./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.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-24.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 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:20:14,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:20:14,915 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:20:14,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:20:14,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:20:14,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:20:14,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:20:14,939 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:20:14,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:20:14,940 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:20:14,940 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:20:14,940 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:20:14,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:20:14,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:20:14,941 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:20:14,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:20:14,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:20:14,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:20:14,942 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:20:14,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:20:14,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:20:14,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:20:14,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:20:14,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:20:14,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:20:14,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:20:14,942 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 -> 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d [2025-03-08 15:20:15,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:20:15,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:20:15,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:20:15,252 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:20:15,252 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:20:15,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2025-03-08 15:20:16,412 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfd161809/7a3ed956b45344c8af1eaf7f68621117/FLAGe725b42b3 [2025-03-08 15:20:16,697 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:20:16,700 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2025-03-08 15:20:16,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfd161809/7a3ed956b45344c8af1eaf7f68621117/FLAGe725b42b3 [2025-03-08 15:20:16,986 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfd161809/7a3ed956b45344c8af1eaf7f68621117 [2025-03-08 15:20:16,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:20:16,989 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:20:16,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:20:16,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:20:16,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:20:16,996 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:20:16" (1/1) ... [2025-03-08 15:20:16,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6812484a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:16, skipping insertion in model container [2025-03-08 15:20:16,997 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:20:16" (1/1) ... [2025-03-08 15:20:17,023 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:20:17,131 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-24.i[916,929] [2025-03-08 15:20:17,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:20:17,231 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:20:17,240 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-24.i[916,929] [2025-03-08 15:20:17,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:20:17,313 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:20:17,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17 WrapperNode [2025-03-08 15:20:17,314 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:20:17,314 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:20:17,315 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:20:17,315 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:20:17,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,370 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 429 [2025-03-08 15:20:17,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:20:17,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:20:17,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:20:17,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:20:17,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,410 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 15:20:17,412 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,420 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:20:17,435 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:20:17,435 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:20:17,435 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:20:17,436 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (1/1) ... [2025-03-08 15:20:17,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:20:17,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:17,461 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 15:20:17,463 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 15:20:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:20:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:20:17,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:20:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:20:17,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:20:17,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:20:17,557 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:20:17,558 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:20:18,024 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L371: havoc property_#t~ite35#1;havoc property_#t~bitwise34#1;havoc property_#t~short36#1;havoc property_#t~ite38#1;havoc property_#t~bitwise37#1;havoc property_#t~short39#1;havoc property_#t~ite41#1;havoc property_#t~bitwise40#1;havoc property_#t~short42#1; [2025-03-08 15:20:18,087 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2025-03-08 15:20:18,087 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:20:18,112 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:20:18,113 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-08 15:20:18,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:20:18 BoogieIcfgContainer [2025-03-08 15:20:18,113 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:20:18,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:20:18,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:20:18,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:20:18,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:20:16" (1/3) ... [2025-03-08 15:20:18,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a5e348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:20:18, skipping insertion in model container [2025-03-08 15:20:18,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:20:17" (2/3) ... [2025-03-08 15:20:18,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a5e348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:20:18, skipping insertion in model container [2025-03-08 15:20:18,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:20:18" (3/3) ... [2025-03-08 15:20:18,122 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-24.i [2025-03-08 15:20:18,132 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:20:18,134 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-24.i that has 2 procedures, 181 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:20:18,180 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:20:18,190 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;@dd84c51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:20:18,190 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:20:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 135 states have internal predecessors, (203), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-08 15:20:18,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2025-03-08 15:20:18,209 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:18,209 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:18,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:18,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash 396823663, now seen corresponding path program 1 times [2025-03-08 15:20:18,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:18,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082587244] [2025-03-08 15:20:18,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:18,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:18,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-03-08 15:20:18,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-03-08 15:20:18,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:18,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-03-08 15:20:18,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082587244] [2025-03-08 15:20:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082587244] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292060706] [2025-03-08 15:20:18,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:18,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:18,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:18,600 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 15:20:18,602 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 15:20:18,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-03-08 15:20:18,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-03-08 15:20:18,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:18,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:18,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:20:18,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-03-08 15:20:18,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:20:18,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292060706] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:18,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:20:18,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:20:18,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011794574] [2025-03-08 15:20:18,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:18,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:20:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:18,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:20:18,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:20:18,864 INFO L87 Difference]: Start difference. First operand has 181 states, 134 states have (on average 1.5149253731343284) internal successors, (203), 135 states have internal predecessors, (203), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-08 15:20:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:18,910 INFO L93 Difference]: Finished difference Result 356 states and 621 transitions. [2025-03-08 15:20:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:20:18,913 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 298 [2025-03-08 15:20:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:18,919 INFO L225 Difference]: With dead ends: 356 [2025-03-08 15:20:18,920 INFO L226 Difference]: Without dead ends: 178 [2025-03-08 15:20:18,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 299 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 15:20:18,930 INFO L435 NwaCegarLoop]: 280 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, 280 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 15:20:18,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:20:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-03-08 15:20:18,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2025-03-08 15:20:18,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 132 states have (on average 1.5) internal successors, (198), 132 states have internal predecessors, (198), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-08 15:20:18,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 286 transitions. [2025-03-08 15:20:18,969 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 286 transitions. Word has length 298 [2025-03-08 15:20:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:18,973 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 286 transitions. [2025-03-08 15:20:18,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-08 15:20:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 286 transitions. [2025-03-08 15:20:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2025-03-08 15:20:18,981 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:18,981 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:20:18,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 15:20:19,182 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 15:20:19,182 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:19,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:19,183 INFO L85 PathProgramCache]: Analyzing trace with hash 24568551, now seen corresponding path program 1 times [2025-03-08 15:20:19,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:19,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50835851] [2025-03-08 15:20:19,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:19,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:19,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 298 statements into 1 equivalence classes. [2025-03-08 15:20:19,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 298 of 298 statements. [2025-03-08 15:20:19,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:19,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:19,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:19,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50835851] [2025-03-08 15:20:19,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50835851] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:19,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:19,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:20:19,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528348259] [2025-03-08 15:20:19,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:19,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:20:19,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:19,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:20:19,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:20:19,585 INFO L87 Difference]: Start difference. First operand 178 states and 286 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:19,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:19,845 INFO L93 Difference]: Finished difference Result 529 states and 853 transitions. [2025-03-08 15:20:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:20:19,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 298 [2025-03-08 15:20:19,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:19,851 INFO L225 Difference]: With dead ends: 529 [2025-03-08 15:20:19,851 INFO L226 Difference]: Without dead ends: 354 [2025-03-08 15:20:19,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:20:19,852 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 219 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:19,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 809 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:20:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2025-03-08 15:20:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 263. [2025-03-08 15:20:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 172 states have (on average 1.4127906976744187) internal successors, (243), 172 states have internal predecessors, (243), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-03-08 15:20:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 419 transitions. [2025-03-08 15:20:19,903 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 419 transitions. Word has length 298 [2025-03-08 15:20:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:19,905 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 419 transitions. [2025-03-08 15:20:19,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 419 transitions. [2025-03-08 15:20:19,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2025-03-08 15:20:19,910 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:19,911 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:19,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:20:19,911 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:19,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1587446251, now seen corresponding path program 1 times [2025-03-08 15:20:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:19,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438509359] [2025-03-08 15:20:19,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:19,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:19,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 299 statements into 1 equivalence classes. [2025-03-08 15:20:19,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 299 of 299 statements. [2025-03-08 15:20:19,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:19,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:20,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:20,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438509359] [2025-03-08 15:20:20,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438509359] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:20,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:20,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:20:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667918998] [2025-03-08 15:20:20,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:20,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:20:20,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:20,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:20:20,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:20:20,119 INFO L87 Difference]: Start difference. First operand 263 states and 419 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:20,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:20,231 INFO L93 Difference]: Finished difference Result 597 states and 955 transitions. [2025-03-08 15:20:20,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:20:20,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2025-03-08 15:20:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:20,237 INFO L225 Difference]: With dead ends: 597 [2025-03-08 15:20:20,237 INFO L226 Difference]: Without dead ends: 422 [2025-03-08 15:20:20,238 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 15:20:20,239 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 250 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:20,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 663 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:20:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2025-03-08 15:20:20,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2025-03-08 15:20:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 227 states have internal predecessors, (326), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-03-08 15:20:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 502 transitions. [2025-03-08 15:20:20,278 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 502 transitions. Word has length 299 [2025-03-08 15:20:20,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:20,278 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 502 transitions. [2025-03-08 15:20:20,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:20,278 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 502 transitions. [2025-03-08 15:20:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2025-03-08 15:20:20,281 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:20,282 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:20,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:20:20,282 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:20,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:20,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1971233418, now seen corresponding path program 1 times [2025-03-08 15:20:20,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:20,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29443492] [2025-03-08 15:20:20,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:20,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:20,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 299 statements into 1 equivalence classes. [2025-03-08 15:20:20,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 299 of 299 statements. [2025-03-08 15:20:20,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:20,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:20,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:20,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29443492] [2025-03-08 15:20:20,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29443492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:20,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:20,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:20:20,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716505962] [2025-03-08 15:20:20,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:20,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:20:20,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:20,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:20:20,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:20:20,480 INFO L87 Difference]: Start difference. First operand 318 states and 502 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:20,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:20,607 INFO L93 Difference]: Finished difference Result 652 states and 1028 transitions. [2025-03-08 15:20:20,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:20:20,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2025-03-08 15:20:20,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:20,612 INFO L225 Difference]: With dead ends: 652 [2025-03-08 15:20:20,613 INFO L226 Difference]: Without dead ends: 422 [2025-03-08 15:20:20,613 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 15:20:20,614 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 248 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:20,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 488 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:20:20,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2025-03-08 15:20:20,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2025-03-08 15:20:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.3920704845814977) internal successors, (316), 227 states have internal predecessors, (316), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2025-03-08 15:20:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 492 transitions. [2025-03-08 15:20:20,650 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 492 transitions. Word has length 299 [2025-03-08 15:20:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:20,652 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 492 transitions. [2025-03-08 15:20:20,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 492 transitions. [2025-03-08 15:20:20,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-03-08 15:20:20,655 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:20,656 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:20,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 15:20:20,656 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:20,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:20,657 INFO L85 PathProgramCache]: Analyzing trace with hash 369026821, now seen corresponding path program 1 times [2025-03-08 15:20:20,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:20,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171068841] [2025-03-08 15:20:20,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:20,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:20,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-08 15:20:20,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-08 15:20:20,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:20,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:20,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:20,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171068841] [2025-03-08 15:20:20,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171068841] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:20,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:20,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:20:20,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925025174] [2025-03-08 15:20:20,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:20,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:20:20,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:20,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:20:20,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:20:20,929 INFO L87 Difference]: Start difference. First operand 318 states and 492 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:20,993 INFO L93 Difference]: Finished difference Result 779 states and 1205 transitions. [2025-03-08 15:20:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:20:20,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2025-03-08 15:20:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:20,997 INFO L225 Difference]: With dead ends: 779 [2025-03-08 15:20:20,997 INFO L226 Difference]: Without dead ends: 549 [2025-03-08 15:20:20,998 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 15:20:20,999 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 187 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:20,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 523 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:20:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2025-03-08 15:20:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 545. [2025-03-08 15:20:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 409 states have (on average 1.41320293398533) internal successors, (578), 409 states have internal predecessors, (578), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2025-03-08 15:20:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 842 transitions. [2025-03-08 15:20:21,041 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 842 transitions. Word has length 300 [2025-03-08 15:20:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:21,042 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 842 transitions. [2025-03-08 15:20:21,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 842 transitions. [2025-03-08 15:20:21,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-03-08 15:20:21,047 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:21,048 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:21,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 15:20:21,050 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:21,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:21,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1394518820, now seen corresponding path program 1 times [2025-03-08 15:20:21,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:21,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598484118] [2025-03-08 15:20:21,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:21,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:21,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-08 15:20:21,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-08 15:20:21,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:21,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:22,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:22,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598484118] [2025-03-08 15:20:22,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598484118] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:22,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:22,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:20:22,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199677079] [2025-03-08 15:20:22,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:22,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:20:22,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:22,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:20:22,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:20:22,138 INFO L87 Difference]: Start difference. First operand 545 states and 842 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-08 15:20:22,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:22,425 INFO L93 Difference]: Finished difference Result 1457 states and 2252 transitions. [2025-03-08 15:20:22,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:20:22,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 300 [2025-03-08 15:20:22,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:22,432 INFO L225 Difference]: With dead ends: 1457 [2025-03-08 15:20:22,432 INFO L226 Difference]: Without dead ends: 1001 [2025-03-08 15:20:22,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:20:22,434 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 228 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:22,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 946 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:20:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2025-03-08 15:20:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 997. [2025-03-08 15:20:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 771 states have (on average 1.4215304798962387) internal successors, (1096), 771 states have internal predecessors, (1096), 220 states have call successors, (220), 5 states have call predecessors, (220), 5 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2025-03-08 15:20:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1536 transitions. [2025-03-08 15:20:22,513 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1536 transitions. Word has length 300 [2025-03-08 15:20:22,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:22,513 INFO L471 AbstractCegarLoop]: Abstraction has 997 states and 1536 transitions. [2025-03-08 15:20:22,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-08 15:20:22,514 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1536 transitions. [2025-03-08 15:20:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-03-08 15:20:22,516 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:22,516 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:22,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 15:20:22,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:22,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:22,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1425538627, now seen corresponding path program 1 times [2025-03-08 15:20:22,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:22,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392603024] [2025-03-08 15:20:22,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:22,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:22,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-08 15:20:22,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-08 15:20:22,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:22,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-08 15:20:23,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:23,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392603024] [2025-03-08 15:20:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392603024] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:23,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169427045] [2025-03-08 15:20:23,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:23,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:23,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:23,179 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 15:20:23,181 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 15:20:23,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-08 15:20:23,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-08 15:20:23,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:23,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:23,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 15:20:23,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1629 proven. 90 refuted. 0 times theorem prover too weak. 2065 trivial. 0 not checked. [2025-03-08 15:20:24,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:20:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-08 15:20:24,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169427045] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:20:24,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:20:24,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 16 [2025-03-08 15:20:24,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731314533] [2025-03-08 15:20:24,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:20:24,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 15:20:24,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:24,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 15:20:24,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-03-08 15:20:24,384 INFO L87 Difference]: Start difference. First operand 997 states and 1536 transitions. Second operand has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2025-03-08 15:20:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:25,374 INFO L93 Difference]: Finished difference Result 2845 states and 4346 transitions. [2025-03-08 15:20:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 15:20:25,375 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) Word has length 300 [2025-03-08 15:20:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:25,385 INFO L225 Difference]: With dead ends: 2845 [2025-03-08 15:20:25,386 INFO L226 Difference]: Without dead ends: 1937 [2025-03-08 15:20:25,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2025-03-08 15:20:25,389 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 885 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:25,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 2106 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 15:20:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2025-03-08 15:20:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1013. [2025-03-08 15:20:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 786 states have (on average 1.4236641221374047) internal successors, (1119), 786 states have internal predecessors, (1119), 220 states have call successors, (220), 6 states have call predecessors, (220), 6 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2025-03-08 15:20:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1559 transitions. [2025-03-08 15:20:25,486 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1559 transitions. Word has length 300 [2025-03-08 15:20:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:25,486 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1559 transitions. [2025-03-08 15:20:25,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2025-03-08 15:20:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1559 transitions. [2025-03-08 15:20:25,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-03-08 15:20:25,490 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:25,490 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:25,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 15:20:25,695 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,SelfDestructingSolverStorable6 [2025-03-08 15:20:25,695 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:25,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1407848670, now seen corresponding path program 1 times [2025-03-08 15:20:25,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:25,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983577035] [2025-03-08 15:20:25,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:25,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-08 15:20:25,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-08 15:20:25,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:25,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-08 15:20:26,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:26,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983577035] [2025-03-08 15:20:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983577035] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:26,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110617326] [2025-03-08 15:20:26,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:26,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:26,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:26,650 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 15:20:26,651 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 15:20:26,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-08 15:20:26,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-08 15:20:26,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:26,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:26,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-08 15:20:26,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2056 proven. 174 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2025-03-08 15:20:27,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:20:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 306 proven. 192 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2025-03-08 15:20:28,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110617326] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:20:28,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:20:28,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 17] total 38 [2025-03-08 15:20:28,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657726467] [2025-03-08 15:20:28,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:20:28,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-08 15:20:28,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:28,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-08 15:20:28,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1179, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 15:20:28,873 INFO L87 Difference]: Start difference. First operand 1013 states and 1559 transitions. Second operand has 38 states, 35 states have (on average 5.885714285714286) internal successors, (206), 34 states have internal predecessors, (206), 13 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 13 states have call successors, (119) [2025-03-08 15:20:36,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:36,221 INFO L93 Difference]: Finished difference Result 6125 states and 8981 transitions. [2025-03-08 15:20:36,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2025-03-08 15:20:36,221 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 5.885714285714286) internal successors, (206), 34 states have internal predecessors, (206), 13 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 13 states have call successors, (119) Word has length 300 [2025-03-08 15:20:36,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:36,242 INFO L225 Difference]: With dead ends: 6125 [2025-03-08 15:20:36,242 INFO L226 Difference]: Without dead ends: 5217 [2025-03-08 15:20:36,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12522 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4921, Invalid=29119, Unknown=0, NotChecked=0, Total=34040 [2025-03-08 15:20:36,252 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 5084 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 4992 mSolverCounterSat, 1512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5097 SdHoareTripleChecker+Valid, 4548 SdHoareTripleChecker+Invalid, 6504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1512 IncrementalHoareTripleChecker+Valid, 4992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:36,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5097 Valid, 4548 Invalid, 6504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1512 Valid, 4992 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-08 15:20:36,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5217 states. [2025-03-08 15:20:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5217 to 2711. [2025-03-08 15:20:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2184 states have (on average 1.3896520146520146) internal successors, (3035), 2188 states have internal predecessors, (3035), 464 states have call successors, (464), 62 states have call predecessors, (464), 62 states have return successors, (464), 460 states have call predecessors, (464), 464 states have call successors, (464) [2025-03-08 15:20:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3963 transitions. [2025-03-08 15:20:36,454 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3963 transitions. Word has length 300 [2025-03-08 15:20:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:36,454 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3963 transitions. [2025-03-08 15:20:36,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 5.885714285714286) internal successors, (206), 34 states have internal predecessors, (206), 13 states have call successors, (118), 5 states have call predecessors, (118), 11 states have return successors, (119), 12 states have call predecessors, (119), 13 states have call successors, (119) [2025-03-08 15:20:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3963 transitions. [2025-03-08 15:20:36,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-03-08 15:20:36,458 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:36,458 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:36,466 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 15:20:36,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:36,659 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:36,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:36,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1232975686, now seen corresponding path program 1 times [2025-03-08 15:20:36,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:36,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350218243] [2025-03-08 15:20:36,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:36,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:36,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-08 15:20:36,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-08 15:20:36,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:36,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:36,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:36,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350218243] [2025-03-08 15:20:36,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350218243] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:36,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:36,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:20:36,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347765115] [2025-03-08 15:20:36,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:36,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:20:36,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:36,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:20:36,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:20:36,829 INFO L87 Difference]: Start difference. First operand 2711 states and 3963 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:36,968 INFO L93 Difference]: Finished difference Result 5411 states and 7934 transitions. [2025-03-08 15:20:36,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:20:36,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2025-03-08 15:20:36,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:36,984 INFO L225 Difference]: With dead ends: 5411 [2025-03-08 15:20:36,984 INFO L226 Difference]: Without dead ends: 3139 [2025-03-08 15:20:36,987 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 15:20:36,987 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 58 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:36,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 525 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:20:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2025-03-08 15:20:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2711. [2025-03-08 15:20:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2184 states have (on average 1.3823260073260073) internal successors, (3019), 2188 states have internal predecessors, (3019), 464 states have call successors, (464), 62 states have call predecessors, (464), 62 states have return successors, (464), 460 states have call predecessors, (464), 464 states have call successors, (464) [2025-03-08 15:20:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3947 transitions. [2025-03-08 15:20:37,128 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3947 transitions. Word has length 300 [2025-03-08 15:20:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:37,129 INFO L471 AbstractCegarLoop]: Abstraction has 2711 states and 3947 transitions. [2025-03-08 15:20:37,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3947 transitions. [2025-03-08 15:20:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-03-08 15:20:37,132 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:37,132 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:37,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 15:20:37,132 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:37,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1985785321, now seen corresponding path program 1 times [2025-03-08 15:20:37,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:37,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979024026] [2025-03-08 15:20:37,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:37,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-08 15:20:37,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-08 15:20:37,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:37,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:37,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:37,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979024026] [2025-03-08 15:20:37,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979024026] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:37,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:37,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:20:37,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920735206] [2025-03-08 15:20:37,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:37,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:20:37,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:37,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:20:37,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:20:37,554 INFO L87 Difference]: Start difference. First operand 2711 states and 3947 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:37,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:37,833 INFO L93 Difference]: Finished difference Result 4963 states and 7210 transitions. [2025-03-08 15:20:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:20:37,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2025-03-08 15:20:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:37,850 INFO L225 Difference]: With dead ends: 4963 [2025-03-08 15:20:37,850 INFO L226 Difference]: Without dead ends: 2783 [2025-03-08 15:20:37,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:20:37,855 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 3 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:37,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 740 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:20:37,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2025-03-08 15:20:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2735. [2025-03-08 15:20:38,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2208 states have (on average 1.3781702898550725) internal successors, (3043), 2212 states have internal predecessors, (3043), 464 states have call successors, (464), 62 states have call predecessors, (464), 62 states have return successors, (464), 460 states have call predecessors, (464), 464 states have call successors, (464) [2025-03-08 15:20:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 3971 transitions. [2025-03-08 15:20:38,030 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 3971 transitions. Word has length 301 [2025-03-08 15:20:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:38,030 INFO L471 AbstractCegarLoop]: Abstraction has 2735 states and 3971 transitions. [2025-03-08 15:20:38,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 3971 transitions. [2025-03-08 15:20:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-03-08 15:20:38,034 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:38,034 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:38,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 15:20:38,035 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:38,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash 512230616, now seen corresponding path program 1 times [2025-03-08 15:20:38,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:38,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789969009] [2025-03-08 15:20:38,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:38,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:38,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-08 15:20:38,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-08 15:20:38,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:38,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:38,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789969009] [2025-03-08 15:20:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789969009] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:38,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:38,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:20:38,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201493777] [2025-03-08 15:20:38,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:38,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:20:38,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:38,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:20:38,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:20:38,467 INFO L87 Difference]: Start difference. First operand 2735 states and 3971 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:38,807 INFO L93 Difference]: Finished difference Result 6233 states and 9038 transitions. [2025-03-08 15:20:38,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:20:38,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2025-03-08 15:20:38,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:38,822 INFO L225 Difference]: With dead ends: 6233 [2025-03-08 15:20:38,822 INFO L226 Difference]: Without dead ends: 3881 [2025-03-08 15:20:38,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:20:38,828 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 93 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:38,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1050 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:20:38,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3881 states. [2025-03-08 15:20:39,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3881 to 3739. [2025-03-08 15:20:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 3139 states have (on average 1.3787830519273654) internal successors, (4328), 3155 states have internal predecessors, (4328), 524 states have call successors, (524), 75 states have call predecessors, (524), 75 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-03-08 15:20:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 5376 transitions. [2025-03-08 15:20:39,042 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 5376 transitions. Word has length 301 [2025-03-08 15:20:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:39,043 INFO L471 AbstractCegarLoop]: Abstraction has 3739 states and 5376 transitions. [2025-03-08 15:20:39,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-03-08 15:20:39,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 5376 transitions. [2025-03-08 15:20:39,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-08 15:20:39,051 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:39,051 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:39,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 15:20:39,051 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:39,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:39,052 INFO L85 PathProgramCache]: Analyzing trace with hash -487503666, now seen corresponding path program 1 times [2025-03-08 15:20:39,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:39,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767027614] [2025-03-08 15:20:39,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:39,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:39,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:20:39,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:20:39,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:39,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:39,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767027614] [2025-03-08 15:20:39,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767027614] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:39,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:39,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 15:20:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952999660] [2025-03-08 15:20:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:39,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 15:20:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:39,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 15:20:39,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:20:39,620 INFO L87 Difference]: Start difference. First operand 3739 states and 5376 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-08 15:20:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:40,222 INFO L93 Difference]: Finished difference Result 7421 states and 10719 transitions. [2025-03-08 15:20:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 15:20:40,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 302 [2025-03-08 15:20:40,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:40,246 INFO L225 Difference]: With dead ends: 7421 [2025-03-08 15:20:40,247 INFO L226 Difference]: Without dead ends: 4897 [2025-03-08 15:20:40,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-08 15:20:40,253 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 526 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:40,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1340 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:20:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4897 states. [2025-03-08 15:20:40,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4897 to 3739. [2025-03-08 15:20:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 3139 states have (on average 1.3781459063395987) internal successors, (4326), 3155 states have internal predecessors, (4326), 524 states have call successors, (524), 75 states have call predecessors, (524), 75 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-03-08 15:20:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 5374 transitions. [2025-03-08 15:20:40,505 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 5374 transitions. Word has length 302 [2025-03-08 15:20:40,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:40,505 INFO L471 AbstractCegarLoop]: Abstraction has 3739 states and 5374 transitions. [2025-03-08 15:20:40,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-08 15:20:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 5374 transitions. [2025-03-08 15:20:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-08 15:20:40,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:40,509 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:40,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 15:20:40,510 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:40,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:40,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2106723151, now seen corresponding path program 1 times [2025-03-08 15:20:40,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:40,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507618507] [2025-03-08 15:20:40,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:40,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:40,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:20:40,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:20:40,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:40,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:41,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:41,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507618507] [2025-03-08 15:20:41,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507618507] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:41,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:41,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 15:20:41,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692304774] [2025-03-08 15:20:41,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:41,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 15:20:41,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:41,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 15:20:41,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 15:20:41,503 INFO L87 Difference]: Start difference. First operand 3739 states and 5374 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2025-03-08 15:20:42,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:42,783 INFO L93 Difference]: Finished difference Result 8297 states and 11989 transitions. [2025-03-08 15:20:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:20:42,783 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 302 [2025-03-08 15:20:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:42,799 INFO L225 Difference]: With dead ends: 8297 [2025-03-08 15:20:42,799 INFO L226 Difference]: Without dead ends: 5781 [2025-03-08 15:20:42,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2025-03-08 15:20:42,828 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 1184 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:42,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 1789 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 15:20:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5781 states. [2025-03-08 15:20:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5781 to 4145. [2025-03-08 15:20:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 3542 states have (on average 1.3893280632411067) internal successors, (4921), 3558 states have internal predecessors, (4921), 524 states have call successors, (524), 78 states have call predecessors, (524), 78 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-03-08 15:20:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 5969 transitions. [2025-03-08 15:20:43,065 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 5969 transitions. Word has length 302 [2025-03-08 15:20:43,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:43,067 INFO L471 AbstractCegarLoop]: Abstraction has 4145 states and 5969 transitions. [2025-03-08 15:20:43,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2025-03-08 15:20:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 5969 transitions. [2025-03-08 15:20:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-08 15:20:43,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:43,072 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:43,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 15:20:43,072 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:43,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:43,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1658026512, now seen corresponding path program 1 times [2025-03-08 15:20:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:43,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285787770] [2025-03-08 15:20:43,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:43,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:43,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:20:43,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:20:43,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:43,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-03-08 15:20:44,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:44,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285787770] [2025-03-08 15:20:44,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285787770] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:20:44,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:20:44,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 15:20:44,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719743191] [2025-03-08 15:20:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:20:44,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 15:20:44,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:44,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 15:20:44,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 15:20:44,128 INFO L87 Difference]: Start difference. First operand 4145 states and 5969 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-08 15:20:44,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:44,834 INFO L93 Difference]: Finished difference Result 7531 states and 10900 transitions. [2025-03-08 15:20:44,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 15:20:44,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 302 [2025-03-08 15:20:44,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:44,848 INFO L225 Difference]: With dead ends: 7531 [2025-03-08 15:20:44,849 INFO L226 Difference]: Without dead ends: 5015 [2025-03-08 15:20:44,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:20:44,853 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 532 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:44,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1368 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 15:20:44,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5015 states. [2025-03-08 15:20:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5015 to 4141. [2025-03-08 15:20:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 3538 states have (on average 1.3892029395138497) internal successors, (4915), 3554 states have internal predecessors, (4915), 524 states have call successors, (524), 78 states have call predecessors, (524), 78 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-03-08 15:20:45,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 5963 transitions. [2025-03-08 15:20:45,137 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 5963 transitions. Word has length 302 [2025-03-08 15:20:45,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:45,137 INFO L471 AbstractCegarLoop]: Abstraction has 4141 states and 5963 transitions. [2025-03-08 15:20:45,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2025-03-08 15:20:45,137 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 5963 transitions. [2025-03-08 15:20:45,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-08 15:20:45,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:45,142 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:45,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 15:20:45,142 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:45,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:45,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1009912967, now seen corresponding path program 1 times [2025-03-08 15:20:45,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:45,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812788149] [2025-03-08 15:20:45,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:45,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:45,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:20:45,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:20:45,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:45,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-08 15:20:45,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812788149] [2025-03-08 15:20:45,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812788149] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030856300] [2025-03-08 15:20:45,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:45,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:45,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:45,762 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 15:20:45,764 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 15:20:45,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:20:45,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:20:45,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:45,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:45,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 15:20:45,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1429 proven. 30 refuted. 0 times theorem prover too weak. 2325 trivial. 0 not checked. [2025-03-08 15:20:46,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:20:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-08 15:20:46,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030856300] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:20:46,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:20:46,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-03-08 15:20:46,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437402171] [2025-03-08 15:20:46,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:20:46,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 15:20:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:46,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 15:20:46,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:20:46,264 INFO L87 Difference]: Start difference. First operand 4141 states and 5963 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2025-03-08 15:20:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:47,197 INFO L93 Difference]: Finished difference Result 10122 states and 14453 transitions. [2025-03-08 15:20:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 15:20:47,198 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 302 [2025-03-08 15:20:47,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:47,214 INFO L225 Difference]: With dead ends: 10122 [2025-03-08 15:20:47,214 INFO L226 Difference]: Without dead ends: 6303 [2025-03-08 15:20:47,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2025-03-08 15:20:47,221 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 1166 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:47,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 735 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 15:20:47,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2025-03-08 15:20:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 3155. [2025-03-08 15:20:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 2543 states have (on average 1.3389697208022022) internal successors, (3405), 2559 states have internal predecessors, (3405), 524 states have call successors, (524), 87 states have call predecessors, (524), 87 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-03-08 15:20:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 4453 transitions. [2025-03-08 15:20:47,560 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 4453 transitions. Word has length 302 [2025-03-08 15:20:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:47,561 INFO L471 AbstractCegarLoop]: Abstraction has 3155 states and 4453 transitions. [2025-03-08 15:20:47,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2025-03-08 15:20:47,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 4453 transitions. [2025-03-08 15:20:47,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-08 15:20:47,563 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:47,563 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:47,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 15:20:47,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 15:20:47,764 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:47,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 499941334, now seen corresponding path program 1 times [2025-03-08 15:20:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:47,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455743851] [2025-03-08 15:20:47,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:47,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:47,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:20:47,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:20:47,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:47,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 90 proven. 39 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-03-08 15:20:48,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:48,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455743851] [2025-03-08 15:20:48,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455743851] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:48,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123435743] [2025-03-08 15:20:48,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:48,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:48,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:48,369 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 15:20:48,371 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 15:20:48,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:20:48,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:20:48,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:48,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:48,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 15:20:48,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2508 proven. 183 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2025-03-08 15:20:49,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:20:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 186 proven. 192 refuted. 0 times theorem prover too weak. 3406 trivial. 0 not checked. [2025-03-08 15:20:50,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123435743] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:20:50,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:20:50,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 15] total 36 [2025-03-08 15:20:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760647687] [2025-03-08 15:20:50,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:20:50,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-08 15:20:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:50,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-08 15:20:50,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 15:20:50,335 INFO L87 Difference]: Start difference. First operand 3155 states and 4453 transitions. Second operand has 36 states, 33 states have (on average 5.848484848484849) internal successors, (193), 34 states have internal predecessors, (193), 14 states have call successors, (132), 6 states have call predecessors, (132), 11 states have return successors, (132), 11 states have call predecessors, (132), 14 states have call successors, (132) [2025-03-08 15:20:51,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:51,865 INFO L93 Difference]: Finished difference Result 6727 states and 9467 transitions. [2025-03-08 15:20:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-08 15:20:51,865 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 5.848484848484849) internal successors, (193), 34 states have internal predecessors, (193), 14 states have call successors, (132), 6 states have call predecessors, (132), 11 states have return successors, (132), 11 states have call predecessors, (132), 14 states have call successors, (132) Word has length 302 [2025-03-08 15:20:51,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:51,876 INFO L225 Difference]: With dead ends: 6727 [2025-03-08 15:20:51,876 INFO L226 Difference]: Without dead ends: 3713 [2025-03-08 15:20:51,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=865, Invalid=2557, Unknown=0, NotChecked=0, Total=3422 [2025-03-08 15:20:51,881 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 1430 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:51,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1653 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 15:20:51,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2025-03-08 15:20:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3163. [2025-03-08 15:20:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3163 states, 2549 states have (on average 1.3366025892506865) internal successors, (3407), 2565 states have internal predecessors, (3407), 524 states have call successors, (524), 89 states have call predecessors, (524), 89 states have return successors, (524), 508 states have call predecessors, (524), 524 states have call successors, (524) [2025-03-08 15:20:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4455 transitions. [2025-03-08 15:20:52,166 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4455 transitions. Word has length 302 [2025-03-08 15:20:52,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:52,167 INFO L471 AbstractCegarLoop]: Abstraction has 3163 states and 4455 transitions. [2025-03-08 15:20:52,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 5.848484848484849) internal successors, (193), 34 states have internal predecessors, (193), 14 states have call successors, (132), 6 states have call predecessors, (132), 11 states have return successors, (132), 11 states have call predecessors, (132), 14 states have call successors, (132) [2025-03-08 15:20:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4455 transitions. [2025-03-08 15:20:52,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-08 15:20:52,170 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:52,170 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:52,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 15:20:52,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 15:20:52,371 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:52,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:52,371 INFO L85 PathProgramCache]: Analyzing trace with hash -524752587, now seen corresponding path program 1 times [2025-03-08 15:20:52,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:52,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666958739] [2025-03-08 15:20:52,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:52,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:52,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:20:52,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:20:52,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:52,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 81 proven. 171 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2025-03-08 15:20:53,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:20:53,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666958739] [2025-03-08 15:20:53,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666958739] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:53,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159079121] [2025-03-08 15:20:53,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:53,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:20:53,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:20:53,309 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 15:20:53,312 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 15:20:53,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:20:53,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:20:53,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:53,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:20:53,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-08 15:20:53,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:20:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1695 proven. 252 refuted. 0 times theorem prover too weak. 1837 trivial. 0 not checked. [2025-03-08 15:20:54,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:20:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159079121] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:20:55,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 15:20:55,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 23 [2025-03-08 15:20:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074723055] [2025-03-08 15:20:55,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 15:20:55,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 15:20:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:20:55,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 15:20:55,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 15:20:55,405 INFO L87 Difference]: Start difference. First operand 3163 states and 4455 transitions. Second operand has 23 states, 22 states have (on average 7.409090909090909) internal successors, (163), 22 states have internal predecessors, (163), 7 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 6 states have call predecessors, (88), 7 states have call successors, (88) [2025-03-08 15:20:57,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:20:57,040 INFO L93 Difference]: Finished difference Result 10079 states and 14023 transitions. [2025-03-08 15:20:57,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-08 15:20:57,041 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 7.409090909090909) internal successors, (163), 22 states have internal predecessors, (163), 7 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 6 states have call predecessors, (88), 7 states have call successors, (88) Word has length 302 [2025-03-08 15:20:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:20:57,060 INFO L225 Difference]: With dead ends: 10079 [2025-03-08 15:20:57,060 INFO L226 Difference]: Without dead ends: 7521 [2025-03-08 15:20:57,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=662, Invalid=2200, Unknown=0, NotChecked=0, Total=2862 [2025-03-08 15:20:57,067 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 766 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 15:20:57,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2487 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 15:20:57,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7521 states. [2025-03-08 15:20:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7521 to 6699. [2025-03-08 15:20:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 5356 states have (on average 1.315160567587752) internal successors, (7044), 5404 states have internal predecessors, (7044), 1148 states have call successors, (1148), 194 states have call predecessors, (1148), 194 states have return successors, (1148), 1100 states have call predecessors, (1148), 1148 states have call successors, (1148) [2025-03-08 15:20:57,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9340 transitions. [2025-03-08 15:20:57,678 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9340 transitions. Word has length 302 [2025-03-08 15:20:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:20:57,678 INFO L471 AbstractCegarLoop]: Abstraction has 6699 states and 9340 transitions. [2025-03-08 15:20:57,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 7.409090909090909) internal successors, (163), 22 states have internal predecessors, (163), 7 states have call successors, (88), 5 states have call predecessors, (88), 7 states have return successors, (88), 6 states have call predecessors, (88), 7 states have call successors, (88) [2025-03-08 15:20:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9340 transitions. [2025-03-08 15:20:57,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-08 15:20:57,682 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:20:57,682 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:57,710 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 15:20:57,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-08 15:20:57,883 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:20:57,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:20:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1973263350, now seen corresponding path program 1 times [2025-03-08 15:20:57,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:20:57,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693402463] [2025-03-08 15:20:57,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:20:57,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:20:57,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:20:58,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:20:58,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:20:58,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 225 proven. 255 refuted. 0 times theorem prover too weak. 3304 trivial. 0 not checked. [2025-03-08 15:21:01,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:21:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693402463] [2025-03-08 15:21:01,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693402463] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:21:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800538748] [2025-03-08 15:21:01,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:01,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:01,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:21:01,159 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 15:21:01,161 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 15:21:01,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:21:01,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:21:01,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:01,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:01,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 84 conjuncts are in the unsatisfiable core [2025-03-08 15:21:01,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:21:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2180 proven. 507 refuted. 0 times theorem prover too weak. 1097 trivial. 0 not checked. [2025-03-08 15:21:04,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:21:07,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800538748] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:21:07,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 15:21:07,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 38] total 56 [2025-03-08 15:21:07,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552695207] [2025-03-08 15:21:07,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 15:21:07,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-03-08 15:21:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:21:07,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-03-08 15:21:07,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=585, Invalid=3837, Unknown=0, NotChecked=0, Total=4422 [2025-03-08 15:21:07,596 INFO L87 Difference]: Start difference. First operand 6699 states and 9340 transitions. Second operand has 56 states, 52 states have (on average 3.7115384615384617) internal successors, (193), 50 states have internal predecessors, (193), 20 states have call successors, (88), 11 states have call predecessors, (88), 15 states have return successors, (88), 16 states have call predecessors, (88), 20 states have call successors, (88) [2025-03-08 15:21:13,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:21:13,076 INFO L93 Difference]: Finished difference Result 13647 states and 18924 transitions. [2025-03-08 15:21:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2025-03-08 15:21:13,077 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 52 states have (on average 3.7115384615384617) internal successors, (193), 50 states have internal predecessors, (193), 20 states have call successors, (88), 11 states have call predecessors, (88), 15 states have return successors, (88), 16 states have call predecessors, (88), 20 states have call successors, (88) Word has length 302 [2025-03-08 15:21:13,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:21:13,096 INFO L225 Difference]: With dead ends: 13647 [2025-03-08 15:21:13,096 INFO L226 Difference]: Without dead ends: 7481 [2025-03-08 15:21:13,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2488, Invalid=13514, Unknown=0, NotChecked=0, Total=16002 [2025-03-08 15:21:13,108 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 2974 mSDsluCounter, 3762 mSDsCounter, 0 mSdLazyCounter, 4600 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2974 SdHoareTripleChecker+Valid, 3930 SdHoareTripleChecker+Invalid, 5096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 4600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:21:13,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2974 Valid, 3930 Invalid, 5096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 4600 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-08 15:21:13,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7481 states. [2025-03-08 15:21:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7481 to 6647. [2025-03-08 15:21:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6647 states, 5301 states have (on average 1.309375589511413) internal successors, (6941), 5349 states have internal predecessors, (6941), 1148 states have call successors, (1148), 197 states have call predecessors, (1148), 197 states have return successors, (1148), 1100 states have call predecessors, (1148), 1148 states have call successors, (1148) [2025-03-08 15:21:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6647 states to 6647 states and 9237 transitions. [2025-03-08 15:21:13,757 INFO L78 Accepts]: Start accepts. Automaton has 6647 states and 9237 transitions. Word has length 302 [2025-03-08 15:21:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:21:13,757 INFO L471 AbstractCegarLoop]: Abstraction has 6647 states and 9237 transitions. [2025-03-08 15:21:13,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 52 states have (on average 3.7115384615384617) internal successors, (193), 50 states have internal predecessors, (193), 20 states have call successors, (88), 11 states have call predecessors, (88), 15 states have return successors, (88), 16 states have call predecessors, (88), 20 states have call successors, (88) [2025-03-08 15:21:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 6647 states and 9237 transitions. [2025-03-08 15:21:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2025-03-08 15:21:13,760 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:21:13,761 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:13,769 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 15:21:13,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:13,962 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:21:13,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:21:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash 828557110, now seen corresponding path program 1 times [2025-03-08 15:21:13,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:21:13,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004981615] [2025-03-08 15:21:13,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:13,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:21:13,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:21:14,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:21:14,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:14,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 15:21:14,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326556168] [2025-03-08 15:21:14,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:21:14,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:21:14,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:21:14,215 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 15:21:14,216 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 15:21:14,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 302 statements into 1 equivalence classes. [2025-03-08 15:21:14,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 302 of 302 statements. [2025-03-08 15:21:14,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:21:14,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:21:14,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-03-08 15:21:14,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:21:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2056 proven. 174 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2025-03-08 15:21:15,215 INFO L312 TraceCheckSpWp]: Computing backward predicates...