./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-27.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_amount500_file-27.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5acf4253b443244094cfe64cde0a882806db433781b0bda7a83218841032b1a3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:42:17,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:42:17,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:42:18,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:42:18,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:42:18,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:42:18,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:42:18,019 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:42:18,020 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:42:18,020 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:42:18,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:42:18,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:42:18,021 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:42:18,021 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:42:18,021 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:42:18,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:42:18,021 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:42:18,022 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:42:18,023 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:42:18,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:42:18,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:42:18,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:42:18,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:42:18,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:42:18,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:42:18,023 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:42:18,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:42:18,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:42:18,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:42:18,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:42:18,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:42:18,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:42:18,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:42:18,024 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 -> 5acf4253b443244094cfe64cde0a882806db433781b0bda7a83218841032b1a3 [2025-03-08 15:42:18,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:42:18,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:42:18,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:42:18,230 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:42:18,230 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:42:18,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-27.i [2025-03-08 15:42:19,352 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d0256f1/c512e51bb7b549cc8de9e2f48588c4ca/FLAG7ec10e755 [2025-03-08 15:42:19,700 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:42:19,700 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-27.i [2025-03-08 15:42:19,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d0256f1/c512e51bb7b549cc8de9e2f48588c4ca/FLAG7ec10e755 [2025-03-08 15:42:19,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91d0256f1/c512e51bb7b549cc8de9e2f48588c4ca [2025-03-08 15:42:19,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:42:19,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:42:19,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:42:19,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:42:19,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:42:19,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:42:19" (1/1) ... [2025-03-08 15:42:19,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520af962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:19, skipping insertion in model container [2025-03-08 15:42:19,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:42:19" (1/1) ... [2025-03-08 15:42:19,980 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:42:20,097 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_amount500_file-27.i[916,929] [2025-03-08 15:42:20,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:42:20,309 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:42:20,317 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_amount500_file-27.i[916,929] [2025-03-08 15:42:20,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:42:20,422 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:42:20,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20 WrapperNode [2025-03-08 15:42:20,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:42:20,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:42:20,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:42:20,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:42:20,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,511 INFO L138 Inliner]: procedures = 26, calls = 103, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 737 [2025-03-08 15:42:20,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:42:20,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:42:20,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:42:20,512 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:42:20,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,601 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 15:42:20,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,625 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,652 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:42:20,653 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:42:20,654 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:42:20,654 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:42:20,655 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (1/1) ... [2025-03-08 15:42:20,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:42:20,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:42:20,688 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 15:42:20,698 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 15:42:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:42:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:42:20,719 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:42:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:42:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:42:20,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:42:20,846 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:42:20,848 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:42:21,639 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L667: havoc property_#t~bitwise62#1;havoc property_#t~bitwise63#1;havoc property_#t~short64#1;havoc property_#t~bitwise65#1;havoc property_#t~short66#1;havoc property_#t~bitwise67#1;havoc property_#t~short68#1;havoc property_#t~short69#1; [2025-03-08 15:42:21,792 INFO L? ?]: Removed 88 outVars from TransFormulas that were not future-live. [2025-03-08 15:42:21,793 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:42:21,820 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:42:21,823 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:42:21,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:42:21 BoogieIcfgContainer [2025-03-08 15:42:21,823 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:42:21,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:42:21,825 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:42:21,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:42:21,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:42:19" (1/3) ... [2025-03-08 15:42:21,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581ae646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:42:21, skipping insertion in model container [2025-03-08 15:42:21,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:42:20" (2/3) ... [2025-03-08 15:42:21,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581ae646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:42:21, skipping insertion in model container [2025-03-08 15:42:21,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:42:21" (3/3) ... [2025-03-08 15:42:21,830 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-27.i [2025-03-08 15:42:21,840 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:42:21,843 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-27.i that has 2 procedures, 294 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:42:21,901 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:42:21,911 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;@6d3d9b71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:42:21,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:42:21,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 294 states, 201 states have (on average 1.507462686567164) internal successors, (303), 202 states have internal predecessors, (303), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-08 15:42:21,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2025-03-08 15:42:21,944 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:21,945 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:21,946 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:21,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:21,951 INFO L85 PathProgramCache]: Analyzing trace with hash 911699290, now seen corresponding path program 1 times [2025-03-08 15:42:21,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:21,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33266662] [2025-03-08 15:42:21,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:22,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 589 statements into 1 equivalence classes. [2025-03-08 15:42:22,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 589 of 589 statements. [2025-03-08 15:42:22,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:22,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 15842 trivial. 0 not checked. [2025-03-08 15:42:22,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:22,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33266662] [2025-03-08 15:42:22,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33266662] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:42:22,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824488077] [2025-03-08 15:42:22,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:22,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:42:22,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:42:22,545 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 15:42:22,547 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 15:42:22,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 589 statements into 1 equivalence classes. [2025-03-08 15:42:22,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 589 of 589 statements. [2025-03-08 15:42:22,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:22,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:22,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 1396 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:42:22,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:42:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 15842 trivial. 0 not checked. [2025-03-08 15:42:23,036 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:42:23,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824488077] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:42:23,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:42:23,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:42:23,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890770177] [2025-03-08 15:42:23,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:42:23,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:42:23,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:23,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:42:23,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:42:23,067 INFO L87 Difference]: Start difference. First operand has 294 states, 201 states have (on average 1.507462686567164) internal successors, (303), 202 states have internal predecessors, (303), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) Second operand has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) [2025-03-08 15:42:23,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:23,142 INFO L93 Difference]: Finished difference Result 582 states and 1051 transitions. [2025-03-08 15:42:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:42:23,146 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) Word has length 589 [2025-03-08 15:42:23,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:23,153 INFO L225 Difference]: With dead ends: 582 [2025-03-08 15:42:23,153 INFO L226 Difference]: Without dead ends: 291 [2025-03-08 15:42:23,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 590 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 15:42:23,162 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:23,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:42:23,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2025-03-08 15:42:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2025-03-08 15:42:23,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 199 states have (on average 1.4974874371859297) internal successors, (298), 199 states have internal predecessors, (298), 90 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2025-03-08 15:42:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 478 transitions. [2025-03-08 15:42:23,239 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 478 transitions. Word has length 589 [2025-03-08 15:42:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:23,242 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 478 transitions. [2025-03-08 15:42:23,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 2 states have call successors, (90) [2025-03-08 15:42:23,243 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 478 transitions. [2025-03-08 15:42:23,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2025-03-08 15:42:23,255 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:23,255 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:23,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 15:42:23,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 15:42:23,456 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:23,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:23,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1376288522, now seen corresponding path program 1 times [2025-03-08 15:42:23,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:23,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365584429] [2025-03-08 15:42:23,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:23,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:23,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 589 statements into 1 equivalence classes. [2025-03-08 15:42:23,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 589 of 589 statements. [2025-03-08 15:42:23,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:23,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:24,184 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2025-03-08 15:42:24,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:24,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365584429] [2025-03-08 15:42:24,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365584429] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:42:24,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:42:24,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:42:24,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648258416] [2025-03-08 15:42:24,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:42:24,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:42:24,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:24,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:42:24,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:42:24,188 INFO L87 Difference]: Start difference. First operand 291 states and 478 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:24,364 INFO L93 Difference]: Finished difference Result 732 states and 1205 transitions. [2025-03-08 15:42:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:42:24,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 589 [2025-03-08 15:42:24,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:24,371 INFO L225 Difference]: With dead ends: 732 [2025-03-08 15:42:24,371 INFO L226 Difference]: Without dead ends: 444 [2025-03-08 15:42:24,372 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 15:42:24,373 INFO L435 NwaCegarLoop]: 534 mSDtfsCounter, 236 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:24,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 977 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:42:24,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2025-03-08 15:42:24,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 441. [2025-03-08 15:42:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 320 states have (on average 1.525) internal successors, (488), 321 states have internal predecessors, (488), 118 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2025-03-08 15:42:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 724 transitions. [2025-03-08 15:42:24,428 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 724 transitions. Word has length 589 [2025-03-08 15:42:24,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:24,429 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 724 transitions. [2025-03-08 15:42:24,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:24,430 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 724 transitions. [2025-03-08 15:42:24,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2025-03-08 15:42:24,440 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:24,440 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:24,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 15:42:24,441 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:24,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:24,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2147478780, now seen corresponding path program 1 times [2025-03-08 15:42:24,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:24,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742743878] [2025-03-08 15:42:24,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:24,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:24,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 590 statements into 1 equivalence classes. [2025-03-08 15:42:24,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 590 of 590 statements. [2025-03-08 15:42:24,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:24,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2025-03-08 15:42:24,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:24,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742743878] [2025-03-08 15:42:24,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742743878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:42:24,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:42:24,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:42:24,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908211794] [2025-03-08 15:42:24,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:42:24,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:42:24,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:24,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:42:24,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:42:24,966 INFO L87 Difference]: Start difference. First operand 441 states and 724 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:25,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:25,087 INFO L93 Difference]: Finished difference Result 1303 states and 2142 transitions. [2025-03-08 15:42:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:42:25,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 590 [2025-03-08 15:42:25,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:25,099 INFO L225 Difference]: With dead ends: 1303 [2025-03-08 15:42:25,099 INFO L226 Difference]: Without dead ends: 865 [2025-03-08 15:42:25,104 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 15:42:25,104 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 431 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:25,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 921 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:42:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2025-03-08 15:42:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 553. [2025-03-08 15:42:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.5902777777777777) internal successors, (687), 433 states have internal predecessors, (687), 118 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2025-03-08 15:42:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 923 transitions. [2025-03-08 15:42:25,169 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 923 transitions. Word has length 590 [2025-03-08 15:42:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:25,172 INFO L471 AbstractCegarLoop]: Abstraction has 553 states and 923 transitions. [2025-03-08 15:42:25,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 923 transitions. [2025-03-08 15:42:25,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2025-03-08 15:42:25,182 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:25,182 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:25,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:42:25,182 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:25,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:25,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1936137603, now seen corresponding path program 1 times [2025-03-08 15:42:25,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:25,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96637567] [2025-03-08 15:42:25,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:25,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:25,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 590 statements into 1 equivalence classes. [2025-03-08 15:42:25,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 590 of 590 statements. [2025-03-08 15:42:25,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:25,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2025-03-08 15:42:27,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:27,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96637567] [2025-03-08 15:42:27,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96637567] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:42:27,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:42:27,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:42:27,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813669016] [2025-03-08 15:42:27,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:42:27,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:42:27,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:27,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:42:27,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:42:27,042 INFO L87 Difference]: Start difference. First operand 553 states and 923 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:27,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:27,354 INFO L93 Difference]: Finished difference Result 2063 states and 3450 transitions. [2025-03-08 15:42:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:42:27,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 590 [2025-03-08 15:42:27,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:27,367 INFO L225 Difference]: With dead ends: 2063 [2025-03-08 15:42:27,367 INFO L226 Difference]: Without dead ends: 1513 [2025-03-08 15:42:27,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:42:27,370 INFO L435 NwaCegarLoop]: 596 mSDtfsCounter, 694 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:27,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1468 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:42:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2025-03-08 15:42:27,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1209. [2025-03-08 15:42:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 997 states have (on average 1.6158475426278835) internal successors, (1611), 1000 states have internal predecessors, (1611), 207 states have call successors, (207), 4 states have call predecessors, (207), 4 states have return successors, (207), 204 states have call predecessors, (207), 207 states have call successors, (207) [2025-03-08 15:42:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 2025 transitions. [2025-03-08 15:42:27,478 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 2025 transitions. Word has length 590 [2025-03-08 15:42:27,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:27,479 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 2025 transitions. [2025-03-08 15:42:27,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:27,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 2025 transitions. [2025-03-08 15:42:27,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2025-03-08 15:42:27,488 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:27,489 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:27,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 15:42:27,489 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:27,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1787578460, now seen corresponding path program 1 times [2025-03-08 15:42:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:27,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27788440] [2025-03-08 15:42:27,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:27,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:27,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 590 statements into 1 equivalence classes. [2025-03-08 15:42:27,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 590 of 590 statements. [2025-03-08 15:42:27,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:27,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2025-03-08 15:42:27,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27788440] [2025-03-08 15:42:27,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27788440] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:42:27,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:42:27,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:42:27,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489328600] [2025-03-08 15:42:27,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:42:27,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:42:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:27,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:42:27,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:42:27,797 INFO L87 Difference]: Start difference. First operand 1209 states and 2025 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:27,911 INFO L93 Difference]: Finished difference Result 2464 states and 4123 transitions. [2025-03-08 15:42:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:42:27,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 590 [2025-03-08 15:42:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:27,920 INFO L225 Difference]: With dead ends: 2464 [2025-03-08 15:42:27,920 INFO L226 Difference]: Without dead ends: 1258 [2025-03-08 15:42:27,923 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 15:42:27,924 INFO L435 NwaCegarLoop]: 709 mSDtfsCounter, 367 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:27,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1166 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:42:27,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2025-03-08 15:42:27,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 799. [2025-03-08 15:42:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 677 states have (on average 1.6144756277695715) internal successors, (1093), 678 states have internal predecessors, (1093), 118 states have call successors, (118), 3 states have call predecessors, (118), 3 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2025-03-08 15:42:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1329 transitions. [2025-03-08 15:42:27,976 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1329 transitions. Word has length 590 [2025-03-08 15:42:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:27,976 INFO L471 AbstractCegarLoop]: Abstraction has 799 states and 1329 transitions. [2025-03-08 15:42:27,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1329 transitions. [2025-03-08 15:42:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2025-03-08 15:42:27,986 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:27,987 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:27,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 15:42:27,987 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:27,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2069379333, now seen corresponding path program 1 times [2025-03-08 15:42:27,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:27,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374657644] [2025-03-08 15:42:27,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:27,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:28,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 590 statements into 1 equivalence classes. [2025-03-08 15:42:28,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 590 of 590 statements. [2025-03-08 15:42:28,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:28,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2025-03-08 15:42:29,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:29,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374657644] [2025-03-08 15:42:29,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374657644] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:42:29,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:42:29,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:42:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589011957] [2025-03-08 15:42:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:42:29,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:42:29,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:29,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:42:29,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:42:29,139 INFO L87 Difference]: Start difference. First operand 799 states and 1329 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:29,589 INFO L93 Difference]: Finished difference Result 3301 states and 5503 transitions. [2025-03-08 15:42:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:42:29,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 590 [2025-03-08 15:42:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:29,603 INFO L225 Difference]: With dead ends: 3301 [2025-03-08 15:42:29,603 INFO L226 Difference]: Without dead ends: 2505 [2025-03-08 15:42:29,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 15:42:29,607 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 1252 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:29,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 2517 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 15:42:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2025-03-08 15:42:29,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 803. [2025-03-08 15:42:29,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 681 states have (on average 1.6123348017621146) internal successors, (1098), 682 states have internal predecessors, (1098), 118 states have call successors, (118), 3 states have call predecessors, (118), 3 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2025-03-08 15:42:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1334 transitions. [2025-03-08 15:42:29,665 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1334 transitions. Word has length 590 [2025-03-08 15:42:29,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:29,666 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1334 transitions. [2025-03-08 15:42:29,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:29,666 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1334 transitions. [2025-03-08 15:42:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2025-03-08 15:42:29,673 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:29,673 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:29,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 15:42:29,673 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:29,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:29,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2049041958, now seen corresponding path program 1 times [2025-03-08 15:42:29,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:29,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152582507] [2025-03-08 15:42:29,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:29,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:29,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 590 statements into 1 equivalence classes. [2025-03-08 15:42:30,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 590 of 590 statements. [2025-03-08 15:42:30,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:30,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 81 proven. 186 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:31,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:31,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152582507] [2025-03-08 15:42:31,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152582507] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:42:31,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703115212] [2025-03-08 15:42:31,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:31,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:42:31,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:42:31,479 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 15:42:31,481 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 15:42:31,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 590 statements into 1 equivalence classes. [2025-03-08 15:42:31,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 590 of 590 statements. [2025-03-08 15:42:31,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:31,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:31,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 15:42:31,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:42:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 9831 proven. 360 refuted. 0 times theorem prover too weak. 5829 trivial. 0 not checked. [2025-03-08 15:42:33,699 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:42:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 132 proven. 135 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:35,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703115212] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:42:35,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:42:35,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 7] total 16 [2025-03-08 15:42:35,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783408212] [2025-03-08 15:42:35,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:42:35,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 15:42:35,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:35,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 15:42:35,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2025-03-08 15:42:35,400 INFO L87 Difference]: Start difference. First operand 803 states and 1334 transitions. Second operand has 16 states, 16 states have (on average 24.125) internal successors, (386), 16 states have internal predecessors, (386), 7 states have call successors, (240), 4 states have call predecessors, (240), 7 states have return successors, (241), 7 states have call predecessors, (241), 7 states have call successors, (241) [2025-03-08 15:42:36,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:36,801 INFO L93 Difference]: Finished difference Result 1778 states and 2898 transitions. [2025-03-08 15:42:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 15:42:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 24.125) internal successors, (386), 16 states have internal predecessors, (386), 7 states have call successors, (240), 4 states have call predecessors, (240), 7 states have return successors, (241), 7 states have call predecessors, (241), 7 states have call successors, (241) Word has length 590 [2025-03-08 15:42:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:36,807 INFO L225 Difference]: With dead ends: 1778 [2025-03-08 15:42:36,807 INFO L226 Difference]: Without dead ends: 978 [2025-03-08 15:42:36,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1211 GetRequests, 1173 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=462, Invalid=1098, Unknown=0, NotChecked=0, Total=1560 [2025-03-08 15:42:36,810 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 607 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:36,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1158 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 15:42:36,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2025-03-08 15:42:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 896. [2025-03-08 15:42:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 755 states have (on average 1.5735099337748344) internal successors, (1188), 757 states have internal predecessors, (1188), 128 states have call successors, (128), 12 states have call predecessors, (128), 12 states have return successors, (128), 126 states have call predecessors, (128), 128 states have call successors, (128) [2025-03-08 15:42:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1444 transitions. [2025-03-08 15:42:36,851 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1444 transitions. Word has length 590 [2025-03-08 15:42:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:36,851 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1444 transitions. [2025-03-08 15:42:36,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 24.125) internal successors, (386), 16 states have internal predecessors, (386), 7 states have call successors, (240), 4 states have call predecessors, (240), 7 states have return successors, (241), 7 states have call predecessors, (241), 7 states have call successors, (241) [2025-03-08 15:42:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1444 transitions. [2025-03-08 15:42:36,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2025-03-08 15:42:36,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:36,860 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:36,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 15:42:37,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-03-08 15:42:37,065 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:37,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1226236741, now seen corresponding path program 1 times [2025-03-08 15:42:37,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:37,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89578019] [2025-03-08 15:42:37,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:37,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:37,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 590 statements into 1 equivalence classes. [2025-03-08 15:42:37,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 590 of 590 statements. [2025-03-08 15:42:37,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:37,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:38,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 87 proven. 180 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:38,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:38,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89578019] [2025-03-08 15:42:38,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89578019] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:42:38,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198325987] [2025-03-08 15:42:38,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:38,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:42:38,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:42:38,067 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 15:42:38,069 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 15:42:38,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 590 statements into 1 equivalence classes. [2025-03-08 15:42:38,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 590 of 590 statements. [2025-03-08 15:42:38,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:38,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:38,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 15:42:38,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:42:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7107 proven. 180 refuted. 0 times theorem prover too weak. 8733 trivial. 0 not checked. [2025-03-08 15:42:38,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:42:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 87 proven. 180 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:39,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198325987] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:42:39,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:42:39,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-08 15:42:39,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48588614] [2025-03-08 15:42:39,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:42:39,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:42:39,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:39,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:42:39,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:42:39,235 INFO L87 Difference]: Start difference. First operand 896 states and 1444 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2025-03-08 15:42:39,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:39,706 INFO L93 Difference]: Finished difference Result 1484 states and 2382 transitions. [2025-03-08 15:42:39,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 15:42:39,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) Word has length 590 [2025-03-08 15:42:39,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:39,711 INFO L225 Difference]: With dead ends: 1484 [2025-03-08 15:42:39,711 INFO L226 Difference]: Without dead ends: 591 [2025-03-08 15:42:39,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1187 GetRequests, 1177 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:42:39,713 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 476 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:39,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 875 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 15:42:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2025-03-08 15:42:39,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 581. [2025-03-08 15:42:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 469 states have (on average 1.5181236673773988) internal successors, (712), 470 states have internal predecessors, (712), 102 states have call successors, (102), 9 states have call predecessors, (102), 9 states have return successors, (102), 101 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-08 15:42:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 916 transitions. [2025-03-08 15:42:39,745 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 916 transitions. Word has length 590 [2025-03-08 15:42:39,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:39,745 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 916 transitions. [2025-03-08 15:42:39,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 2 states have call successors, (150), 2 states have call predecessors, (150), 4 states have return successors, (151), 2 states have call predecessors, (151), 2 states have call successors, (151) [2025-03-08 15:42:39,746 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 916 transitions. [2025-03-08 15:42:39,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2025-03-08 15:42:39,750 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:39,751 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:39,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 15:42:39,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:42:39,955 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:39,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash 853246680, now seen corresponding path program 1 times [2025-03-08 15:42:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:39,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214493045] [2025-03-08 15:42:39,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:39,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:39,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 591 statements into 1 equivalence classes. [2025-03-08 15:42:40,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 591 of 591 statements. [2025-03-08 15:42:40,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:40,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 75 proven. 192 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:41,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:41,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214493045] [2025-03-08 15:42:41,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214493045] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:42:41,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435279829] [2025-03-08 15:42:41,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:41,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:42:41,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:42:41,676 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 15:42:41,677 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 15:42:41,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 591 statements into 1 equivalence classes. [2025-03-08 15:42:42,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 591 of 591 statements. [2025-03-08 15:42:42,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:42,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:42,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 15:42:42,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:42:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7043 proven. 84 refuted. 0 times theorem prover too weak. 8893 trivial. 0 not checked. [2025-03-08 15:42:42,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:42:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 183 proven. 84 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:42,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435279829] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:42:42,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:42:42,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2025-03-08 15:42:42,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761596987] [2025-03-08 15:42:42,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:42:42,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 15:42:42,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:42,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 15:42:42,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:42:42,522 INFO L87 Difference]: Start difference. First operand 581 states and 916 transitions. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 3 states have call successors, (182), 2 states have call predecessors, (182), 4 states have return successors, (184), 3 states have call predecessors, (184), 3 states have call successors, (184) [2025-03-08 15:42:43,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:43,709 INFO L93 Difference]: Finished difference Result 1345 states and 2113 transitions. [2025-03-08 15:42:43,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 15:42:43,710 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 3 states have call successors, (182), 2 states have call predecessors, (182), 4 states have return successors, (184), 3 states have call predecessors, (184), 3 states have call successors, (184) Word has length 591 [2025-03-08 15:42:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:43,715 INFO L225 Difference]: With dead ends: 1345 [2025-03-08 15:42:43,715 INFO L226 Difference]: Without dead ends: 767 [2025-03-08 15:42:43,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1208 GetRequests, 1181 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2025-03-08 15:42:43,717 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 1607 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:43,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 1327 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 15:42:43,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2025-03-08 15:42:43,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 754. [2025-03-08 15:42:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 612 states have (on average 1.522875816993464) internal successors, (932), 614 states have internal predecessors, (932), 126 states have call successors, (126), 15 states have call predecessors, (126), 15 states have return successors, (126), 124 states have call predecessors, (126), 126 states have call successors, (126) [2025-03-08 15:42:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1184 transitions. [2025-03-08 15:42:43,749 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1184 transitions. Word has length 591 [2025-03-08 15:42:43,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:43,749 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1184 transitions. [2025-03-08 15:42:43,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 3 states have call successors, (182), 2 states have call predecessors, (182), 4 states have return successors, (184), 3 states have call predecessors, (184), 3 states have call successors, (184) [2025-03-08 15:42:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1184 transitions. [2025-03-08 15:42:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2025-03-08 15:42:43,753 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:43,753 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:43,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 15:42:43,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:42:43,957 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:43,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1493831609, now seen corresponding path program 1 times [2025-03-08 15:42:43,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:43,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720970973] [2025-03-08 15:42:43,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:43,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 591 statements into 1 equivalence classes. [2025-03-08 15:42:44,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 591 of 591 statements. [2025-03-08 15:42:44,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:44,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16020 trivial. 0 not checked. [2025-03-08 15:42:44,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:44,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720970973] [2025-03-08 15:42:44,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720970973] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:42:44,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:42:44,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 15:42:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210232659] [2025-03-08 15:42:44,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:42:44,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 15:42:44,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:44,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 15:42:44,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:42:44,904 INFO L87 Difference]: Start difference. First operand 754 states and 1184 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:45,165 INFO L93 Difference]: Finished difference Result 1505 states and 2365 transitions. [2025-03-08 15:42:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 15:42:45,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) Word has length 591 [2025-03-08 15:42:45,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:45,170 INFO L225 Difference]: With dead ends: 1505 [2025-03-08 15:42:45,170 INFO L226 Difference]: Without dead ends: 754 [2025-03-08 15:42:45,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 15:42:45,172 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 734 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:45,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 511 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:42:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2025-03-08 15:42:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 609. [2025-03-08 15:42:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 467 states have (on average 1.468950749464668) internal successors, (686), 469 states have internal predecessors, (686), 126 states have call successors, (126), 15 states have call predecessors, (126), 15 states have return successors, (126), 124 states have call predecessors, (126), 126 states have call successors, (126) [2025-03-08 15:42:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 938 transitions. [2025-03-08 15:42:45,206 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 938 transitions. Word has length 591 [2025-03-08 15:42:45,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:45,207 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 938 transitions. [2025-03-08 15:42:45,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 1 states have call predecessors, (90), 1 states have call successors, (90) [2025-03-08 15:42:45,208 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 938 transitions. [2025-03-08 15:42:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2025-03-08 15:42:45,210 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:45,210 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:45,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 15:42:45,211 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:45,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:45,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1033823773, now seen corresponding path program 1 times [2025-03-08 15:42:45,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:45,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988477758] [2025-03-08 15:42:45,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:45,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:45,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 592 statements into 1 equivalence classes. [2025-03-08 15:42:46,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 592 of 592 statements. [2025-03-08 15:42:46,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:46,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 96 proven. 171 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:47,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:47,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988477758] [2025-03-08 15:42:47,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988477758] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:42:47,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812121392] [2025-03-08 15:42:47,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:47,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:42:47,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:42:47,630 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 15:42:47,632 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 15:42:47,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 592 statements into 1 equivalence classes. [2025-03-08 15:42:47,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 592 of 592 statements. [2025-03-08 15:42:47,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:47,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:47,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-08 15:42:47,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:42:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 7449 proven. 171 refuted. 0 times theorem prover too weak. 8400 trivial. 0 not checked. [2025-03-08 15:42:48,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:42:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 96 proven. 171 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:49,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812121392] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:42:49,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:42:49,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 17 [2025-03-08 15:42:49,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102552282] [2025-03-08 15:42:49,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:42:49,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 15:42:49,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:49,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 15:42:49,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2025-03-08 15:42:49,493 INFO L87 Difference]: Start difference. First operand 609 states and 938 transitions. Second operand has 17 states, 17 states have (on average 16.41176470588235) internal successors, (279), 17 states have internal predecessors, (279), 5 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (238), 5 states have call predecessors, (238), 5 states have call successors, (238) [2025-03-08 15:42:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:50,705 INFO L93 Difference]: Finished difference Result 1921 states and 2930 transitions. [2025-03-08 15:42:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 15:42:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.41176470588235) internal successors, (279), 17 states have internal predecessors, (279), 5 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (238), 5 states have call predecessors, (238), 5 states have call successors, (238) Word has length 592 [2025-03-08 15:42:50,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:50,713 INFO L225 Difference]: With dead ends: 1921 [2025-03-08 15:42:50,714 INFO L226 Difference]: Without dead ends: 1315 [2025-03-08 15:42:50,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1174 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=639, Unknown=0, NotChecked=0, Total=870 [2025-03-08 15:42:50,717 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 1559 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:50,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 2496 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 15:42:50,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2025-03-08 15:42:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1213. [2025-03-08 15:42:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 928 states have (on average 1.4385775862068966) internal successors, (1335), 932 states have internal predecessors, (1335), 252 states have call successors, (252), 32 states have call predecessors, (252), 32 states have return successors, (252), 248 states have call predecessors, (252), 252 states have call successors, (252) [2025-03-08 15:42:50,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1839 transitions. [2025-03-08 15:42:50,792 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1839 transitions. Word has length 592 [2025-03-08 15:42:50,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:50,793 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1839 transitions. [2025-03-08 15:42:50,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.41176470588235) internal successors, (279), 17 states have internal predecessors, (279), 5 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (238), 5 states have call predecessors, (238), 5 states have call successors, (238) [2025-03-08 15:42:50,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1839 transitions. [2025-03-08 15:42:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2025-03-08 15:42:50,798 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:50,798 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:50,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 15:42:50,998 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,SelfDestructingSolverStorable10 [2025-03-08 15:42:50,999 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:50,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash 15448159, now seen corresponding path program 1 times [2025-03-08 15:42:51,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:51,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397533759] [2025-03-08 15:42:51,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:51,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 593 statements into 1 equivalence classes. [2025-03-08 15:42:51,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 593 of 593 statements. [2025-03-08 15:42:51,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:51,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 114 proven. 153 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:52,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397533759] [2025-03-08 15:42:52,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397533759] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:42:52,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964573043] [2025-03-08 15:42:52,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:52,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:42:52,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:42:52,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:42:52,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 15:42:52,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 593 statements into 1 equivalence classes. [2025-03-08 15:42:52,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 593 of 593 statements. [2025-03-08 15:42:52,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:52,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:52,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 15:42:52,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:42:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 8009 proven. 147 refuted. 0 times theorem prover too weak. 7864 trivial. 0 not checked. [2025-03-08 15:42:53,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:42:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 120 proven. 147 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:53,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964573043] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:42:53,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:42:53,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 18 [2025-03-08 15:42:53,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108666562] [2025-03-08 15:42:53,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:42:53,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 15:42:53,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:42:53,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 15:42:53,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-03-08 15:42:53,632 INFO L87 Difference]: Start difference. First operand 1213 states and 1839 transitions. Second operand has 18 states, 18 states have (on average 19.22222222222222) internal successors, (346), 18 states have internal predecessors, (346), 6 states have call successors, (270), 3 states have call predecessors, (270), 6 states have return successors, (270), 6 states have call predecessors, (270), 6 states have call successors, (270) [2025-03-08 15:42:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:42:55,810 INFO L93 Difference]: Finished difference Result 3902 states and 5872 transitions. [2025-03-08 15:42:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-08 15:42:55,811 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 19.22222222222222) internal successors, (346), 18 states have internal predecessors, (346), 6 states have call successors, (270), 3 states have call predecessors, (270), 6 states have return successors, (270), 6 states have call predecessors, (270), 6 states have call successors, (270) Word has length 593 [2025-03-08 15:42:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:42:55,820 INFO L225 Difference]: With dead ends: 3902 [2025-03-08 15:42:55,821 INFO L226 Difference]: Without dead ends: 2692 [2025-03-08 15:42:55,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 1179 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=447, Invalid=1445, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 15:42:55,823 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 1611 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 3427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-08 15:42:55,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 2763 Invalid, 3427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-08 15:42:55,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2025-03-08 15:42:55,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 1956. [2025-03-08 15:42:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1441 states have (on average 1.3962526023594726) internal successors, (2012), 1447 states have internal predecessors, (2012), 442 states have call successors, (442), 72 states have call predecessors, (442), 72 states have return successors, (442), 436 states have call predecessors, (442), 442 states have call successors, (442) [2025-03-08 15:42:55,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2896 transitions. [2025-03-08 15:42:55,979 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2896 transitions. Word has length 593 [2025-03-08 15:42:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:42:55,980 INFO L471 AbstractCegarLoop]: Abstraction has 1956 states and 2896 transitions. [2025-03-08 15:42:55,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 19.22222222222222) internal successors, (346), 18 states have internal predecessors, (346), 6 states have call successors, (270), 3 states have call predecessors, (270), 6 states have return successors, (270), 6 states have call predecessors, (270), 6 states have call successors, (270) [2025-03-08 15:42:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2896 transitions. [2025-03-08 15:42:55,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2025-03-08 15:42:55,983 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:42:55,984 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:55,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 15:42:56,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:42:56,185 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:42:56,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:42:56,186 INFO L85 PathProgramCache]: Analyzing trace with hash -902272897, now seen corresponding path program 1 times [2025-03-08 15:42:56,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:42:56,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409464485] [2025-03-08 15:42:56,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:56,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:42:56,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 593 statements into 1 equivalence classes. [2025-03-08 15:42:56,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 593 of 593 statements. [2025-03-08 15:42:56,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:56,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 48 proven. 219 refuted. 0 times theorem prover too weak. 15753 trivial. 0 not checked. [2025-03-08 15:42:57,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:42:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409464485] [2025-03-08 15:42:57,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409464485] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:42:57,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216521719] [2025-03-08 15:42:57,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:42:57,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:42:57,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:42:57,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:42:57,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 15:42:58,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 593 statements into 1 equivalence classes. [2025-03-08 15:42:58,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 593 of 593 statements. [2025-03-08 15:42:58,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:42:58,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:42:58,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-08 15:42:58,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:43:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 9692 proven. 357 refuted. 0 times theorem prover too weak. 5971 trivial. 0 not checked. [2025-03-08 15:43:00,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:43:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 426 proven. 366 refuted. 0 times theorem prover too weak. 15228 trivial. 0 not checked. [2025-03-08 15:43:02,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216521719] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:43:02,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:43:02,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 16] total 35 [2025-03-08 15:43:02,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266616472] [2025-03-08 15:43:02,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:43:02,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-08 15:43:02,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:43:02,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-08 15:43:02,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=941, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 15:43:02,544 INFO L87 Difference]: Start difference. First operand 1956 states and 2896 transitions. Second operand has 35 states, 33 states have (on average 11.333333333333334) internal successors, (374), 33 states have internal predecessors, (374), 10 states have call successors, (270), 5 states have call predecessors, (270), 11 states have return successors, (270), 9 states have call predecessors, (270), 10 states have call successors, (270) [2025-03-08 15:43:07,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:43:07,627 INFO L93 Difference]: Finished difference Result 5873 states and 8647 transitions. [2025-03-08 15:43:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-03-08 15:43:07,628 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 11.333333333333334) internal successors, (374), 33 states have internal predecessors, (374), 10 states have call successors, (270), 5 states have call predecessors, (270), 11 states have return successors, (270), 9 states have call predecessors, (270), 10 states have call successors, (270) Word has length 593 [2025-03-08 15:43:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:43:07,649 INFO L225 Difference]: With dead ends: 5873 [2025-03-08 15:43:07,649 INFO L226 Difference]: Without dead ends: 4132 [2025-03-08 15:43:07,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1237 GetRequests, 1172 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=952, Invalid=3338, Unknown=0, NotChecked=0, Total=4290 [2025-03-08 15:43:07,655 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 2011 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 5805 mSolverCounterSat, 1068 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 5114 SdHoareTripleChecker+Invalid, 6873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1068 IncrementalHoareTripleChecker+Valid, 5805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-08 15:43:07,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 5114 Invalid, 6873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1068 Valid, 5805 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-08 15:43:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4132 states. [2025-03-08 15:43:08,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4132 to 3034. [2025-03-08 15:43:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 2159 states have (on average 1.3529411764705883) internal successors, (2921), 2173 states have internal predecessors, (2921), 742 states have call successors, (742), 132 states have call predecessors, (742), 132 states have return successors, (742), 728 states have call predecessors, (742), 742 states have call successors, (742) [2025-03-08 15:43:08,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4405 transitions. [2025-03-08 15:43:08,087 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4405 transitions. Word has length 593 [2025-03-08 15:43:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:43:08,088 INFO L471 AbstractCegarLoop]: Abstraction has 3034 states and 4405 transitions. [2025-03-08 15:43:08,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 11.333333333333334) internal successors, (374), 33 states have internal predecessors, (374), 10 states have call successors, (270), 5 states have call predecessors, (270), 11 states have return successors, (270), 9 states have call predecessors, (270), 10 states have call successors, (270) [2025-03-08 15:43:08,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4405 transitions. [2025-03-08 15:43:08,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2025-03-08 15:43:08,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:43:08,098 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:08,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 15:43:08,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:43:08,299 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:43:08,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:43:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1907638848, now seen corresponding path program 1 times [2025-03-08 15:43:08,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:43:08,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879653670] [2025-03-08 15:43:08,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:43:08,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:43:08,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 593 statements into 1 equivalence classes. [2025-03-08 15:43:10,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 593 of 593 statements. [2025-03-08 15:43:10,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:43:10,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:43:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 342 proven. 933 refuted. 0 times theorem prover too weak. 14745 trivial. 0 not checked. [2025-03-08 15:43:11,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:43:11,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879653670] [2025-03-08 15:43:11,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879653670] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:43:11,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270275146] [2025-03-08 15:43:11,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:43:11,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:43:11,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:43:11,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:43:11,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 15:43:12,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 593 statements into 1 equivalence classes. [2025-03-08 15:43:12,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 593 of 593 statements. [2025-03-08 15:43:12,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:43:12,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:43:12,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-08 15:43:12,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:43:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 9490 proven. 990 refuted. 0 times theorem prover too weak. 5540 trivial. 0 not checked. [2025-03-08 15:43:15,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:43:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16020 backedges. 522 proven. 1035 refuted. 0 times theorem prover too weak. 14463 trivial. 0 not checked. [2025-03-08 15:43:18,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270275146] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 15:43:18,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 15:43:18,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 29, 29] total 68 [2025-03-08 15:43:18,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385066901] [2025-03-08 15:43:18,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 15:43:18,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2025-03-08 15:43:18,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:43:18,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2025-03-08 15:43:18,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=3815, Unknown=0, NotChecked=0, Total=4556 [2025-03-08 15:43:18,361 INFO L87 Difference]: Start difference. First operand 3034 states and 4405 transitions. Second operand has 68 states, 66 states have (on average 6.242424242424242) internal successors, (412), 65 states have internal predecessors, (412), 18 states have call successors, (248), 7 states have call predecessors, (248), 17 states have return successors, (249), 18 states have call predecessors, (249), 18 states have call successors, (249) [2025-03-08 15:43:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:43:30,051 INFO L93 Difference]: Finished difference Result 12341 states and 17669 transitions. [2025-03-08 15:43:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2025-03-08 15:43:30,052 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 66 states have (on average 6.242424242424242) internal successors, (412), 65 states have internal predecessors, (412), 18 states have call successors, (248), 7 states have call predecessors, (248), 17 states have return successors, (249), 18 states have call predecessors, (249), 18 states have call successors, (249) Word has length 593 [2025-03-08 15:43:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:43:30,090 INFO L225 Difference]: With dead ends: 12341 [2025-03-08 15:43:30,090 INFO L226 Difference]: Without dead ends: 9731 [2025-03-08 15:43:30,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1352 GetRequests, 1165 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10091 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=7249, Invalid=28283, Unknown=0, NotChecked=0, Total=35532 [2025-03-08 15:43:30,105 INFO L435 NwaCegarLoop]: 548 mSDtfsCounter, 9445 mSDsluCounter, 7031 mSDsCounter, 0 mSdLazyCounter, 10336 mSolverCounterSat, 2330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9465 SdHoareTripleChecker+Valid, 7579 SdHoareTripleChecker+Invalid, 12666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2330 IncrementalHoareTripleChecker+Valid, 10336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:43:30,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9465 Valid, 7579 Invalid, 12666 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2330 Valid, 10336 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2025-03-08 15:43:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9731 states. [2025-03-08 15:43:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9731 to 4479. [2025-03-08 15:43:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4479 states, 3562 states have (on average 1.424480628860191) internal successors, (5074), 3576 states have internal predecessors, (5074), 702 states have call successors, (702), 214 states have call predecessors, (702), 214 states have return successors, (702), 688 states have call predecessors, (702), 702 states have call successors, (702) [2025-03-08 15:43:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6478 transitions. [2025-03-08 15:43:30,871 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6478 transitions. Word has length 593 [2025-03-08 15:43:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:43:30,872 INFO L471 AbstractCegarLoop]: Abstraction has 4479 states and 6478 transitions. [2025-03-08 15:43:30,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 66 states have (on average 6.242424242424242) internal successors, (412), 65 states have internal predecessors, (412), 18 states have call successors, (248), 7 states have call predecessors, (248), 17 states have return successors, (249), 18 states have call predecessors, (249), 18 states have call successors, (249) [2025-03-08 15:43:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6478 transitions. [2025-03-08 15:43:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2025-03-08 15:43:30,876 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:43:30,876 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:30,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 15:43:31,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 15:43:31,077 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:43:31,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:43:31,078 INFO L85 PathProgramCache]: Analyzing trace with hash -437597507, now seen corresponding path program 1 times [2025-03-08 15:43:31,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:43:31,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431081962] [2025-03-08 15:43:31,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:43:31,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:43:31,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 593 statements into 1 equivalence classes.