 04:27:43,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399022444] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:43,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:43,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-17 04:27:43,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018168531] [2025-03-17 04:27:43,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:43,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 04:27:43,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:43,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 04:27:43,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-03-17 04:27:43,631 INFO L87 Difference]: Start difference. First operand 740 states and 1181 transitions. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 6 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 6 states have call predecessors, (51), 6 states have call successors, (51) [2025-03-17 04:27:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:48,521 INFO L93 Difference]: Finished difference Result 3517 states and 5541 transitions. [2025-03-17 04:27:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 04:27:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 6 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 6 states have call predecessors, (51), 6 states have call successors, (51) Word has length 339 [2025-03-17 04:27:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:48,537 INFO L225 Difference]: With dead ends: 3517 [2025-03-17 04:27:48,538 INFO L226 Difference]: Without dead ends: 2778 [2025-03-17 04:27:48,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2025-03-17 04:27:48,543 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 3174 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3174 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:48,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3174 Valid, 1147 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [551 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-17 04:27:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2025-03-17 04:27:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1483. [2025-03-17 04:27:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1260 states have (on average 1.5222222222222221) internal successors, (1918), 1268 states have internal predecessors, (1918), 204 states have call successors, (204), 18 states have call predecessors, (204), 18 states have return successors, (204), 196 states have call predecessors, (204), 204 states have call successors, (204) [2025-03-17 04:27:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2326 transitions. [2025-03-17 04:27:48,663 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2326 transitions. Word has length 339 [2025-03-17 04:27:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:48,665 INFO L471 AbstractCegarLoop]: Abstraction has 1483 states and 2326 transitions. [2025-03-17 04:27:48,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 6 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 6 states have call predecessors, (51), 6 states have call successors, (51) [2025-03-17 04:27:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2326 transitions. [2025-03-17 04:27:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2025-03-17 04:27:48,669 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:48,670 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:48,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 04:27:48,670 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:48,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash -845882233, now seen corresponding path program 1 times [2025-03-17 04:27:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:48,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469655006] [2025-03-17 04:27:48,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:48,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 339 statements into 1 equivalence classes. [2025-03-17 04:27:48,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 339 of 339 statements. [2025-03-17 04:27:48,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:48,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2025-03-17 04:27:49,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:49,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469655006] [2025-03-17 04:27:49,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469655006] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:49,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:49,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:27:49,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298992212] [2025-03-17 04:27:49,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:49,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:27:49,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:49,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:27:49,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:27:49,352 INFO L87 Difference]: Start difference. First operand 1483 states and 2326 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2025-03-17 04:27:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:49,572 INFO L93 Difference]: Finished difference Result 2799 states and 4384 transitions. [2025-03-17 04:27:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:27:49,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 339 [2025-03-17 04:27:49,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:49,579 INFO L225 Difference]: With dead ends: 2799 [2025-03-17 04:27:49,580 INFO L226 Difference]: Without dead ends: 1320 [2025-03-17 04:27:49,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:27:49,584 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 215 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:49,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 753 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:27:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2025-03-17 04:27:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1316. [2025-03-17 04:27:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1093 states have (on average 1.5105215004574566) internal successors, (1651), 1101 states have internal predecessors, (1651), 204 states have call successors, (204), 18 states have call predecessors, (204), 18 states have return successors, (204), 196 states have call predecessors, (204), 204 states have call successors, (204) [2025-03-17 04:27:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 2059 transitions. [2025-03-17 04:27:49,689 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 2059 transitions. Word has length 339 [2025-03-17 04:27:49,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:49,690 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 2059 transitions. [2025-03-17 04:27:49,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2025-03-17 04:27:49,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 2059 transitions. [2025-03-17 04:27:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2025-03-17 04:27:49,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:49,694 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:49,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 04:27:49,695 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:49,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1768565816, now seen corresponding path program 1 times [2025-03-17 04:27:49,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:49,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102107638] [2025-03-17 04:27:49,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:49,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 339 statements into 1 equivalence classes. [2025-03-17 04:27:49,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 339 of 339 statements. [2025-03-17 04:27:49,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:49,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2025-03-17 04:27:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102107638] [2025-03-17 04:27:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102107638] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:50,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:50,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:27:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819037790] [2025-03-17 04:27:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:50,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:27:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:50,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:27:50,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:27:50,225 INFO L87 Difference]: Start difference. First operand 1316 states and 2059 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2025-03-17 04:27:50,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:50,904 INFO L93 Difference]: Finished difference Result 2993 states and 4662 transitions. [2025-03-17 04:27:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:27:50,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 339 [2025-03-17 04:27:50,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:50,915 INFO L225 Difference]: With dead ends: 2993 [2025-03-17 04:27:50,916 INFO L226 Difference]: Without dead ends: 1681 [2025-03-17 04:27:50,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 04:27:50,920 INFO L435 NwaCegarLoop]: 589 mSDtfsCounter, 461 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:50,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1412 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 04:27:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2025-03-17 04:27:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1239. [2025-03-17 04:27:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 975 states have (on average 1.445128205128205) internal successors, (1409), 982 states have internal predecessors, (1409), 243 states have call successors, (243), 20 states have call predecessors, (243), 20 states have return successors, (243), 236 states have call predecessors, (243), 243 states have call successors, (243) [2025-03-17 04:27:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1895 transitions. [2025-03-17 04:27:51,053 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1895 transitions. Word has length 339 [2025-03-17 04:27:51,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:51,054 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 1895 transitions. [2025-03-17 04:27:51,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2025-03-17 04:27:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1895 transitions. [2025-03-17 04:27:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2025-03-17 04:27:51,061 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:51,061 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:51,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 04:27:51,062 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:51,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1411994796, now seen corresponding path program 1 times [2025-03-17 04:27:51,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:51,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863840811] [2025-03-17 04:27:51,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:51,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:51,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-17 04:27:51,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-17 04:27:51,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:51,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2025-03-17 04:27:53,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:53,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863840811] [2025-03-17 04:27:53,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863840811] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:53,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:53,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 04:27:53,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492362915] [2025-03-17 04:27:53,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:53,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 04:27:53,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:53,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 04:27:53,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-03-17 04:27:53,571 INFO L87 Difference]: Start difference. First operand 1239 states and 1895 transitions. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 2 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2025-03-17 04:27:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:57,357 INFO L93 Difference]: Finished difference Result 5411 states and 8209 transitions. [2025-03-17 04:27:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 04:27:57,358 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 2 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 340 [2025-03-17 04:27:57,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:57,379 INFO L225 Difference]: With dead ends: 5411 [2025-03-17 04:27:57,379 INFO L226 Difference]: Without dead ends: 4259 [2025-03-17 04:27:57,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2025-03-17 04:27:57,385 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 1834 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:57,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 2101 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-17 04:27:57,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2025-03-17 04:27:57,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 2979. [2025-03-17 04:27:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2442 states have (on average 1.4643734643734643) internal successors, (3576), 2459 states have internal predecessors, (3576), 485 states have call successors, (485), 51 states have call predecessors, (485), 51 states have return successors, (485), 468 states have call predecessors, (485), 485 states have call successors, (485) [2025-03-17 04:27:57,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4546 transitions. [2025-03-17 04:27:57,835 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4546 transitions. Word has length 340 [2025-03-17 04:27:57,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:57,837 INFO L471 AbstractCegarLoop]: Abstraction has 2979 states and 4546 transitions. [2025-03-17 04:27:57,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 2 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2025-03-17 04:27:57,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4546 transitions. [2025-03-17 04:27:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2025-03-17 04:27:57,843 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:57,843 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:57,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 04:27:57,843 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:57,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:57,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1666731341, now seen corresponding path program 1 times [2025-03-17 04:27:57,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:57,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980020919] [2025-03-17 04:27:57,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:57,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:57,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-17 04:27:57,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-17 04:27:57,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:57,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:27:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2025-03-17 04:27:58,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:27:58,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980020919] [2025-03-17 04:27:58,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980020919] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:27:58,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:27:58,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:27:58,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760196558] [2025-03-17 04:27:58,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:27:58,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:27:58,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:27:58,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:27:58,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:27:58,151 INFO L87 Difference]: Start difference. First operand 2979 states and 4546 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2025-03-17 04:27:58,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:27:58,814 INFO L93 Difference]: Finished difference Result 8432 states and 12884 transitions. [2025-03-17 04:27:58,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:27:58,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) Word has length 340 [2025-03-17 04:27:58,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:27:58,855 INFO L225 Difference]: With dead ends: 8432 [2025-03-17 04:27:58,855 INFO L226 Difference]: Without dead ends: 5544 [2025-03-17 04:27:58,864 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:27:58,865 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 177 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:27:58,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 889 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:27:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2025-03-17 04:27:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 5542. [2025-03-17 04:27:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 4577 states have (on average 1.4640594275726457) internal successors, (6701), 4606 states have internal predecessors, (6701), 873 states have call successors, (873), 91 states have call predecessors, (873), 91 states have return successors, (873), 844 states have call predecessors, (873), 873 states have call successors, (873) [2025-03-17 04:27:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 8447 transitions. [2025-03-17 04:27:59,365 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 8447 transitions. Word has length 340 [2025-03-17 04:27:59,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:27:59,366 INFO L471 AbstractCegarLoop]: Abstraction has 5542 states and 8447 transitions. [2025-03-17 04:27:59,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 1 states have call predecessors, (51), 1 states have call successors, (51) [2025-03-17 04:27:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 8447 transitions. [2025-03-17 04:27:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2025-03-17 04:27:59,373 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:27:59,373 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:27:59,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 04:27:59,373 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:27:59,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:27:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1145978800, now seen corresponding path program 1 times [2025-03-17 04:27:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:27:59,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071571182] [2025-03-17 04:27:59,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:27:59,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:27:59,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-17 04:27:59,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-17 04:27:59,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:27:59,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2025-03-17 04:28:03,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:28:03,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071571182] [2025-03-17 04:28:03,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071571182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:28:03,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:28:03,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 04:28:03,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898798422] [2025-03-17 04:28:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:28:03,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 04:28:03,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:28:03,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 04:28:03,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-17 04:28:03,135 INFO L87 Difference]: Start difference. First operand 5542 states and 8447 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) [2025-03-17 04:28:05,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:28:05,730 INFO L93 Difference]: Finished difference Result 17196 states and 26084 transitions. [2025-03-17 04:28:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 04:28:05,731 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) Word has length 340 [2025-03-17 04:28:05,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:28:05,783 INFO L225 Difference]: With dead ends: 17196 [2025-03-17 04:28:05,783 INFO L226 Difference]: Without dead ends: 11745 [2025-03-17 04:28:05,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2025-03-17 04:28:05,798 INFO L435 NwaCegarLoop]: 302 mSDtfsCounter, 1552 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:28:05,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 1194 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-17 04:28:05,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11745 states. [2025-03-17 04:28:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11745 to 6941. [2025-03-17 04:28:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6941 states, 5803 states have (on average 1.4694123729105635) internal successors, (8527), 5834 states have internal predecessors, (8527), 1019 states have call successors, (1019), 118 states have call predecessors, (1019), 118 states have return successors, (1019), 988 states have call predecessors, (1019), 1019 states have call successors, (1019) [2025-03-17 04:28:06,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6941 states to 6941 states and 10565 transitions. [2025-03-17 04:28:06,475 INFO L78 Accepts]: Start accepts. Automaton has 6941 states and 10565 transitions. Word has length 340 [2025-03-17 04:28:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:28:06,476 INFO L471 AbstractCegarLoop]: Abstraction has 6941 states and 10565 transitions. [2025-03-17 04:28:06,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 5 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 5 states have call predecessors, (51), 5 states have call successors, (51) [2025-03-17 04:28:06,480 INFO L276 IsEmpty]: Start isEmpty. Operand 6941 states and 10565 transitions. [2025-03-17 04:28:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2025-03-17 04:28:06,487 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:28:06,488 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:28:06,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 04:28:06,488 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:28:06,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:28:06,489 INFO L85 PathProgramCache]: Analyzing trace with hash -387300875, now seen corresponding path program 1 times [2025-03-17 04:28:06,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:28:06,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874917162] [2025-03-17 04:28:06,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:06,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:28:06,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-17 04:28:07,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-17 04:28:07,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:07,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 87 proven. 207 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2025-03-17 04:28:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:28:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874917162] [2025-03-17 04:28:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874917162] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:28:07,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735811259] [2025-03-17 04:28:07,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:07,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:28:07,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:28:07,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:28:07,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 04:28:07,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-17 04:28:07,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-17 04:28:07,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:07,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:07,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 04:28:07,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:28:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 2810 proven. 207 refuted. 0 times theorem prover too weak. 2083 trivial. 0 not checked. [2025-03-17 04:28:08,369 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:28:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 87 proven. 210 refuted. 0 times theorem prover too weak. 4803 trivial. 0 not checked. [2025-03-17 04:28:08,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735811259] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:28:08,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:28:08,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2025-03-17 04:28:08,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351118483] [2025-03-17 04:28:08,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:28:08,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 04:28:08,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:28:08,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 04:28:08,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-03-17 04:28:08,689 INFO L87 Difference]: Start difference. First operand 6941 states and 10565 transitions. Second operand has 15 states, 15 states have (on average 9.2) internal successors, (138), 15 states have internal predecessors, (138), 4 states have call successors, (91), 3 states have call predecessors, (91), 7 states have return successors, (93), 4 states have call predecessors, (93), 4 states have call successors, (93) [2025-03-17 04:28:09,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:28:09,730 INFO L93 Difference]: Finished difference Result 14029 states and 21177 transitions. [2025-03-17 04:28:09,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 04:28:09,731 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.2) internal successors, (138), 15 states have internal predecessors, (138), 4 states have call successors, (91), 3 states have call predecessors, (91), 7 states have return successors, (93), 4 states have call predecessors, (93), 4 states have call successors, (93) Word has length 340 [2025-03-17 04:28:09,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:28:09,754 INFO L225 Difference]: With dead ends: 14029 [2025-03-17 04:28:09,754 INFO L226 Difference]: Without dead ends: 7183 [2025-03-17 04:28:09,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 671 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2025-03-17 04:28:09,764 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 463 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:28:09,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 687 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 04:28:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7183 states. [2025-03-17 04:28:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7183 to 7161. [2025-03-17 04:28:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7161 states, 5968 states have (on average 1.449396782841823) internal successors, (8650), 5999 states have internal predecessors, (8650), 1019 states have call successors, (1019), 173 states have call predecessors, (1019), 173 states have return successors, (1019), 988 states have call predecessors, (1019), 1019 states have call successors, (1019) [2025-03-17 04:28:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7161 states to 7161 states and 10688 transitions. [2025-03-17 04:28:10,760 INFO L78 Accepts]: Start accepts. Automaton has 7161 states and 10688 transitions. Word has length 340 [2025-03-17 04:28:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:28:10,761 INFO L471 AbstractCegarLoop]: Abstraction has 7161 states and 10688 transitions. [2025-03-17 04:28:10,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.2) internal successors, (138), 15 states have internal predecessors, (138), 4 states have call successors, (91), 3 states have call predecessors, (91), 7 states have return successors, (93), 4 states have call predecessors, (93), 4 states have call successors, (93) [2025-03-17 04:28:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 7161 states and 10688 transitions. [2025-03-17 04:28:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2025-03-17 04:28:10,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:28:10,766 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:28:10,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 04:28:10,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-17 04:28:10,971 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:28:10,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:28:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash -263227628, now seen corresponding path program 1 times [2025-03-17 04:28:10,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:28:10,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085329520] [2025-03-17 04:28:10,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:10,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:28:10,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-17 04:28:11,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-17 04:28:11,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:11,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 111 proven. 183 refuted. 0 times theorem prover too weak. 4806 trivial. 0 not checked. [2025-03-17 04:28:13,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:28:13,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085329520] [2025-03-17 04:28:13,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085329520] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:28:13,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726190284] [2025-03-17 04:28:13,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:13,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:28:13,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:28:13,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:28:13,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 04:28:13,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 340 statements into 1 equivalence classes. [2025-03-17 04:28:13,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 340 of 340 statements. [2025-03-17 04:28:13,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:13,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:28:13,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 04:28:13,889 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:28:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 3155 proven. 192 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2025-03-17 04:28:14,450 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:28:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5100 backedges. 102 proven. 195 refuted. 0 times theorem prover too weak. 4803 trivial. 0 not checked. [2025-03-17 04:28:15,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726190284] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:28:15,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:28:15,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 28 [2025-03-17 04:28:15,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341598674] [2025-03-17 04:28:15,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:28:15,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 04:28:15,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:28:15,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 04:28:15,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2025-03-17 04:28:15,058 INFO L87 Difference]: Start difference. First operand 7161 states and 10688 transitions. Second operand has 28 states, 27 states have (on average 8.88888888888889) internal successors, (240), 28 states have internal predecessors, (240), 11 states have call successors, (143), 3 states have call predecessors, (143), 7 states have return successors, (144), 10 states have call predecessors, (144), 11 states have call successors, (144) [2025-03-17 04:28:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:28:22,261 INFO L93 Difference]: Finished difference Result 25901 states and 38552 transitions. [2025-03-17 04:28:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-17 04:28:22,262 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 8.88888888888889) internal successors, (240), 28 states have internal predecessors, (240), 11 states have call successors, (143), 3 states have call predecessors, (143), 7 states have return successors, (144), 10 states have call predecessors, (144), 11 states have call successors, (144) Word has length 340 [2025-03-17 04:28:22,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:28:22,311 INFO L225 Difference]: With dead ends: 25901 [2025-03-17 04:28:22,311 INFO L226 Difference]: Without dead ends: 18847 [2025-03-17 04:28:22,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1639, Invalid=4367, Unknown=0, NotChecked=0, Total=6006 [2025-03-17 04:28:22,327 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 6262 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 1020 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 4043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1020 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:28:22,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 2945 Invalid, 4043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1020 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-03-17 04:28:22,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18847 states. [2025-03-17 04:28:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18847 to 7257. [2025-03-17 04:28:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7257 states, 6237 states have (on average 1.4489337822671156) internal successors, (9037), 6262 states have internal predecessors, (9037), 825 states have call successors, (825), 194 states have call predecessors, (825), 194 states have return successors, (825), 800 states have call predecessors, (825), 825 states have call successors, (825) [2025-03-17 04:28:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7257 states to 7257 states and 10687 transitions. [2025-03-17 04:28:23,106 INFO L78 Accepts]: Start accepts. Automaton has 7257 states and 10687 transitions. Word has length 340 [2025-03-17 04:28:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:28:23,108 INFO L471 AbstractCegarLoop]: Abstraction has 7257 states and 10687 transitions. [2025-03-17 04:28:23,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 8.88888888888889) internal successors, (240), 28 states have internal predecessors, (240), 11 states have call successors, (143), 3 states have call predecessors, (143), 7 states have return successors, (144), 10 states have call predecessors, (144), 11 states have call successors, (144) [2025-03-17 04:28:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 7257 states and 10687 transitions. [2025-03-17 04:28:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2025-03-17 04:28:23,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:28:23,115 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:28:23,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 04:28:23,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:28:23,316 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:28:23,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:28:23,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1303858019, now seen corresponding path program 1 times [2025-03-17 04:28:23,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:28:23,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053118535] [2025-03-17 04:28:23,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:28:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:28:23,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 342 statements into 1 equivalence classes. [2025-03-17 04:28:23,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 342 of 342 statements. [2025-03-17 04:28:23,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:28:23,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat