./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-11.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-11.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 938d0421a545f95d5fd4476ad4101c37e59d7c0d9287a6793e2d4f45bec79d41 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:18:32,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:18:32,724 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:18:32,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:18:32,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:18:32,740 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:18:32,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:18:32,741 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:18:32,741 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:18:32,741 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:18:32,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:18:32,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:18:32,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:18:32,742 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:18:32,742 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:18:32,743 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:18:32,743 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:18:32,743 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:18:32,743 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:18:32,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:18:32,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:18:32,743 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:18:32,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:18:32,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:18:32,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:18:32,744 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:18:32,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:18:32,744 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:18:32,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:18:32,744 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:18:32,744 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:18:32,744 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:18:32,744 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:18:32,744 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 -> 938d0421a545f95d5fd4476ad4101c37e59d7c0d9287a6793e2d4f45bec79d41 [2025-03-08 15:18:32,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:18:32,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:18:32,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:18:32,979 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:18:32,980 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:18:32,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-11.i [2025-03-08 15:18:34,071 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc721b8ef/fe9003bd4abf4d6dbef56a06bccff397/FLAG4dd576ef6 [2025-03-08 15:18:34,365 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:18:34,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-11.i [2025-03-08 15:18:34,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc721b8ef/fe9003bd4abf4d6dbef56a06bccff397/FLAG4dd576ef6 [2025-03-08 15:18:34,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc721b8ef/fe9003bd4abf4d6dbef56a06bccff397 [2025-03-08 15:18:34,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:18:34,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:18:34,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:18:34,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:18:34,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:18:34,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ae290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34, skipping insertion in model container [2025-03-08 15:18:34,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:18:34,553 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-11.i[916,929] [2025-03-08 15:18:34,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:18:34,699 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:18:34,707 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-11.i[916,929] [2025-03-08 15:18:34,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:18:34,795 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:18:34,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34 WrapperNode [2025-03-08 15:18:34,796 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:18:34,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:18:34,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:18:34,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:18:34,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,862 INFO L138 Inliner]: procedures = 26, calls = 58, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 431 [2025-03-08 15:18:34,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:18:34,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:18:34,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:18:34,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:18:34,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,879 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,904 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 15:18:34,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,926 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,946 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:18:34,958 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:18:34,958 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:18:34,959 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:18:34,960 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (1/1) ... [2025-03-08 15:18:34,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:18:34,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:18:34,985 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 15:18:34,990 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 15:18:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:18:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:18:35,009 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:18:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:18:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:18:35,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:18:35,089 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:18:35,090 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:18:35,673 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L372: havoc property_#t~bitwise36#1;havoc property_#t~bitwise37#1;havoc property_#t~bitwise38#1;havoc property_#t~short39#1;havoc property_#t~bitwise40#1;havoc property_#t~short41#1; [2025-03-08 15:18:35,742 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2025-03-08 15:18:35,742 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:18:35,770 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:18:35,770 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:18:35,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:18:35 BoogieIcfgContainer [2025-03-08 15:18:35,770 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:18:35,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:18:35,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:18:35,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:18:35,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:18:34" (1/3) ... [2025-03-08 15:18:35,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2847fabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:18:35, skipping insertion in model container [2025-03-08 15:18:35,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:18:34" (2/3) ... [2025-03-08 15:18:35,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2847fabd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:18:35, skipping insertion in model container [2025-03-08 15:18:35,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:18:35" (3/3) ... [2025-03-08 15:18:35,779 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-11.i [2025-03-08 15:18:35,789 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:18:35,791 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-11.i that has 2 procedures, 174 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:18:35,845 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:18:35,856 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;@7ea283bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:18:35,857 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:18:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 126 states have (on average 1.4761904761904763) internal successors, (186), 127 states have internal predecessors, (186), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-08 15:18:35,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2025-03-08 15:18:35,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:35,875 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:35,876 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:35,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:35,879 INFO L85 PathProgramCache]: Analyzing trace with hash 327161117, now seen corresponding path program 1 times [2025-03-08 15:18:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:35,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730068301] [2025-03-08 15:18:35,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:35,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:35,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-03-08 15:18:36,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-03-08 15:18:36,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:36,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:18:36,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:36,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730068301] [2025-03-08 15:18:36,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730068301] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:18:36,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:18:36,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 15:18:36,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366603935] [2025-03-08 15:18:36,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:18:36,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:18:36,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:18:36,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:18:36,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:18:36,403 INFO L87 Difference]: Start difference. First operand has 174 states, 126 states have (on average 1.4761904761904763) internal successors, (186), 127 states have internal predecessors, (186), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:18:36,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:18:36,448 INFO L93 Difference]: Finished difference Result 340 states and 590 transitions. [2025-03-08 15:18:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:18:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2025-03-08 15:18:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:18:36,456 INFO L225 Difference]: With dead ends: 340 [2025-03-08 15:18:36,456 INFO L226 Difference]: Without dead ends: 169 [2025-03-08 15:18:36,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 15:18:36,463 INFO L435 NwaCegarLoop]: 259 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, 259 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 15:18:36,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:18:36,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-03-08 15:18:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2025-03-08 15:18:36,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 122 states have (on average 1.4344262295081966) internal successors, (175), 122 states have internal predecessors, (175), 45 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-08 15:18:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 265 transitions. [2025-03-08 15:18:36,514 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 265 transitions. Word has length 313 [2025-03-08 15:18:36,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:18:36,517 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 265 transitions. [2025-03-08 15:18:36,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:18:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 265 transitions. [2025-03-08 15:18:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2025-03-08 15:18:36,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:36,524 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:36,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 15:18:36,524 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:36,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash 72424572, now seen corresponding path program 1 times [2025-03-08 15:18:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:36,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346830053] [2025-03-08 15:18:36,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:36,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-03-08 15:18:36,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-03-08 15:18:36,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:36,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:18:36,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:36,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346830053] [2025-03-08 15:18:36,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346830053] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:18:36,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:18:36,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:18:36,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992008829] [2025-03-08 15:18:36,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:18:36,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:18:36,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:18:36,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:18:36,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:18:36,947 INFO L87 Difference]: Start difference. First operand 169 states and 265 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:18:37,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:18:37,227 INFO L93 Difference]: Finished difference Result 502 states and 790 transitions. [2025-03-08 15:18:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:18:37,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 313 [2025-03-08 15:18:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:18:37,231 INFO L225 Difference]: With dead ends: 502 [2025-03-08 15:18:37,231 INFO L226 Difference]: Without dead ends: 336 [2025-03-08 15:18:37,232 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 15:18:37,233 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 207 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:18:37,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 759 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:18:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2025-03-08 15:18:37,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 327. [2025-03-08 15:18:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 234 states have (on average 1.4401709401709402) internal successors, (337), 234 states have internal predecessors, (337), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-08 15:18:37,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 517 transitions. [2025-03-08 15:18:37,302 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 517 transitions. Word has length 313 [2025-03-08 15:18:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:18:37,303 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 517 transitions. [2025-03-08 15:18:37,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:18:37,303 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 517 transitions. [2025-03-08 15:18:37,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2025-03-08 15:18:37,308 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:37,308 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:37,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:18:37,308 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:37,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1792787622, now seen corresponding path program 1 times [2025-03-08 15:18:37,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:37,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533733860] [2025-03-08 15:18:37,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:37,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:37,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-08 15:18:37,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-08 15:18:37,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:37,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:18:37,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:37,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533733860] [2025-03-08 15:18:37,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533733860] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:18:37,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:18:37,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:18:37,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059740281] [2025-03-08 15:18:37,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:18:37,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:18:37,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:18:37,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:18:37,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:18:37,520 INFO L87 Difference]: Start difference. First operand 327 states and 517 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:18:37,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:18:37,640 INFO L93 Difference]: Finished difference Result 754 states and 1192 transitions. [2025-03-08 15:18:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:18:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 314 [2025-03-08 15:18:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:18:37,665 INFO L225 Difference]: With dead ends: 754 [2025-03-08 15:18:37,667 INFO L226 Difference]: Without dead ends: 540 [2025-03-08 15:18:37,668 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 15:18:37,668 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 220 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:18:37,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 614 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:18:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2025-03-08 15:18:37,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 389. [2025-03-08 15:18:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 296 states have (on average 1.4493243243243243) internal successors, (429), 296 states have internal predecessors, (429), 90 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-08 15:18:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 609 transitions. [2025-03-08 15:18:37,713 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 609 transitions. Word has length 314 [2025-03-08 15:18:37,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:18:37,714 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 609 transitions. [2025-03-08 15:18:37,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:18:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 609 transitions. [2025-03-08 15:18:37,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2025-03-08 15:18:37,717 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:37,718 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:37,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:18:37,718 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:37,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:37,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1838657299, now seen corresponding path program 1 times [2025-03-08 15:18:37,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:37,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378744234] [2025-03-08 15:18:37,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:37,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:37,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-08 15:18:38,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-08 15:18:38,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:38,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:18:39,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:39,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378744234] [2025-03-08 15:18:39,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378744234] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:18:39,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:18:39,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 15:18:39,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035388975] [2025-03-08 15:18:39,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:18:39,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 15:18:39,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:18:39,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 15:18:39,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 15:18:39,367 INFO L87 Difference]: Start difference. First operand 389 states and 609 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-08 15:18:40,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:18:40,279 INFO L93 Difference]: Finished difference Result 941 states and 1457 transitions. [2025-03-08 15:18:40,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 15:18:40,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 315 [2025-03-08 15:18:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:18:40,287 INFO L225 Difference]: With dead ends: 941 [2025-03-08 15:18:40,287 INFO L226 Difference]: Without dead ends: 693 [2025-03-08 15:18:40,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2025-03-08 15:18:40,289 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 848 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 15:18:40,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1635 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 15:18:40,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2025-03-08 15:18:40,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 444. [2025-03-08 15:18:40,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 350 states have (on average 1.4542857142857142) internal successors, (509), 350 states have internal predecessors, (509), 90 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-08 15:18:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 689 transitions. [2025-03-08 15:18:40,345 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 689 transitions. Word has length 315 [2025-03-08 15:18:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:18:40,348 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 689 transitions. [2025-03-08 15:18:40,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-08 15:18:40,348 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 689 transitions. [2025-03-08 15:18:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2025-03-08 15:18:40,351 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:40,351 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:40,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 15:18:40,351 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:40,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash -705466706, now seen corresponding path program 1 times [2025-03-08 15:18:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:40,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117740821] [2025-03-08 15:18:40,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:40,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-08 15:18:40,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-08 15:18:40,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:40,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:18:44,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:44,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117740821] [2025-03-08 15:18:44,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117740821] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:18:44,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:18:44,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 15:18:44,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687801320] [2025-03-08 15:18:44,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:18:44,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 15:18:44,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:18:44,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 15:18:44,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:18:44,694 INFO L87 Difference]: Start difference. First operand 444 states and 689 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 3 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2025-03-08 15:18:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:18:47,724 INFO L93 Difference]: Finished difference Result 968 states and 1495 transitions. [2025-03-08 15:18:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 15:18:47,725 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 3 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 315 [2025-03-08 15:18:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:18:47,728 INFO L225 Difference]: With dead ends: 968 [2025-03-08 15:18:47,728 INFO L226 Difference]: Without dead ends: 671 [2025-03-08 15:18:47,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2025-03-08 15:18:47,729 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 1345 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-08 15:18:47,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 1448 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-08 15:18:47,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2025-03-08 15:18:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 588. [2025-03-08 15:18:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 494 states have (on average 1.4817813765182186) internal successors, (732), 494 states have internal predecessors, (732), 90 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-08 15:18:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 912 transitions. [2025-03-08 15:18:47,756 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 912 transitions. Word has length 315 [2025-03-08 15:18:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:18:47,756 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 912 transitions. [2025-03-08 15:18:47,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 3 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2025-03-08 15:18:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 912 transitions. [2025-03-08 15:18:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2025-03-08 15:18:47,758 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:47,758 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:47,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 15:18:47,759 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:47,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:47,759 INFO L85 PathProgramCache]: Analyzing trace with hash -694150579, now seen corresponding path program 1 times [2025-03-08 15:18:47,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:47,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15390910] [2025-03-08 15:18:47,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:47,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:47,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-08 15:18:47,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-08 15:18:47,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:47,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:18:49,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:49,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15390910] [2025-03-08 15:18:49,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15390910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:18:49,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:18:49,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 15:18:49,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227025635] [2025-03-08 15:18:49,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:18:49,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 15:18:49,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:18:49,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 15:18:49,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:18:49,341 INFO L87 Difference]: Start difference. First operand 588 states and 912 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-08 15:18:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:18:50,073 INFO L93 Difference]: Finished difference Result 898 states and 1382 transitions. [2025-03-08 15:18:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 15:18:50,073 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 315 [2025-03-08 15:18:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:18:50,076 INFO L225 Difference]: With dead ends: 898 [2025-03-08 15:18:50,077 INFO L226 Difference]: Without dead ends: 621 [2025-03-08 15:18:50,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2025-03-08 15:18:50,079 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 743 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:18:50,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1330 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 15:18:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2025-03-08 15:18:50,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 592. [2025-03-08 15:18:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 498 states have (on average 1.4779116465863453) internal successors, (736), 498 states have internal predecessors, (736), 90 states have call successors, (90), 3 states have call predecessors, (90), 3 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-08 15:18:50,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 916 transitions. [2025-03-08 15:18:50,116 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 916 transitions. Word has length 315 [2025-03-08 15:18:50,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:18:50,117 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 916 transitions. [2025-03-08 15:18:50,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-08 15:18:50,118 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 916 transitions. [2025-03-08 15:18:50,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2025-03-08 15:18:50,119 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:50,119 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:50,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 15:18:50,119 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:50,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash 938653420, now seen corresponding path program 1 times [2025-03-08 15:18:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:50,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690667888] [2025-03-08 15:18:50,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:50,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-08 15:18:50,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-08 15:18:50,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:50,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 6 proven. 126 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-08 15:18:50,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:50,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690667888] [2025-03-08 15:18:50,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690667888] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:18:50,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820738124] [2025-03-08 15:18:50,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:50,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:18:50,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:18:50,574 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 15:18:50,576 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 15:18:50,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-08 15:18:50,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-08 15:18:50,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:50,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:50,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 15:18:50,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:18:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 384 proven. 126 refuted. 0 times theorem prover too weak. 3450 trivial. 0 not checked. [2025-03-08 15:18:51,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:18:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 6 proven. 126 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-08 15:18:51,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820738124] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:18:51,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:18:51,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-08 15:18:51,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811953748] [2025-03-08 15:18:51,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:18:51,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:18:51,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:18:51,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:18:51,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:18:51,359 INFO L87 Difference]: Start difference. First operand 592 states and 916 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2025-03-08 15:18:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:18:51,596 INFO L93 Difference]: Finished difference Result 985 states and 1520 transitions. [2025-03-08 15:18:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 15:18:51,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) Word has length 315 [2025-03-08 15:18:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:18:51,600 INFO L225 Difference]: With dead ends: 985 [2025-03-08 15:18:51,600 INFO L226 Difference]: Without dead ends: 606 [2025-03-08 15:18:51,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 628 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:18:51,603 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 124 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:18:51,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 508 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:18:51,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2025-03-08 15:18:51,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 596. [2025-03-08 15:18:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 500 states have (on average 1.448) internal successors, (724), 500 states have internal predecessors, (724), 90 states have call successors, (90), 5 states have call predecessors, (90), 5 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-08 15:18:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 904 transitions. [2025-03-08 15:18:51,633 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 904 transitions. Word has length 315 [2025-03-08 15:18:51,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:18:51,634 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 904 transitions. [2025-03-08 15:18:51,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2025-03-08 15:18:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 904 transitions. [2025-03-08 15:18:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-03-08 15:18:51,636 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:51,637 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:51,644 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 15:18:51,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:18:51,841 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:51,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:51,842 INFO L85 PathProgramCache]: Analyzing trace with hash 526635115, now seen corresponding path program 1 times [2025-03-08 15:18:51,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:51,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785407522] [2025-03-08 15:18:51,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:51,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:51,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-03-08 15:18:52,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-03-08 15:18:52,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:52,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:18:53,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785407522] [2025-03-08 15:18:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785407522] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:18:53,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:18:53,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 15:18:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270823145] [2025-03-08 15:18:53,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:18:53,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 15:18:53,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:18:53,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 15:18:53,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:18:53,705 INFO L87 Difference]: Start difference. First operand 596 states and 904 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-08 15:18:54,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:18:54,431 INFO L93 Difference]: Finished difference Result 906 states and 1364 transitions. [2025-03-08 15:18:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:18:54,432 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 317 [2025-03-08 15:18:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:18:54,437 INFO L225 Difference]: With dead ends: 906 [2025-03-08 15:18:54,438 INFO L226 Difference]: Without dead ends: 625 [2025-03-08 15:18:54,439 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-03-08 15:18:54,439 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 457 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:18:54,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1667 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 15:18:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2025-03-08 15:18:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 596. [2025-03-08 15:18:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 500 states have (on average 1.44) internal successors, (720), 500 states have internal predecessors, (720), 90 states have call successors, (90), 5 states have call predecessors, (90), 5 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-08 15:18:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 900 transitions. [2025-03-08 15:18:54,471 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 900 transitions. Word has length 317 [2025-03-08 15:18:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:18:54,472 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 900 transitions. [2025-03-08 15:18:54,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-08 15:18:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 900 transitions. [2025-03-08 15:18:54,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-03-08 15:18:54,475 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:54,475 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:54,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 15:18:54,476 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:54,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:54,476 INFO L85 PathProgramCache]: Analyzing trace with hash -396048468, now seen corresponding path program 1 times [2025-03-08 15:18:54,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:54,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66319023] [2025-03-08 15:18:54,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:54,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:54,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-03-08 15:18:54,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-03-08 15:18:54,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:54,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 111 proven. 21 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-08 15:18:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66319023] [2025-03-08 15:18:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66319023] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:18:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355782441] [2025-03-08 15:18:54,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:54,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:18:54,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:18:54,951 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 15:18:54,953 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 15:18:55,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-03-08 15:18:55,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-03-08 15:18:55,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:55,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:55,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 15:18:55,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:18:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1952 proven. 78 refuted. 0 times theorem prover too weak. 1930 trivial. 0 not checked. [2025-03-08 15:18:55,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:18:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 54 proven. 78 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-08 15:18:55,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355782441] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:18:55,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:18:55,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2025-03-08 15:18:55,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949434861] [2025-03-08 15:18:55,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:18:55,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 15:18:55,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:18:55,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 15:18:55,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-03-08 15:18:55,893 INFO L87 Difference]: Start difference. First operand 596 states and 900 transitions. Second operand has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 4 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (99), 4 states have call predecessors, (99), 4 states have call successors, (99) [2025-03-08 15:18:57,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:18:57,540 INFO L93 Difference]: Finished difference Result 2102 states and 3201 transitions. [2025-03-08 15:18:57,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-08 15:18:57,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 4 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (99), 4 states have call predecessors, (99), 4 states have call successors, (99) Word has length 317 [2025-03-08 15:18:57,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:18:57,546 INFO L225 Difference]: With dead ends: 2102 [2025-03-08 15:18:57,546 INFO L226 Difference]: Without dead ends: 1631 [2025-03-08 15:18:57,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=1572, Unknown=0, NotChecked=0, Total=2070 [2025-03-08 15:18:57,548 INFO L435 NwaCegarLoop]: 283 mSDtfsCounter, 1686 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:18:57,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 1568 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-08 15:18:57,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2025-03-08 15:18:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1346. [2025-03-08 15:18:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1203 states have (on average 1.4380714879467997) internal successors, (1730), 1204 states have internal predecessors, (1730), 127 states have call successors, (127), 15 states have call predecessors, (127), 15 states have return successors, (127), 126 states have call predecessors, (127), 127 states have call successors, (127) [2025-03-08 15:18:57,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 1984 transitions. [2025-03-08 15:18:57,593 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 1984 transitions. Word has length 317 [2025-03-08 15:18:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:18:57,593 INFO L471 AbstractCegarLoop]: Abstraction has 1346 states and 1984 transitions. [2025-03-08 15:18:57,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 16 states have internal predecessors, (206), 4 states have call successors, (97), 2 states have call predecessors, (97), 4 states have return successors, (99), 4 states have call predecessors, (99), 4 states have call successors, (99) [2025-03-08 15:18:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 1984 transitions. [2025-03-08 15:18:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2025-03-08 15:18:57,596 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:57,596 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:57,603 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 15:18:57,796 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,SelfDestructingSolverStorable8 [2025-03-08 15:18:57,797 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:57,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash -530888611, now seen corresponding path program 1 times [2025-03-08 15:18:57,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:57,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899653027] [2025-03-08 15:18:57,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:57,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:57,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-03-08 15:18:57,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-03-08 15:18:57,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:57,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:18:58,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:58,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899653027] [2025-03-08 15:18:58,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899653027] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:18:58,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:18:58,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:18:58,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447081926] [2025-03-08 15:18:58,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:18:58,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:18:58,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:18:58,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:18:58,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:18:58,205 INFO L87 Difference]: Start difference. First operand 1346 states and 1984 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:18:58,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:18:58,571 INFO L93 Difference]: Finished difference Result 1968 states and 2910 transitions. [2025-03-08 15:18:58,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:18:58,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 318 [2025-03-08 15:18:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:18:58,577 INFO L225 Difference]: With dead ends: 1968 [2025-03-08 15:18:58,577 INFO L226 Difference]: Without dead ends: 1345 [2025-03-08 15:18:58,578 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 15:18:58,579 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 305 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:18:58,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 951 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:18:58,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2025-03-08 15:18:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1292. [2025-03-08 15:18:58,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1149 states have (on average 1.4360313315926894) internal successors, (1650), 1150 states have internal predecessors, (1650), 127 states have call successors, (127), 15 states have call predecessors, (127), 15 states have return successors, (127), 126 states have call predecessors, (127), 127 states have call successors, (127) [2025-03-08 15:18:58,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1904 transitions. [2025-03-08 15:18:58,626 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1904 transitions. Word has length 318 [2025-03-08 15:18:58,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:18:58,627 INFO L471 AbstractCegarLoop]: Abstraction has 1292 states and 1904 transitions. [2025-03-08 15:18:58,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:18:58,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1904 transitions. [2025-03-08 15:18:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2025-03-08 15:18:58,629 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:18:58,629 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:18:58,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 15:18:58,629 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:18:58,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:18:58,630 INFO L85 PathProgramCache]: Analyzing trace with hash -179318659, now seen corresponding path program 1 times [2025-03-08 15:18:58,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:18:58,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028694514] [2025-03-08 15:18:58,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:58,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:18:58,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-03-08 15:18:58,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-03-08 15:18:58,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:58,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 54 proven. 78 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-08 15:18:59,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:18:59,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028694514] [2025-03-08 15:18:59,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028694514] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:18:59,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471030833] [2025-03-08 15:18:59,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:18:59,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:18:59,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:18:59,222 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 15:18:59,223 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 15:18:59,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-03-08 15:18:59,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-03-08 15:18:59,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:18:59,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:18:59,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-08 15:18:59,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:19:00,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 2088 proven. 231 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2025-03-08 15:19:00,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:19:01,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471030833] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:19:01,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 15:19:01,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 17] total 24 [2025-03-08 15:19:01,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773021909] [2025-03-08 15:19:01,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 15:19:01,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-08 15:19:01,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:01,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-08 15:19:01,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 15:19:01,396 INFO L87 Difference]: Start difference. First operand 1292 states and 1904 transitions. Second operand has 24 states, 24 states have (on average 8.25) internal successors, (198), 23 states have internal predecessors, (198), 6 states have call successors, (90), 5 states have call predecessors, (90), 8 states have return successors, (90), 6 states have call predecessors, (90), 6 states have call successors, (90) [2025-03-08 15:19:04,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:04,727 INFO L93 Difference]: Finished difference Result 3492 states and 5017 transitions. [2025-03-08 15:19:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-03-08 15:19:04,727 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.25) internal successors, (198), 23 states have internal predecessors, (198), 6 states have call successors, (90), 5 states have call predecessors, (90), 8 states have return successors, (90), 6 states have call predecessors, (90), 6 states have call successors, (90) Word has length 318 [2025-03-08 15:19:04,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:04,737 INFO L225 Difference]: With dead ends: 3492 [2025-03-08 15:19:04,737 INFO L226 Difference]: Without dead ends: 2467 [2025-03-08 15:19:04,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2389 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1424, Invalid=6586, Unknown=0, NotChecked=0, Total=8010 [2025-03-08 15:19:04,741 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 1653 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 4426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:04,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 3264 Invalid, 4426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-08 15:19:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2025-03-08 15:19:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 1939. [2025-03-08 15:19:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1720 states have (on average 1.4145348837209302) internal successors, (2433), 1725 states have internal predecessors, (2433), 191 states have call successors, (191), 27 states have call predecessors, (191), 27 states have return successors, (191), 186 states have call predecessors, (191), 191 states have call successors, (191) [2025-03-08 15:19:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 2815 transitions. [2025-03-08 15:19:04,815 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 2815 transitions. Word has length 318 [2025-03-08 15:19:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:04,816 INFO L471 AbstractCegarLoop]: Abstraction has 1939 states and 2815 transitions. [2025-03-08 15:19:04,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.25) internal successors, (198), 23 states have internal predecessors, (198), 6 states have call successors, (90), 5 states have call predecessors, (90), 8 states have return successors, (90), 6 states have call predecessors, (90), 6 states have call successors, (90) [2025-03-08 15:19:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 2815 transitions. [2025-03-08 15:19:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2025-03-08 15:19:04,819 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:04,819 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:04,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 15:19:05,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:19:05,020 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:05,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:05,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1943161053, now seen corresponding path program 1 times [2025-03-08 15:19:05,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:05,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262352131] [2025-03-08 15:19:05,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:05,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:05,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-03-08 15:19:05,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-03-08 15:19:05,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:05,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:19:05,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:05,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262352131] [2025-03-08 15:19:05,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262352131] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:05,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:19:05,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:19:05,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024111407] [2025-03-08 15:19:05,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:05,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:19:05,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:05,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:19:05,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:19:05,190 INFO L87 Difference]: Start difference. First operand 1939 states and 2815 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:19:05,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:05,265 INFO L93 Difference]: Finished difference Result 2712 states and 3912 transitions. [2025-03-08 15:19:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:19:05,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 318 [2025-03-08 15:19:05,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:05,272 INFO L225 Difference]: With dead ends: 2712 [2025-03-08 15:19:05,272 INFO L226 Difference]: Without dead ends: 1827 [2025-03-08 15:19:05,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:19:05,275 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 0 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:05,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:19:05,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2025-03-08 15:19:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1827. [2025-03-08 15:19:05,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1608 states have (on average 1.3837064676616915) internal successors, (2225), 1613 states have internal predecessors, (2225), 191 states have call successors, (191), 27 states have call predecessors, (191), 27 states have return successors, (191), 186 states have call predecessors, (191), 191 states have call successors, (191) [2025-03-08 15:19:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2607 transitions. [2025-03-08 15:19:05,366 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2607 transitions. Word has length 318 [2025-03-08 15:19:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:05,366 INFO L471 AbstractCegarLoop]: Abstraction has 1827 states and 2607 transitions. [2025-03-08 15:19:05,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:19:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2607 transitions. [2025-03-08 15:19:05,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-03-08 15:19:05,369 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:05,369 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:05,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 15:19:05,369 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:05,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1569144204, now seen corresponding path program 1 times [2025-03-08 15:19:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:05,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850654739] [2025-03-08 15:19:05,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:05,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:05,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-03-08 15:19:05,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-03-08 15:19:05,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:05,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:19:05,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:05,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850654739] [2025-03-08 15:19:05,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850654739] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:05,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:19:05,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:19:05,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628588448] [2025-03-08 15:19:05,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:05,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:19:05,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:05,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:19:05,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:19:05,641 INFO L87 Difference]: Start difference. First operand 1827 states and 2607 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:19:06,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:06,028 INFO L93 Difference]: Finished difference Result 3842 states and 5540 transitions. [2025-03-08 15:19:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:19:06,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 319 [2025-03-08 15:19:06,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:06,037 INFO L225 Difference]: With dead ends: 3842 [2025-03-08 15:19:06,037 INFO L226 Difference]: Without dead ends: 3065 [2025-03-08 15:19:06,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:19:06,039 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 395 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:06,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 858 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:19:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2025-03-08 15:19:06,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 2155. [2025-03-08 15:19:06,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1936 states have (on average 1.3920454545454546) internal successors, (2695), 1941 states have internal predecessors, (2695), 191 states have call successors, (191), 27 states have call predecessors, (191), 27 states have return successors, (191), 186 states have call predecessors, (191), 191 states have call successors, (191) [2025-03-08 15:19:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 3077 transitions. [2025-03-08 15:19:06,122 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 3077 transitions. Word has length 319 [2025-03-08 15:19:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:06,123 INFO L471 AbstractCegarLoop]: Abstraction has 2155 states and 3077 transitions. [2025-03-08 15:19:06,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:19:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 3077 transitions. [2025-03-08 15:19:06,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2025-03-08 15:19:06,126 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:06,126 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:06,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 15:19:06,126 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:06,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:06,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1275741197, now seen corresponding path program 1 times [2025-03-08 15:19:06,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:06,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34893691] [2025-03-08 15:19:06,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:06,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:06,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-03-08 15:19:06,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-03-08 15:19:06,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:06,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 48 proven. 84 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-08 15:19:07,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:07,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34893691] [2025-03-08 15:19:07,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34893691] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:19:07,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657834815] [2025-03-08 15:19:07,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:07,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:19:07,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:19:07,654 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 15:19:07,660 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 15:19:07,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 319 statements into 1 equivalence classes. [2025-03-08 15:19:08,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 319 of 319 statements. [2025-03-08 15:19:08,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:08,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:08,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-08 15:19:08,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:19:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1878 proven. 243 refuted. 0 times theorem prover too weak. 1839 trivial. 0 not checked. [2025-03-08 15:19:09,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:19:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 96 proven. 165 refuted. 0 times theorem prover too weak. 3699 trivial. 0 not checked. [2025-03-08 15:19:10,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657834815] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:19:10,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:19:10,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 19] total 47 [2025-03-08 15:19:10,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731568192] [2025-03-08 15:19:10,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:19:10,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-03-08 15:19:10,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:10,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-03-08 15:19:10,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1827, Unknown=0, NotChecked=0, Total=2162 [2025-03-08 15:19:10,997 INFO L87 Difference]: Start difference. First operand 2155 states and 3077 transitions. Second operand has 47 states, 46 states have (on average 5.195652173913044) internal successors, (239), 45 states have internal predecessors, (239), 10 states have call successors, (135), 5 states have call predecessors, (135), 9 states have return successors, (135), 10 states have call predecessors, (135), 10 states have call successors, (135) [2025-03-08 15:19:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:35,915 INFO L93 Difference]: Finished difference Result 18383 states and 26045 transitions. [2025-03-08 15:19:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2025-03-08 15:19:35,916 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 5.195652173913044) internal successors, (239), 45 states have internal predecessors, (239), 10 states have call successors, (135), 5 states have call predecessors, (135), 9 states have return successors, (135), 10 states have call predecessors, (135), 10 states have call successors, (135) Word has length 319 [2025-03-08 15:19:35,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:35,959 INFO L225 Difference]: With dead ends: 18383 [2025-03-08 15:19:35,959 INFO L226 Difference]: Without dead ends: 17072 [2025-03-08 15:19:35,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 958 GetRequests, 651 SyntacticMatches, 1 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41889 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=14441, Invalid=80115, Unknown=0, NotChecked=0, Total=94556 [2025-03-08 15:19:35,976 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 11433 mSDsluCounter, 10578 mSDsCounter, 0 mSdLazyCounter, 16961 mSolverCounterSat, 3755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11484 SdHoareTripleChecker+Valid, 11322 SdHoareTripleChecker+Invalid, 20716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3755 IncrementalHoareTripleChecker+Valid, 16961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:35,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11484 Valid, 11322 Invalid, 20716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3755 Valid, 16961 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2025-03-08 15:19:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17072 states. [2025-03-08 15:19:36,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17072 to 3807. [2025-03-08 15:19:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3426 states have (on average 1.4025102159953298) internal successors, (4805), 3436 states have internal predecessors, (4805), 333 states have call successors, (333), 47 states have call predecessors, (333), 47 states have return successors, (333), 323 states have call predecessors, (333), 333 states have call successors, (333) [2025-03-08 15:19:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 5471 transitions. [2025-03-08 15:19:36,360 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 5471 transitions. Word has length 319 [2025-03-08 15:19:36,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:36,361 INFO L471 AbstractCegarLoop]: Abstraction has 3807 states and 5471 transitions. [2025-03-08 15:19:36,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 5.195652173913044) internal successors, (239), 45 states have internal predecessors, (239), 10 states have call successors, (135), 5 states have call predecessors, (135), 9 states have return successors, (135), 10 states have call predecessors, (135), 10 states have call successors, (135) [2025-03-08 15:19:36,361 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 5471 transitions. [2025-03-08 15:19:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-03-08 15:19:36,369 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:36,369 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:36,379 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 15:19:36,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:19:36,569 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:36,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1398462873, now seen corresponding path program 1 times [2025-03-08 15:19:36,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:36,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264757556] [2025-03-08 15:19:36,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:36,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:36,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-08 15:19:36,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-08 15:19:36,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:36,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:19:36,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264757556] [2025-03-08 15:19:36,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264757556] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:36,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:19:36,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 15:19:36,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024165009] [2025-03-08 15:19:36,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:36,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 15:19:36,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:36,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 15:19:36,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 15:19:36,924 INFO L87 Difference]: Start difference. First operand 3807 states and 5471 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:19:37,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:37,604 INFO L93 Difference]: Finished difference Result 6671 states and 9538 transitions. [2025-03-08 15:19:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 15:19:37,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) Word has length 320 [2025-03-08 15:19:37,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:37,614 INFO L225 Difference]: With dead ends: 6671 [2025-03-08 15:19:37,615 INFO L226 Difference]: Without dead ends: 4549 [2025-03-08 15:19:37,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2025-03-08 15:19:37,620 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 783 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:37,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1303 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 15:19:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2025-03-08 15:19:37,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4365. [2025-03-08 15:19:37,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 3984 states have (on average 1.4066265060240963) internal successors, (5604), 3994 states have internal predecessors, (5604), 333 states have call successors, (333), 47 states have call predecessors, (333), 47 states have return successors, (333), 323 states have call predecessors, (333), 333 states have call successors, (333) [2025-03-08 15:19:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 6270 transitions. [2025-03-08 15:19:37,839 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 6270 transitions. Word has length 320 [2025-03-08 15:19:37,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:37,840 INFO L471 AbstractCegarLoop]: Abstraction has 4365 states and 6270 transitions. [2025-03-08 15:19:37,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 1 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 1 states have call predecessors, (45), 1 states have call successors, (45) [2025-03-08 15:19:37,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 6270 transitions. [2025-03-08 15:19:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-03-08 15:19:37,844 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:37,845 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:37,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 15:19:37,845 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:37,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1105059866, now seen corresponding path program 1 times [2025-03-08 15:19:37,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482775928] [2025-03-08 15:19:37,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:37,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-08 15:19:37,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-08 15:19:37,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:37,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:19:39,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:39,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482775928] [2025-03-08 15:19:39,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482775928] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:39,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:19:39,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 15:19:39,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177469497] [2025-03-08 15:19:39,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:39,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 15:19:39,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:39,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 15:19:39,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 15:19:39,489 INFO L87 Difference]: Start difference. First operand 4365 states and 6270 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-08 15:19:40,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:40,380 INFO L93 Difference]: Finished difference Result 6761 states and 9662 transitions. [2025-03-08 15:19:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:19:40,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 320 [2025-03-08 15:19:40,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:40,389 INFO L225 Difference]: With dead ends: 6761 [2025-03-08 15:19:40,389 INFO L226 Difference]: Without dead ends: 4455 [2025-03-08 15:19:40,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-03-08 15:19:40,393 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 976 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:40,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1261 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 15:19:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4455 states. [2025-03-08 15:19:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4455 to 4287. [2025-03-08 15:19:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4287 states, 3906 states have (on average 1.4045058883768562) internal successors, (5486), 3916 states have internal predecessors, (5486), 333 states have call successors, (333), 47 states have call predecessors, (333), 47 states have return successors, (333), 323 states have call predecessors, (333), 333 states have call successors, (333) [2025-03-08 15:19:40,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4287 states to 4287 states and 6152 transitions. [2025-03-08 15:19:40,582 INFO L78 Accepts]: Start accepts. Automaton has 4287 states and 6152 transitions. Word has length 320 [2025-03-08 15:19:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:40,583 INFO L471 AbstractCegarLoop]: Abstraction has 4287 states and 6152 transitions. [2025-03-08 15:19:40,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2025-03-08 15:19:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4287 states and 6152 transitions. [2025-03-08 15:19:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-03-08 15:19:40,586 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:40,586 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:40,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 15:19:40,587 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:40,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1418800248, now seen corresponding path program 1 times [2025-03-08 15:19:40,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:40,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458506505] [2025-03-08 15:19:40,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:40,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:40,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-08 15:19:40,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-08 15:19:40,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:40,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2025-03-08 15:19:43,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458506505] [2025-03-08 15:19:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458506505] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:19:43,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:19:43,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 15:19:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344290663] [2025-03-08 15:19:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:19:43,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 15:19:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:43,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 15:19:43,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-08 15:19:43,618 INFO L87 Difference]: Start difference. First operand 4287 states and 6152 transitions. Second operand has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 3 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2025-03-08 15:19:45,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:45,752 INFO L93 Difference]: Finished difference Result 7289 states and 10361 transitions. [2025-03-08 15:19:45,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 15:19:45,753 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 3 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 320 [2025-03-08 15:19:45,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:45,763 INFO L225 Difference]: With dead ends: 7289 [2025-03-08 15:19:45,763 INFO L226 Difference]: Without dead ends: 5207 [2025-03-08 15:19:45,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2025-03-08 15:19:45,767 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 2268 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:45,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 1680 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-08 15:19:45,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2025-03-08 15:19:46,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 4469. [2025-03-08 15:19:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4088 states have (on average 1.4045988258317026) internal successors, (5742), 4098 states have internal predecessors, (5742), 333 states have call successors, (333), 47 states have call predecessors, (333), 47 states have return successors, (333), 323 states have call predecessors, (333), 333 states have call successors, (333) [2025-03-08 15:19:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 6408 transitions. [2025-03-08 15:19:46,096 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 6408 transitions. Word has length 320 [2025-03-08 15:19:46,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:46,097 INFO L471 AbstractCegarLoop]: Abstraction has 4469 states and 6408 transitions. [2025-03-08 15:19:46,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.0) internal successors, (98), 14 states have internal predecessors, (98), 3 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2025-03-08 15:19:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 6408 transitions. [2025-03-08 15:19:46,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-03-08 15:19:46,102 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:46,103 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:46,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 15:19:46,103 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:46,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:46,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1125397241, now seen corresponding path program 1 times [2025-03-08 15:19:46,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:46,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134389671] [2025-03-08 15:19:46,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:46,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:46,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-08 15:19:46,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-08 15:19:46,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:46,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 105 proven. 27 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-08 15:19:46,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:19:46,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134389671] [2025-03-08 15:19:46,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134389671] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:19:46,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564994782] [2025-03-08 15:19:46,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:46,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:19:46,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:19:46,427 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 15:19:46,431 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 15:19:46,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-08 15:19:46,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-08 15:19:46,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:46,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:19:46,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 15:19:46,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:19:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 1374 proven. 27 refuted. 0 times theorem prover too weak. 2559 trivial. 0 not checked. [2025-03-08 15:19:46,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:19:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3960 backedges. 105 proven. 27 refuted. 0 times theorem prover too weak. 3828 trivial. 0 not checked. [2025-03-08 15:19:46,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564994782] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:19:46,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:19:46,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-08 15:19:46,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148182526] [2025-03-08 15:19:46,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:19:46,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:19:46,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:19:46,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:19:46,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:19:46,892 INFO L87 Difference]: Start difference. First operand 4469 states and 6408 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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 15:19:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:19:47,378 INFO L93 Difference]: Finished difference Result 8655 states and 12408 transitions. [2025-03-08 15:19:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:19:47,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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 320 [2025-03-08 15:19:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:19:47,391 INFO L225 Difference]: With dead ends: 8655 [2025-03-08 15:19:47,391 INFO L226 Difference]: Without dead ends: 4527 [2025-03-08 15:19:47,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 637 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:19:47,395 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 179 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:19:47,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 705 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:19:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2025-03-08 15:19:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 4489. [2025-03-08 15:19:47,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 4103 states have (on average 1.3987326346575677) internal successors, (5739), 4113 states have internal predecessors, (5739), 333 states have call successors, (333), 52 states have call predecessors, (333), 52 states have return successors, (333), 323 states have call predecessors, (333), 333 states have call successors, (333) [2025-03-08 15:19:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6405 transitions. [2025-03-08 15:19:47,595 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6405 transitions. Word has length 320 [2025-03-08 15:19:47,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:19:47,595 INFO L471 AbstractCegarLoop]: Abstraction has 4489 states and 6405 transitions. [2025-03-08 15:19:47,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 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 15:19:47,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6405 transitions. [2025-03-08 15:19:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2025-03-08 15:19:47,598 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:19:47,599 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:19:47,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 15:19:47,799 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,SelfDestructingSolverStorable17 [2025-03-08 15:19:47,799 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:19:47,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:19:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1100560732, now seen corresponding path program 1 times [2025-03-08 15:19:47,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:19:47,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544124754] [2025-03-08 15:19:47,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:19:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:19:47,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 320 statements into 1 equivalence classes. [2025-03-08 15:19:47,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 320 of 320 statements. [2025-03-08 15:19:47,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:19:47,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat