./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-86.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_codestructure_dependencies_file-86.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 d32ec5a50162e1277d5b8e9598dff8d55e883556c57a5fb919336a65433989f7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 09:54:39,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 09:54:39,570 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 09:54:39,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 09:54:39,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 09:54:39,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 09:54:39,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 09:54:39,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 09:54:39,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 09:54:39,601 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 09:54:39,602 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 09:54:39,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 09:54:39,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 09:54:39,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 09:54:39,602 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 09:54:39,602 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 09:54:39,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 09:54:39,603 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 09:54:39,603 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 09:54:39,604 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 09:54:39,604 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 09:54:39,604 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 09:54:39,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 09:54:39,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 09:54:39,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 09:54:39,604 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 09:54:39,605 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 09:54:39,605 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 09:54:39,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 09:54:39,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 09:54:39,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 09:54:39,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 09:54:39,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 09:54:39,605 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 -> d32ec5a50162e1277d5b8e9598dff8d55e883556c57a5fb919336a65433989f7 [2025-03-08 09:54:39,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 09:54:39,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 09:54:39,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 09:54:39,849 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 09:54:39,849 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 09:54:39,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-86.i [2025-03-08 09:54:40,967 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abc46df3/af88483bae6c44bb8fa0f1c956947749/FLAGcc09ec5fd [2025-03-08 09:54:41,187 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 09:54:41,188 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_dependencies_file-86.i [2025-03-08 09:54:41,194 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abc46df3/af88483bae6c44bb8fa0f1c956947749/FLAGcc09ec5fd [2025-03-08 09:54:41,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7abc46df3/af88483bae6c44bb8fa0f1c956947749 [2025-03-08 09:54:41,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 09:54:41,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 09:54:41,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 09:54:41,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 09:54:41,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 09:54:41,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e500d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41, skipping insertion in model container [2025-03-08 09:54:41,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 09:54:41,671 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_codestructure_dependencies_file-86.i[919,932] [2025-03-08 09:54:41,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 09:54:41,735 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 09:54:41,746 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_codestructure_dependencies_file-86.i[919,932] [2025-03-08 09:54:41,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 09:54:41,791 INFO L204 MainTranslator]: Completed translation [2025-03-08 09:54:41,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41 WrapperNode [2025-03-08 09:54:41,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 09:54:41,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 09:54:41,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 09:54:41,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 09:54:41,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,829 INFO L138 Inliner]: procedures = 26, calls = 28, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2025-03-08 09:54:41,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 09:54:41,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 09:54:41,830 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 09:54:41,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 09:54:41,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,860 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 09:54:41,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,871 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 09:54:41,876 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 09:54:41,876 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 09:54:41,876 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 09:54:41,879 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (1/1) ... [2025-03-08 09:54:41,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 09:54:41,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 09:54:41,906 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 09:54:41,909 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 09:54:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 09:54:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 09:54:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 09:54:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 09:54:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 09:54:41,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 09:54:41,983 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 09:54:41,984 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 09:54:42,207 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-08 09:54:42,207 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 09:54:42,217 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 09:54:42,217 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 09:54:42,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:54:42 BoogieIcfgContainer [2025-03-08 09:54:42,217 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 09:54:42,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 09:54:42,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 09:54:42,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 09:54:42,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:54:41" (1/3) ... [2025-03-08 09:54:42,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f16178d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:54:42, skipping insertion in model container [2025-03-08 09:54:42,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:54:41" (2/3) ... [2025-03-08 09:54:42,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f16178d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:54:42, skipping insertion in model container [2025-03-08 09:54:42,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:54:42" (3/3) ... [2025-03-08 09:54:42,227 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-86.i [2025-03-08 09:54:42,240 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 09:54:42,241 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_codestructure_dependencies_file-86.i that has 2 procedures, 51 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 09:54:42,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 09:54:42,291 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;@6e81bc69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 09:54:42,291 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 09:54:42,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 34 states have internal predecessors, (47), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 09:54:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 09:54:42,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:54:42,301 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:42,301 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:54:42,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:54:42,305 INFO L85 PathProgramCache]: Analyzing trace with hash 609796668, now seen corresponding path program 1 times [2025-03-08 09:54:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:54:42,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160945874] [2025-03-08 09:54:42,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:54:42,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:54:42,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 09:54:42,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 09:54:42,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:54:42,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:54:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2025-03-08 09:54:42,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:54:42,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160945874] [2025-03-08 09:54:42,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160945874] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 09:54:42,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118736472] [2025-03-08 09:54:42,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:54:42,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 09:54:42,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 09:54:42,542 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 09:54:42,544 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 09:54:42,596 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 09:54:42,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 09:54:42,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:54:42,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:54:42,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 09:54:42,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 09:54:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2025-03-08 09:54:42,682 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 09:54:42,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118736472] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:54:42,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 09:54:42,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 09:54:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780133229] [2025-03-08 09:54:42,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:54:42,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 09:54:42,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:54:42,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 09:54:42,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 09:54:42,701 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 34 states have internal predecessors, (47), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 09:54:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:54:42,715 INFO L93 Difference]: Finished difference Result 96 states and 164 transitions. [2025-03-08 09:54:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 09:54:42,716 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 98 [2025-03-08 09:54:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:54:42,720 INFO L225 Difference]: With dead ends: 96 [2025-03-08 09:54:42,720 INFO L226 Difference]: Without dead ends: 48 [2025-03-08 09:54:42,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 99 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 09:54:42,724 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 09:54:42,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 09:54:42,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-03-08 09:54:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-03-08 09:54:42,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 09:54:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 71 transitions. [2025-03-08 09:54:42,754 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 71 transitions. Word has length 98 [2025-03-08 09:54:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:54:42,754 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 71 transitions. [2025-03-08 09:54:42,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 09:54:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 71 transitions. [2025-03-08 09:54:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 09:54:42,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:54:42,757 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:42,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 09:54:42,958 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 09:54:42,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:54:42,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:54:42,959 INFO L85 PathProgramCache]: Analyzing trace with hash 352217595, now seen corresponding path program 1 times [2025-03-08 09:54:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:54:42,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935753499] [2025-03-08 09:54:42,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:54:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:54:42,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 09:54:43,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 09:54:43,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:54:43,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:54:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:54:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:54:43,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935753499] [2025-03-08 09:54:43,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935753499] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:54:43,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:54:43,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 09:54:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162471044] [2025-03-08 09:54:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:54:43,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 09:54:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:54:43,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 09:54:43,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 09:54:43,278 INFO L87 Difference]: Start difference. First operand 48 states and 71 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:54:43,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:54:43,425 INFO L93 Difference]: Finished difference Result 139 states and 208 transitions. [2025-03-08 09:54:43,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 09:54:43,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 98 [2025-03-08 09:54:43,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:54:43,428 INFO L225 Difference]: With dead ends: 139 [2025-03-08 09:54:43,428 INFO L226 Difference]: Without dead ends: 94 [2025-03-08 09:54:43,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-08 09:54:43,429 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 86 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 09:54:43,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 191 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 09:54:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-03-08 09:54:43,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2025-03-08 09:54:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 47 states have internal predecessors, (60), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-08 09:54:43,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 120 transitions. [2025-03-08 09:54:43,450 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 120 transitions. Word has length 98 [2025-03-08 09:54:43,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:54:43,451 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 120 transitions. [2025-03-08 09:54:43,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:54:43,451 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 120 transitions. [2025-03-08 09:54:43,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 09:54:43,452 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:54:43,452 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:43,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 09:54:43,453 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:54:43,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:54:43,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1455236868, now seen corresponding path program 1 times [2025-03-08 09:54:43,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:54:43,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109838212] [2025-03-08 09:54:43,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:54:43,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:54:43,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 09:54:43,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 09:54:43,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:54:43,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:54:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:54:50,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:54:50,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109838212] [2025-03-08 09:54:50,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109838212] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:54:50,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:54:50,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 09:54:50,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435595662] [2025-03-08 09:54:50,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:54:50,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 09:54:50,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:54:50,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 09:54:50,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-03-08 09:54:50,009 INFO L87 Difference]: Start difference. First operand 80 states and 120 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:54:51,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:54:51,310 INFO L93 Difference]: Finished difference Result 185 states and 268 transitions. [2025-03-08 09:54:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 09:54:51,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 98 [2025-03-08 09:54:51,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:54:51,313 INFO L225 Difference]: With dead ends: 185 [2025-03-08 09:54:51,313 INFO L226 Difference]: Without dead ends: 140 [2025-03-08 09:54:51,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2025-03-08 09:54:51,316 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 99 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 09:54:51,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 241 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 09:54:51,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-03-08 09:54:51,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 97. [2025-03-08 09:54:51,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 30 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-08 09:54:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 144 transitions. [2025-03-08 09:54:51,332 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 144 transitions. Word has length 98 [2025-03-08 09:54:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:54:51,333 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 144 transitions. [2025-03-08 09:54:51,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:54:51,334 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 144 transitions. [2025-03-08 09:54:51,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 09:54:51,336 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:54:51,336 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:51,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 09:54:51,336 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:54:51,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:54:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1651750373, now seen corresponding path program 1 times [2025-03-08 09:54:51,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:54:51,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21774746] [2025-03-08 09:54:51,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:54:51,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:54:51,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 09:54:51,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 09:54:51,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:54:51,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:54:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:54:51,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:54:51,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21774746] [2025-03-08 09:54:51,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21774746] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:54:51,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:54:51,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 09:54:51,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046360053] [2025-03-08 09:54:51,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:54:51,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 09:54:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:54:51,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 09:54:51,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 09:54:51,393 INFO L87 Difference]: Start difference. First operand 97 states and 144 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:54:51,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:54:51,419 INFO L93 Difference]: Finished difference Result 204 states and 303 transitions. [2025-03-08 09:54:51,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 09:54:51,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 98 [2025-03-08 09:54:51,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:54:51,421 INFO L225 Difference]: With dead ends: 204 [2025-03-08 09:54:51,421 INFO L226 Difference]: Without dead ends: 143 [2025-03-08 09:54:51,422 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 09:54:51,422 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 62 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 09:54:51,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 140 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 09:54:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-03-08 09:54:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2025-03-08 09:54:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 92 states have (on average 1.2826086956521738) internal successors, (118), 92 states have internal predecessors, (118), 45 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2025-03-08 09:54:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2025-03-08 09:54:51,434 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 98 [2025-03-08 09:54:51,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:54:51,435 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2025-03-08 09:54:51,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:54:51,435 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2025-03-08 09:54:51,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-08 09:54:51,436 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:54:51,436 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:51,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 09:54:51,436 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:54:51,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:54:51,436 INFO L85 PathProgramCache]: Analyzing trace with hash -340940569, now seen corresponding path program 1 times [2025-03-08 09:54:51,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:54:51,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468987829] [2025-03-08 09:54:51,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:54:51,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:54:51,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-08 09:54:51,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 09:54:51,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:54:51,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:54:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:54:51,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:54:51,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468987829] [2025-03-08 09:54:51,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468987829] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:54:51,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:54:51,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 09:54:51,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845917235] [2025-03-08 09:54:51,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:54:51,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 09:54:51,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:54:51,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 09:54:51,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 09:54:51,545 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:54:51,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:54:51,615 INFO L93 Difference]: Finished difference Result 311 states and 453 transitions. [2025-03-08 09:54:51,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 09:54:51,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 99 [2025-03-08 09:54:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:54:51,619 INFO L225 Difference]: With dead ends: 311 [2025-03-08 09:54:51,619 INFO L226 Difference]: Without dead ends: 206 [2025-03-08 09:54:51,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 09:54:51,621 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 63 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 09:54:51,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 210 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 09:54:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-03-08 09:54:51,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 183. [2025-03-08 09:54:51,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 118 states have (on average 1.2627118644067796) internal successors, (149), 118 states have internal predecessors, (149), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-08 09:54:51,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 269 transitions. [2025-03-08 09:54:51,640 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 269 transitions. Word has length 99 [2025-03-08 09:54:51,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:54:51,641 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 269 transitions. [2025-03-08 09:54:51,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:54:51,641 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 269 transitions. [2025-03-08 09:54:51,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-08 09:54:51,642 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:54:51,642 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:51,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 09:54:51,642 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:54:51,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:54:51,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2074873912, now seen corresponding path program 1 times [2025-03-08 09:54:51,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:54:51,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368553394] [2025-03-08 09:54:51,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:54:51,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:54:51,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-08 09:54:51,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 09:54:51,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:54:51,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:54:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:54:54,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:54:54,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368553394] [2025-03-08 09:54:54,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368553394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:54:54,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:54:54,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 09:54:54,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704987051] [2025-03-08 09:54:54,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:54:54,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 09:54:54,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:54:54,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 09:54:54,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-03-08 09:54:54,368 INFO L87 Difference]: Start difference. First operand 183 states and 269 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:54:55,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:54:55,402 INFO L93 Difference]: Finished difference Result 239 states and 335 transitions. [2025-03-08 09:54:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 09:54:55,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 99 [2025-03-08 09:54:55,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:54:55,409 INFO L225 Difference]: With dead ends: 239 [2025-03-08 09:54:55,409 INFO L226 Difference]: Without dead ends: 237 [2025-03-08 09:54:55,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2025-03-08 09:54:55,410 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 94 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 09:54:55,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 245 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 09:54:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2025-03-08 09:54:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 184. [2025-03-08 09:54:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 119 states have (on average 1.2605042016806722) internal successors, (150), 119 states have internal predecessors, (150), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-08 09:54:55,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 270 transitions. [2025-03-08 09:54:55,439 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 270 transitions. Word has length 99 [2025-03-08 09:54:55,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:54:55,439 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 270 transitions. [2025-03-08 09:54:55,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:54:55,443 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 270 transitions. [2025-03-08 09:54:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-08 09:54:55,445 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:54:55,446 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:54:55,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 09:54:55,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:54:55,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:54:55,446 INFO L85 PathProgramCache]: Analyzing trace with hash 672601063, now seen corresponding path program 1 times [2025-03-08 09:54:55,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:54:55,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152708496] [2025-03-08 09:54:55,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:54:55,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:54:55,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-08 09:54:55,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 09:54:55,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:54:55,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:55:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:55:01,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:55:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152708496] [2025-03-08 09:55:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152708496] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:55:01,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:55:01,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 09:55:01,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236020074] [2025-03-08 09:55:01,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:55:01,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 09:55:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:55:01,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 09:55:01,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 09:55:01,648 INFO L87 Difference]: Start difference. First operand 184 states and 270 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:55:03,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:55:03,443 INFO L93 Difference]: Finished difference Result 239 states and 335 transitions. [2025-03-08 09:55:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 09:55:03,444 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 99 [2025-03-08 09:55:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:55:03,445 INFO L225 Difference]: With dead ends: 239 [2025-03-08 09:55:03,445 INFO L226 Difference]: Without dead ends: 237 [2025-03-08 09:55:03,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2025-03-08 09:55:03,446 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 68 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-08 09:55:03,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 310 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-08 09:55:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2025-03-08 09:55:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 186. [2025-03-08 09:55:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 121 states have (on average 1.2644628099173554) internal successors, (153), 121 states have internal predecessors, (153), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-08 09:55:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 273 transitions. [2025-03-08 09:55:03,464 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 273 transitions. Word has length 99 [2025-03-08 09:55:03,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:55:03,464 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 273 transitions. [2025-03-08 09:55:03,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:55:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 273 transitions. [2025-03-08 09:55:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-08 09:55:03,465 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:55:03,465 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:55:03,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 09:55:03,465 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:55:03,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:55:03,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1038807415, now seen corresponding path program 1 times [2025-03-08 09:55:03,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:55:03,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156386062] [2025-03-08 09:55:03,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:55:03,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:55:03,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-08 09:55:03,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 09:55:03,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:55:03,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:55:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:55:10,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:55:10,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156386062] [2025-03-08 09:55:10,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156386062] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:55:10,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:55:10,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 09:55:10,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675806381] [2025-03-08 09:55:10,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:55:10,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 09:55:10,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:55:10,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 09:55:10,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-03-08 09:55:10,790 INFO L87 Difference]: Start difference. First operand 186 states and 273 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:55:14,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:55:14,107 INFO L93 Difference]: Finished difference Result 276 states and 383 transitions. [2025-03-08 09:55:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 09:55:14,110 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 99 [2025-03-08 09:55:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:55:14,111 INFO L225 Difference]: With dead ends: 276 [2025-03-08 09:55:14,111 INFO L226 Difference]: Without dead ends: 274 [2025-03-08 09:55:14,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2025-03-08 09:55:14,112 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 93 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-08 09:55:14,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 301 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-08 09:55:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2025-03-08 09:55:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 205. [2025-03-08 09:55:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 140 states have (on average 1.2857142857142858) internal successors, (180), 140 states have internal predecessors, (180), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-08 09:55:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 300 transitions. [2025-03-08 09:55:14,129 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 300 transitions. Word has length 99 [2025-03-08 09:55:14,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:55:14,129 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 300 transitions. [2025-03-08 09:55:14,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:55:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 300 transitions. [2025-03-08 09:55:14,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-08 09:55:14,130 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:55:14,130 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:55:14,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 09:55:14,130 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:55:14,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:55:14,130 INFO L85 PathProgramCache]: Analyzing trace with hash -726277795, now seen corresponding path program 1 times [2025-03-08 09:55:14,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:55:14,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245218517] [2025-03-08 09:55:14,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:55:14,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:55:14,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-08 09:55:14,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-08 09:55:14,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:55:14,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:55:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:55:20,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:55:20,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245218517] [2025-03-08 09:55:20,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245218517] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:55:20,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:55:20,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 09:55:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081462089] [2025-03-08 09:55:20,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:55:20,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 09:55:20,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:55:20,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 09:55:20,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2025-03-08 09:55:20,616 INFO L87 Difference]: Start difference. First operand 205 states and 300 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:55:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:55:24,554 INFO L93 Difference]: Finished difference Result 289 states and 405 transitions. [2025-03-08 09:55:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 09:55:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 100 [2025-03-08 09:55:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:55:24,557 INFO L225 Difference]: With dead ends: 289 [2025-03-08 09:55:24,557 INFO L226 Difference]: Without dead ends: 287 [2025-03-08 09:55:24,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-08 09:55:24,557 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 100 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-08 09:55:24,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 337 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-08 09:55:24,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2025-03-08 09:55:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 204. [2025-03-08 09:55:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 139 states have (on average 1.2877697841726619) internal successors, (179), 139 states have internal predecessors, (179), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-08 09:55:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 299 transitions. [2025-03-08 09:55:24,573 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 299 transitions. Word has length 100 [2025-03-08 09:55:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:55:24,574 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 299 transitions. [2025-03-08 09:55:24,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:55:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 299 transitions. [2025-03-08 09:55:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-08 09:55:24,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:55:24,575 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:55:24,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 09:55:24,575 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:55:24,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:55:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash -536407491, now seen corresponding path program 1 times [2025-03-08 09:55:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:55:24,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144456991] [2025-03-08 09:55:24,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:55:24,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:55:24,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-08 09:55:24,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-08 09:55:24,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:55:24,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:55:30,680 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:55:30,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:55:30,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144456991] [2025-03-08 09:55:30,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144456991] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:55:30,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:55:30,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 09:55:30,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828277404] [2025-03-08 09:55:30,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:55:30,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 09:55:30,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:55:30,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 09:55:30,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-08 09:55:30,682 INFO L87 Difference]: Start difference. First operand 204 states and 299 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:55:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:55:32,875 INFO L93 Difference]: Finished difference Result 271 states and 381 transitions. [2025-03-08 09:55:32,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 09:55:32,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 100 [2025-03-08 09:55:32,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:55:32,877 INFO L225 Difference]: With dead ends: 271 [2025-03-08 09:55:32,877 INFO L226 Difference]: Without dead ends: 269 [2025-03-08 09:55:32,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=104, Invalid=168, Unknown=0, NotChecked=0, Total=272 [2025-03-08 09:55:32,878 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 67 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 09:55:32,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 247 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 09:55:32,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2025-03-08 09:55:32,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 203. [2025-03-08 09:55:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 138 states have (on average 1.2826086956521738) internal successors, (177), 138 states have internal predecessors, (177), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-08 09:55:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 297 transitions. [2025-03-08 09:55:32,888 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 297 transitions. Word has length 100 [2025-03-08 09:55:32,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:55:32,888 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 297 transitions. [2025-03-08 09:55:32,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:55:32,889 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 297 transitions. [2025-03-08 09:55:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-08 09:55:32,889 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:55:32,889 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:55:32,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 09:55:32,890 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:55:32,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:55:32,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2049539236, now seen corresponding path program 1 times [2025-03-08 09:55:32,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:55:32,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040271791] [2025-03-08 09:55:32,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:55:32,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:55:32,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-08 09:55:32,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-08 09:55:32,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:55:32,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:55:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:55:42,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:55:42,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040271791] [2025-03-08 09:55:42,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040271791] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:55:42,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:55:42,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 09:55:42,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876031651] [2025-03-08 09:55:42,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:55:42,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 09:55:42,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:55:42,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 09:55:42,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2025-03-08 09:55:42,085 INFO L87 Difference]: Start difference. First operand 203 states and 297 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:55:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:55:50,691 INFO L93 Difference]: Finished difference Result 291 states and 404 transitions. [2025-03-08 09:55:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 09:55:50,691 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 100 [2025-03-08 09:55:50,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:55:50,693 INFO L225 Difference]: With dead ends: 291 [2025-03-08 09:55:50,693 INFO L226 Difference]: Without dead ends: 289 [2025-03-08 09:55:50,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=104, Invalid=168, Unknown=0, NotChecked=0, Total=272 [2025-03-08 09:55:50,693 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 82 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-08 09:55:50,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 286 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-08 09:55:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2025-03-08 09:55:50,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 218. [2025-03-08 09:55:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 153 states have (on average 1.3071895424836601) internal successors, (200), 153 states have internal predecessors, (200), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-08 09:55:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 320 transitions. [2025-03-08 09:55:50,709 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 320 transitions. Word has length 100 [2025-03-08 09:55:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:55:50,709 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 320 transitions. [2025-03-08 09:55:50,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:55:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 320 transitions. [2025-03-08 09:55:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-08 09:55:50,711 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:55:50,712 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:55:50,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 09:55:50,712 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:55:50,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:55:50,712 INFO L85 PathProgramCache]: Analyzing trace with hash 697012218, now seen corresponding path program 1 times [2025-03-08 09:55:50,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:55:50,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901217582] [2025-03-08 09:55:50,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:55:50,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:55:50,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-08 09:55:50,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-08 09:55:50,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:55:50,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:55:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:55:58,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:55:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901217582] [2025-03-08 09:55:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901217582] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:55:58,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:55:58,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-08 09:55:58,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506427432] [2025-03-08 09:55:58,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:55:58,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 09:55:58,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:55:58,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 09:55:58,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2025-03-08 09:55:58,936 INFO L87 Difference]: Start difference. First operand 218 states and 320 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:56:05,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 09:56:05,681 INFO L93 Difference]: Finished difference Result 301 states and 414 transitions. [2025-03-08 09:56:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 09:56:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 100 [2025-03-08 09:56:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 09:56:05,684 INFO L225 Difference]: With dead ends: 301 [2025-03-08 09:56:05,684 INFO L226 Difference]: Without dead ends: 299 [2025-03-08 09:56:05,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=115, Invalid=191, Unknown=0, NotChecked=0, Total=306 [2025-03-08 09:56:05,685 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 96 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 09:56:05,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 332 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 09:56:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2025-03-08 09:56:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 220. [2025-03-08 09:56:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 155 states have (on average 1.303225806451613) internal successors, (202), 155 states have internal predecessors, (202), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-08 09:56:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 322 transitions. [2025-03-08 09:56:05,699 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 322 transitions. Word has length 100 [2025-03-08 09:56:05,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 09:56:05,699 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 322 transitions. [2025-03-08 09:56:05,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 09:56:05,699 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 322 transitions. [2025-03-08 09:56:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-08 09:56:05,700 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 09:56:05,700 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:56:05,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 09:56:05,700 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 09:56:05,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 09:56:05,700 INFO L85 PathProgramCache]: Analyzing trace with hash -951055608, now seen corresponding path program 1 times [2025-03-08 09:56:05,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 09:56:05,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695804713] [2025-03-08 09:56:05,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 09:56:05,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 09:56:05,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 09:56:05,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 09:56:05,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 09:56:05,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 09:56:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 09:56:15,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 09:56:15,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695804713] [2025-03-08 09:56:15,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695804713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 09:56:15,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 09:56:15,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-08 09:56:15,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43125711] [2025-03-08 09:56:15,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 09:56:15,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 09:56:15,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 09:56:15,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 09:56:15,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-03-08 09:56:15,160 INFO L87 Difference]: Start difference. First operand 220 states and 322 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 3 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15)