./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.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 5208e97c947824349dcc8cb32160d4052cba683a795fae400d45ff0b27a23a25 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:23:51,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:23:51,259 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:23:51,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:23:51,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:23:51,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:23:51,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:23:51,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:23:51,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:23:51,277 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:23:51,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:23:51,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:23:51,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:23:51,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:23:51,278 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:23:51,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:23:51,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:23:51,281 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:23:51,282 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:23:51,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:23:51,282 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:23:51,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:23:51,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:23:51,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:23:51,283 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 -> 5208e97c947824349dcc8cb32160d4052cba683a795fae400d45ff0b27a23a25 [2025-03-08 15:23:51,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:23:51,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:23:51,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:23:51,495 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:23:51,495 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:23:51,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i [2025-03-08 15:23:52,639 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b612bf9a/93b359eb7995491da7b51cc691d7798d/FLAGb9dc20c29 [2025-03-08 15:23:52,937 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:23:52,938 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-55.i [2025-03-08 15:23:52,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b612bf9a/93b359eb7995491da7b51cc691d7798d/FLAGb9dc20c29 [2025-03-08 15:23:52,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b612bf9a/93b359eb7995491da7b51cc691d7798d [2025-03-08 15:23:52,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:23:52,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:23:52,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:23:52,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:23:52,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:23:52,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:23:52" (1/1) ... [2025-03-08 15:23:52,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf00e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:52, skipping insertion in model container [2025-03-08 15:23:52,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:23:52" (1/1) ... [2025-03-08 15:23:53,000 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:23:53,101 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-55.i[916,929] [2025-03-08 15:23:53,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:23:53,199 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:23:53,207 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-55.i[916,929] [2025-03-08 15:23:53,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:23:53,266 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:23:53,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53 WrapperNode [2025-03-08 15:23:53,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:23:53,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:23:53,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:23:53,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:23:53,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,320 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 484 [2025-03-08 15:23:53,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:23:53,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:23:53,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:23:53,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:23:53,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,369 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 15:23:53,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,384 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:23:53,401 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:23:53,401 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:23:53,401 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:23:53,402 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (1/1) ... [2025-03-08 15:23:53,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:23:53,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:23:53,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 15:23:53,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 15:23:53,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:23:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:23:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:23:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:23:53,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:23:53,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:23:53,549 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:23:53,551 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:23:54,086 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L413: havoc property_#t~bitwise43#1;havoc property_#t~short44#1;havoc property_#t~ite48#1;havoc property_#t~ite47#1;havoc property_#t~bitwise45#1;havoc property_#t~bitwise46#1;havoc property_#t~short49#1; [2025-03-08 15:23:54,150 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2025-03-08 15:23:54,150 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:23:54,168 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:23:54,169 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:23:54,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:23:54 BoogieIcfgContainer [2025-03-08 15:23:54,169 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:23:54,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:23:54,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:23:54,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:23:54,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:23:52" (1/3) ... [2025-03-08 15:23:54,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2fa5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:23:54, skipping insertion in model container [2025-03-08 15:23:54,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:23:53" (2/3) ... [2025-03-08 15:23:54,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2fa5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:23:54, skipping insertion in model container [2025-03-08 15:23:54,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:23:54" (3/3) ... [2025-03-08 15:23:54,178 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-55.i [2025-03-08 15:23:54,188 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:23:54,190 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-55.i that has 2 procedures, 195 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:23:54,239 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:23:54,246 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;@1bbdd86f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:23:54,246 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:23:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 131 states have (on average 1.465648854961832) internal successors, (192), 132 states have internal predecessors, (192), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2025-03-08 15:23:54,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2025-03-08 15:23:54,266 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:23:54,267 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:23:54,268 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:23:54,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:23:54,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1658804254, now seen corresponding path program 1 times [2025-03-08 15:23:54,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:23:54,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497368934] [2025-03-08 15:23:54,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:23:54,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:23:54,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-03-08 15:23:54,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-03-08 15:23:54,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:23:54,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:23:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2025-03-08 15:23:54,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:23:54,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497368934] [2025-03-08 15:23:54,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497368934] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:23:54,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227664207] [2025-03-08 15:23:54,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:23:54,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:23:54,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:23:54,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:23:54,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 15:23:54,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-03-08 15:23:55,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-03-08 15:23:55,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:23:55,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:23:55,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:23:55,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:23:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2025-03-08 15:23:55,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:23:55,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227664207] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:23:55,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:23:55,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:23:55,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567613132] [2025-03-08 15:23:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:23:55,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:23:55,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:23:55,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:23:55,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:23:55,073 INFO L87 Difference]: Start difference. First operand has 195 states, 131 states have (on average 1.465648854961832) internal successors, (192), 132 states have internal predecessors, (192), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2025-03-08 15:23:55,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:23:55,115 INFO L93 Difference]: Finished difference Result 383 states and 682 transitions. [2025-03-08 15:23:55,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:23:55,117 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) Word has length 388 [2025-03-08 15:23:55,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:23:55,124 INFO L225 Difference]: With dead ends: 383 [2025-03-08 15:23:55,124 INFO L226 Difference]: Without dead ends: 191 [2025-03-08 15:23:55,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:23:55,134 INFO L435 NwaCegarLoop]: 299 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, 299 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 [2025-03-08 15:23:55,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:23:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-03-08 15:23:55,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2025-03-08 15:23:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 128 states have (on average 1.4296875) internal successors, (183), 128 states have internal predecessors, (183), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2025-03-08 15:23:55,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 305 transitions. [2025-03-08 15:23:55,194 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 305 transitions. Word has length 388 [2025-03-08 15:23:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:23:55,196 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 305 transitions. [2025-03-08 15:23:55,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2025-03-08 15:23:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 305 transitions. [2025-03-08 15:23:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2025-03-08 15:23:55,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:23:55,204 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:23:55,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 15:23:55,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 15:23:55,406 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:23:55,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:23:55,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1759079806, now seen corresponding path program 1 times [2025-03-08 15:23:55,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:23:55,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147299801] [2025-03-08 15:23:55,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:23:55,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:23:55,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-03-08 15:23:55,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-03-08 15:23:55,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:23:55,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:23:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-08 15:23:55,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:23:55,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147299801] [2025-03-08 15:23:55,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147299801] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:23:55,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:23:55,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:23:55,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641804919] [2025-03-08 15:23:55,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:23:55,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:23:55,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:23:55,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:23:55,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:23:55,736 INFO L87 Difference]: Start difference. First operand 191 states and 305 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-08 15:23:55,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:23:55,876 INFO L93 Difference]: Finished difference Result 559 states and 894 transitions. [2025-03-08 15:23:55,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:23:55,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 388 [2025-03-08 15:23:55,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:23:55,883 INFO L225 Difference]: With dead ends: 559 [2025-03-08 15:23:55,884 INFO L226 Difference]: Without dead ends: 371 [2025-03-08 15:23:55,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:23:55,886 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 271 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:23:55,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 766 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:23:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2025-03-08 15:23:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 224. [2025-03-08 15:23:55,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 161 states have (on average 1.4161490683229814) internal successors, (228), 161 states have internal predecessors, (228), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2025-03-08 15:23:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 350 transitions. [2025-03-08 15:23:55,925 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 350 transitions. Word has length 388 [2025-03-08 15:23:55,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:23:55,928 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 350 transitions. [2025-03-08 15:23:55,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-08 15:23:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 350 transitions. [2025-03-08 15:23:55,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2025-03-08 15:23:55,932 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:23:55,932 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:23:55,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:23:55,933 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:23:55,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:23:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash 560606116, now seen corresponding path program 1 times [2025-03-08 15:23:55,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:23:55,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668256038] [2025-03-08 15:23:55,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:23:55,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:23:55,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-03-08 15:23:56,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-03-08 15:23:56,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:23:56,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:23:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-08 15:23:56,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:23:56,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668256038] [2025-03-08 15:23:56,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668256038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:23:56,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:23:56,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 15:23:56,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489200918] [2025-03-08 15:23:56,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:23:56,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 15:23:56,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:23:56,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 15:23:56,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:23:56,511 INFO L87 Difference]: Start difference. First operand 224 states and 350 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2025-03-08 15:23:56,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:23:56,885 INFO L93 Difference]: Finished difference Result 756 states and 1178 transitions. [2025-03-08 15:23:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:23:56,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 388 [2025-03-08 15:23:56,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:23:56,893 INFO L225 Difference]: With dead ends: 756 [2025-03-08 15:23:56,893 INFO L226 Difference]: Without dead ends: 535 [2025-03-08 15:23:56,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-08 15:23:56,895 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 345 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:23:56,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1597 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:23:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2025-03-08 15:23:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 443. [2025-03-08 15:23:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 318 states have (on average 1.4182389937106918) internal successors, (451), 318 states have internal predecessors, (451), 122 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2025-03-08 15:23:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 695 transitions. [2025-03-08 15:23:56,953 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 695 transitions. Word has length 388 [2025-03-08 15:23:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:23:56,955 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 695 transitions. [2025-03-08 15:23:56,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2025-03-08 15:23:56,956 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 695 transitions. [2025-03-08 15:23:56,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2025-03-08 15:23:56,959 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:23:56,959 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:23:56,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:23:56,960 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:23:56,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:23:56,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1414751670, now seen corresponding path program 1 times [2025-03-08 15:23:56,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:23:56,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470989199] [2025-03-08 15:23:56,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:23:56,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:23:56,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 389 statements into 1 equivalence classes. [2025-03-08 15:23:57,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 389 of 389 statements. [2025-03-08 15:23:57,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:23:57,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:23:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 171 proven. 9 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-03-08 15:23:58,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:23:58,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470989199] [2025-03-08 15:23:58,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470989199] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:23:58,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534226568] [2025-03-08 15:23:58,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:23:58,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:23:58,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:23:58,029 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:23:58,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 15:23:58,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 389 statements into 1 equivalence classes. [2025-03-08 15:23:58,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 389 of 389 statements. [2025-03-08 15:23:58,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:23:58,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:23:58,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 15:23:58,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:23:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 858 proven. 9 refuted. 0 times theorem prover too weak. 6453 trivial. 0 not checked. [2025-03-08 15:23:58,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:23:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 171 proven. 9 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-03-08 15:23:58,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534226568] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:23:58,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:23:58,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-03-08 15:23:58,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479564225] [2025-03-08 15:23:58,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:23:58,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 15:23:58,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:23:58,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 15:23:58,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:23:58,700 INFO L87 Difference]: Start difference. First operand 443 states and 695 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2025-03-08 15:23:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:23:59,490 INFO L93 Difference]: Finished difference Result 952 states and 1480 transitions. [2025-03-08 15:23:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 15:23:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 389 [2025-03-08 15:23:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:23:59,496 INFO L225 Difference]: With dead ends: 952 [2025-03-08 15:23:59,496 INFO L226 Difference]: Without dead ends: 512 [2025-03-08 15:23:59,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 774 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2025-03-08 15:23:59,497 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 703 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:23:59,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 983 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 15:23:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2025-03-08 15:23:59,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 485. [2025-03-08 15:23:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 295 states have (on average 1.2813559322033898) internal successors, (378), 296 states have internal predecessors, (378), 183 states have call successors, (183), 6 states have call predecessors, (183), 6 states have return successors, (183), 182 states have call predecessors, (183), 183 states have call successors, (183) [2025-03-08 15:23:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 744 transitions. [2025-03-08 15:23:59,553 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 744 transitions. Word has length 389 [2025-03-08 15:23:59,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:23:59,554 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 744 transitions. [2025-03-08 15:23:59,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2025-03-08 15:23:59,554 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 744 transitions. [2025-03-08 15:23:59,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2025-03-08 15:23:59,556 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:23:59,557 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:23:59,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 15:23:59,757 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,SelfDestructingSolverStorable3 [2025-03-08 15:23:59,758 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:23:59,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:23:59,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1357604680, now seen corresponding path program 1 times [2025-03-08 15:23:59,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:23:59,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579717645] [2025-03-08 15:23:59,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:23:59,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:23:59,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 390 statements into 1 equivalence classes. [2025-03-08 15:24:00,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 390 of 390 statements. [2025-03-08 15:24:00,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:00,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:24:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 84 proven. 438 refuted. 0 times theorem prover too weak. 6798 trivial. 0 not checked. [2025-03-08 15:24:03,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:24:03,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579717645] [2025-03-08 15:24:03,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579717645] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:24:03,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712363523] [2025-03-08 15:24:03,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:03,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:03,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:24:03,105 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) [2025-03-08 15:24:03,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 15:24:03,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 390 statements into 1 equivalence classes. [2025-03-08 15:24:03,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 390 of 390 statements. [2025-03-08 15:24:03,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:03,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:24:03,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 15:24:03,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:24:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 2079 proven. 576 refuted. 0 times theorem prover too weak. 4665 trivial. 0 not checked. [2025-03-08 15:24:06,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:24:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 84 proven. 447 refuted. 0 times theorem prover too weak. 6789 trivial. 0 not checked. [2025-03-08 15:24:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712363523] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:24:09,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:24:09,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 18] total 46 [2025-03-08 15:24:09,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994456774] [2025-03-08 15:24:09,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:24:09,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-08 15:24:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:24:09,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-08 15:24:09,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1723, Unknown=0, NotChecked=0, Total=2070 [2025-03-08 15:24:09,187 INFO L87 Difference]: Start difference. First operand 485 states and 744 transitions. Second operand has 46 states, 43 states have (on average 6.255813953488372) internal successors, (269), 41 states have internal predecessors, (269), 15 states have call successors, (183), 6 states have call predecessors, (183), 11 states have return successors, (183), 15 states have call predecessors, (183), 15 states have call successors, (183) [2025-03-08 15:24:14,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:24:14,604 INFO L93 Difference]: Finished difference Result 2221 states and 3271 transitions. [2025-03-08 15:24:14,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2025-03-08 15:24:14,605 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 6.255813953488372) internal successors, (269), 41 states have internal predecessors, (269), 15 states have call successors, (183), 6 states have call predecessors, (183), 11 states have return successors, (183), 15 states have call predecessors, (183), 15 states have call successors, (183) Word has length 390 [2025-03-08 15:24:14,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:24:14,613 INFO L225 Difference]: With dead ends: 2221 [2025-03-08 15:24:14,613 INFO L226 Difference]: Without dead ends: 1845 [2025-03-08 15:24:14,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5119 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2281, Invalid=12971, Unknown=0, NotChecked=0, Total=15252 [2025-03-08 15:24:14,617 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 4009 mSDsluCounter, 3724 mSDsCounter, 0 mSdLazyCounter, 4292 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4040 SdHoareTripleChecker+Valid, 3929 SdHoareTripleChecker+Invalid, 5156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 4292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:24:14,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4040 Valid, 3929 Invalid, 5156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 4292 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-03-08 15:24:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2025-03-08 15:24:14,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 774. [2025-03-08 15:24:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 555 states have (on average 1.3423423423423424) internal successors, (745), 557 states have internal predecessors, (745), 205 states have call successors, (205), 13 states have call predecessors, (205), 13 states have return successors, (205), 203 states have call predecessors, (205), 205 states have call successors, (205) [2025-03-08 15:24:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1155 transitions. [2025-03-08 15:24:14,701 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1155 transitions. Word has length 390 [2025-03-08 15:24:14,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:24:14,701 INFO L471 AbstractCegarLoop]: Abstraction has 774 states and 1155 transitions. [2025-03-08 15:24:14,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 6.255813953488372) internal successors, (269), 41 states have internal predecessors, (269), 15 states have call successors, (183), 6 states have call predecessors, (183), 11 states have return successors, (183), 15 states have call predecessors, (183), 15 states have call successors, (183) [2025-03-08 15:24:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1155 transitions. [2025-03-08 15:24:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2025-03-08 15:24:14,704 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:24:14,704 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:24:14,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 15:24:14,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:14,905 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:24:14,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:24:14,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1726524154, now seen corresponding path program 1 times [2025-03-08 15:24:14,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:24:14,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250008693] [2025-03-08 15:24:14,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:14,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:24:14,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 15:24:15,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 15:24:15,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:15,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:24:15,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860451324] [2025-03-08 15:24:15,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:15,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:15,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:24:15,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:24:15,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 15:24:15,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 15:24:15,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 15:24:15,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:15,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:24:15,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 15:24:15,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:24:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3458 proven. 123 refuted. 0 times theorem prover too weak. 3739 trivial. 0 not checked. [2025-03-08 15:24:16,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:24:16,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:24:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250008693] [2025-03-08 15:24:16,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:24:16,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860451324] [2025-03-08 15:24:16,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860451324] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:24:16,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:24:16,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2025-03-08 15:24:16,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679045642] [2025-03-08 15:24:16,697 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 15:24:16,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 15:24:16,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:24:16,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 15:24:16,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:24:16,699 INFO L87 Difference]: Start difference. First operand 774 states and 1155 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 3 states have call successors, (61), 3 states have call predecessors, (61), 4 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2025-03-08 15:24:17,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:24:17,690 INFO L93 Difference]: Finished difference Result 1622 states and 2364 transitions. [2025-03-08 15:24:17,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 15:24:17,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 3 states have call successors, (61), 3 states have call predecessors, (61), 4 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 391 [2025-03-08 15:24:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:24:17,697 INFO L225 Difference]: With dead ends: 1622 [2025-03-08 15:24:17,698 INFO L226 Difference]: Without dead ends: 1358 [2025-03-08 15:24:17,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2025-03-08 15:24:17,699 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 617 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 15:24:17,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 876 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 15:24:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2025-03-08 15:24:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1208. [2025-03-08 15:24:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 973 states have (on average 1.3741007194244603) internal successors, (1337), 979 states have internal predecessors, (1337), 213 states have call successors, (213), 21 states have call predecessors, (213), 21 states have return successors, (213), 207 states have call predecessors, (213), 213 states have call successors, (213) [2025-03-08 15:24:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1763 transitions. [2025-03-08 15:24:17,789 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1763 transitions. Word has length 391 [2025-03-08 15:24:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:24:17,790 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1763 transitions. [2025-03-08 15:24:17,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 3 states have call successors, (61), 3 states have call predecessors, (61), 4 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2025-03-08 15:24:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1763 transitions. [2025-03-08 15:24:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2025-03-08 15:24:17,793 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:24:17,793 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:24:17,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 15:24:17,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:17,993 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:24:17,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:24:17,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1484667962, now seen corresponding path program 1 times [2025-03-08 15:24:17,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:24:17,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9072097] [2025-03-08 15:24:17,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:17,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:24:18,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 15:24:18,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 15:24:18,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:18,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:24:18,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251946490] [2025-03-08 15:24:18,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:18,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:18,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:24:18,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:24:18,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 15:24:18,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 15:24:18,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 15:24:18,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:18,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:24:18,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-08 15:24:18,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:24:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 4393 proven. 651 refuted. 0 times theorem prover too weak. 2276 trivial. 0 not checked. [2025-03-08 15:24:20,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:24:21,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:24:21,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9072097] [2025-03-08 15:24:21,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:24:21,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251946490] [2025-03-08 15:24:21,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251946490] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:24:21,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:24:21,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2025-03-08 15:24:21,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671659888] [2025-03-08 15:24:21,313 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 15:24:21,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 15:24:21,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:24:21,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 15:24:21,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2025-03-08 15:24:21,315 INFO L87 Difference]: Start difference. First operand 1208 states and 1763 transitions. Second operand has 19 states, 19 states have (on average 6.105263157894737) internal successors, (116), 18 states have internal predecessors, (116), 6 states have call successors, (61), 6 states have call predecessors, (61), 10 states have return successors, (61), 6 states have call predecessors, (61), 6 states have call successors, (61) [2025-03-08 15:24:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:24:23,194 INFO L93 Difference]: Finished difference Result 2296 states and 3244 transitions. [2025-03-08 15:24:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-08 15:24:23,195 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.105263157894737) internal successors, (116), 18 states have internal predecessors, (116), 6 states have call successors, (61), 6 states have call predecessors, (61), 10 states have return successors, (61), 6 states have call predecessors, (61), 6 states have call successors, (61) Word has length 391 [2025-03-08 15:24:23,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:24:23,201 INFO L225 Difference]: With dead ends: 2296 [2025-03-08 15:24:23,202 INFO L226 Difference]: Without dead ends: 1867 [2025-03-08 15:24:23,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=513, Invalid=1839, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 15:24:23,203 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 821 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 15:24:23,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1343 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 15:24:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2025-03-08 15:24:23,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1297. [2025-03-08 15:24:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1025 states have (on average 1.3375609756097562) internal successors, (1371), 1029 states have internal predecessors, (1371), 229 states have call successors, (229), 42 states have call predecessors, (229), 42 states have return successors, (229), 225 states have call predecessors, (229), 229 states have call successors, (229) [2025-03-08 15:24:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1829 transitions. [2025-03-08 15:24:23,294 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1829 transitions. Word has length 391 [2025-03-08 15:24:23,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:24:23,294 INFO L471 AbstractCegarLoop]: Abstraction has 1297 states and 1829 transitions. [2025-03-08 15:24:23,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.105263157894737) internal successors, (116), 18 states have internal predecessors, (116), 6 states have call successors, (61), 6 states have call predecessors, (61), 10 states have return successors, (61), 6 states have call predecessors, (61), 6 states have call successors, (61) [2025-03-08 15:24:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1829 transitions. [2025-03-08 15:24:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2025-03-08 15:24:23,297 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:24:23,297 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:24:23,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 15:24:23,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:23,497 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:24:23,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:24:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1602450907, now seen corresponding path program 1 times [2025-03-08 15:24:23,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:24:23,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237495745] [2025-03-08 15:24:23,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:23,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:24:23,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 15:24:23,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 15:24:23,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:23,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:24:23,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165723289] [2025-03-08 15:24:23,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:23,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:23,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:24:23,852 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:24:23,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 15:24:23,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 15:24:24,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 15:24:24,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:24,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:24:24,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-08 15:24:24,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:24:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3290 proven. 456 refuted. 0 times theorem prover too weak. 3574 trivial. 0 not checked. [2025-03-08 15:24:27,769 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:24:30,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:24:30,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237495745] [2025-03-08 15:24:30,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:24:30,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165723289] [2025-03-08 15:24:30,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165723289] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:24:30,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:24:30,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2025-03-08 15:24:30,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875314885] [2025-03-08 15:24:30,049 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 15:24:30,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 15:24:30,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:24:30,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 15:24:30,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 15:24:30,056 INFO L87 Difference]: Start difference. First operand 1297 states and 1829 transitions. Second operand has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 22 states have internal predecessors, (107), 5 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (61), 4 states have call predecessors, (61), 5 states have call successors, (61) [2025-03-08 15:24:39,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:24:39,094 INFO L93 Difference]: Finished difference Result 3863 states and 5427 transitions. [2025-03-08 15:24:39,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-08 15:24:39,094 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 22 states have internal predecessors, (107), 5 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (61), 4 states have call predecessors, (61), 5 states have call successors, (61) Word has length 391 [2025-03-08 15:24:39,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:24:39,112 INFO L225 Difference]: With dead ends: 3863 [2025-03-08 15:24:39,112 INFO L226 Difference]: Without dead ends: 3433 [2025-03-08 15:24:39,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=700, Invalid=3590, Unknown=0, NotChecked=0, Total=4290 [2025-03-08 15:24:39,116 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 1751 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 2882 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 3074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:24:39,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 3702 Invalid, 3074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2882 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2025-03-08 15:24:39,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2025-03-08 15:24:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 1545. [2025-03-08 15:24:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1265 states have (on average 1.3573122529644268) internal successors, (1717), 1271 states have internal predecessors, (1717), 233 states have call successors, (233), 46 states have call predecessors, (233), 46 states have return successors, (233), 227 states have call predecessors, (233), 233 states have call successors, (233) [2025-03-08 15:24:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2183 transitions. [2025-03-08 15:24:39,312 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2183 transitions. Word has length 391 [2025-03-08 15:24:39,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:24:39,315 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 2183 transitions. [2025-03-08 15:24:39,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 22 states have internal predecessors, (107), 5 states have call successors, (61), 5 states have call predecessors, (61), 7 states have return successors, (61), 4 states have call predecessors, (61), 5 states have call successors, (61) [2025-03-08 15:24:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2183 transitions. [2025-03-08 15:24:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2025-03-08 15:24:39,331 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:24:39,331 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:24:39,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 15:24:39,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:39,532 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:24:39,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:24:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1608741209, now seen corresponding path program 1 times [2025-03-08 15:24:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:24:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415726258] [2025-03-08 15:24:39,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:39,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:24:39,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 15:24:39,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 15:24:39,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:39,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:24:39,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494766698] [2025-03-08 15:24:39,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:39,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:39,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:24:39,854 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:24:39,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 15:24:39,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 15:24:40,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 15:24:40,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:40,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:24:40,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-08 15:24:40,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:24:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3122 proven. 747 refuted. 0 times theorem prover too weak. 3451 trivial. 0 not checked. [2025-03-08 15:24:44,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:24:46,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:24:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415726258] [2025-03-08 15:24:46,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:24:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494766698] [2025-03-08 15:24:46,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494766698] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:24:46,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:24:46,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2025-03-08 15:24:46,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053853425] [2025-03-08 15:24:46,137 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 15:24:46,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-08 15:24:46,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:24:46,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-08 15:24:46,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 15:24:46,139 INFO L87 Difference]: Start difference. First operand 1545 states and 2183 transitions. Second operand has 29 states, 29 states have (on average 3.896551724137931) internal successors, (113), 26 states have internal predecessors, (113), 6 states have call successors, (61), 6 states have call predecessors, (61), 9 states have return successors, (61), 6 states have call predecessors, (61), 6 states have call successors, (61) [2025-03-08 15:24:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:24:57,009 INFO L93 Difference]: Finished difference Result 3769 states and 5309 transitions. [2025-03-08 15:24:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-03-08 15:24:57,010 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.896551724137931) internal successors, (113), 26 states have internal predecessors, (113), 6 states have call successors, (61), 6 states have call predecessors, (61), 9 states have return successors, (61), 6 states have call predecessors, (61), 6 states have call successors, (61) Word has length 391 [2025-03-08 15:24:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:24:57,022 INFO L225 Difference]: With dead ends: 3769 [2025-03-08 15:24:57,022 INFO L226 Difference]: Without dead ends: 3296 [2025-03-08 15:24:57,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=888, Invalid=4514, Unknown=0, NotChecked=0, Total=5402 [2025-03-08 15:24:57,025 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 1285 mSDsluCounter, 4212 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 4156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:24:57,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 4518 Invalid, 4156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2025-03-08 15:24:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3296 states. [2025-03-08 15:24:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 1542. [2025-03-08 15:24:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1542 states, 1262 states have (on average 1.3573692551505547) internal successors, (1713), 1268 states have internal predecessors, (1713), 233 states have call successors, (233), 46 states have call predecessors, (233), 46 states have return successors, (233), 227 states have call predecessors, (233), 233 states have call successors, (233) [2025-03-08 15:24:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2179 transitions. [2025-03-08 15:24:57,141 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2179 transitions. Word has length 391 [2025-03-08 15:24:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:24:57,142 INFO L471 AbstractCegarLoop]: Abstraction has 1542 states and 2179 transitions. [2025-03-08 15:24:57,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.896551724137931) internal successors, (113), 26 states have internal predecessors, (113), 6 states have call successors, (61), 6 states have call predecessors, (61), 9 states have return successors, (61), 6 states have call predecessors, (61), 6 states have call successors, (61) [2025-03-08 15:24:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2179 transitions. [2025-03-08 15:24:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2025-03-08 15:24:57,148 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:24:57,149 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:24:57,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 15:24:57,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:57,353 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:24:57,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:24:57,354 INFO L85 PathProgramCache]: Analyzing trace with hash 597373100, now seen corresponding path program 1 times [2025-03-08 15:24:57,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:24:57,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966658742] [2025-03-08 15:24:57,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:57,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:24:57,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 15:24:57,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 15:24:57,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:57,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:24:57,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169411894] [2025-03-08 15:24:57,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:24:57,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:24:57,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:24:57,721 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:24:57,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 15:24:57,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 15:24:58,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 15:24:58,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:24:58,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:24:58,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 15:24:58,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:25:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3458 proven. 123 refuted. 0 times theorem prover too weak. 3739 trivial. 0 not checked. [2025-03-08 15:25:01,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:25:10,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:25:10,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966658742] [2025-03-08 15:25:10,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 15:25:10,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169411894] [2025-03-08 15:25:10,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169411894] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:25:10,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:25:10,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-03-08 15:25:10,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712023519] [2025-03-08 15:25:10,530 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 15:25:10,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 15:25:10,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:25:10,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 15:25:10,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=179, Unknown=1, NotChecked=0, Total=240 [2025-03-08 15:25:10,532 INFO L87 Difference]: Start difference. First operand 1542 states and 2179 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 3 states have call successors, (61), 3 states have call predecessors, (61), 4 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61)