./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label12.c --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/eca-rers2012/Problem13_label12.c -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 2216b6fe23bc362f77d3473af93ca10876808f5c3f0da946e2005e7d4e8e688a --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 01:51:21,042 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 01:51:21,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 01:51:21,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 01:51:21,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 01:51:21,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 01:51:21,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 01:51:21,115 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 01:51:21,115 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 01:51:21,115 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 01:51:21,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 01:51:21,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 01:51:21,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 01:51:21,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 01:51:21,115 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 01:51:21,115 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 01:51:21,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 01:51:21,116 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 01:51:21,116 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 01:51:21,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 01:51:21,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 01:51:21,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 01:51:21,117 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 01:51:21,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 01:51:21,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 01:51:21,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 01:51:21,118 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 -> 2216b6fe23bc362f77d3473af93ca10876808f5c3f0da946e2005e7d4e8e688a [2025-03-08 01:51:21,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 01:51:21,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 01:51:21,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 01:51:21,360 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 01:51:21,361 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 01:51:21,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label12.c [2025-03-08 01:51:22,546 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e477c7dbf/d036b6c8c4ca46ec9c725f829cb2e769/FLAGbd4d48a41 [2025-03-08 01:51:22,932 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 01:51:22,933 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label12.c [2025-03-08 01:51:22,964 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e477c7dbf/d036b6c8c4ca46ec9c725f829cb2e769/FLAGbd4d48a41 [2025-03-08 01:51:22,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e477c7dbf/d036b6c8c4ca46ec9c725f829cb2e769 [2025-03-08 01:51:22,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 01:51:22,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 01:51:22,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 01:51:22,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 01:51:22,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 01:51:22,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 01:51:22" (1/1) ... [2025-03-08 01:51:22,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32dcde73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:22, skipping insertion in model container [2025-03-08 01:51:22,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 01:51:22" (1/1) ... [2025-03-08 01:51:23,065 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 01:51:23,212 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/eca-rers2012/Problem13_label12.c[1672,1685] [2025-03-08 01:51:23,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 01:51:23,746 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 01:51:23,756 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/eca-rers2012/Problem13_label12.c[1672,1685] [2025-03-08 01:51:24,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 01:51:24,092 INFO L204 MainTranslator]: Completed translation [2025-03-08 01:51:24,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24 WrapperNode [2025-03-08 01:51:24,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 01:51:24,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 01:51:24,094 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 01:51:24,094 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 01:51:24,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:24,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:24,496 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2025-03-08 01:51:24,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 01:51:24,497 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 01:51:24,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 01:51:24,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 01:51:24,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:24,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:24,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:24,848 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 01:51:24,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:24,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:24,969 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:24,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:25,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:25,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:25,151 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 01:51:25,153 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 01:51:25,153 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 01:51:25,153 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 01:51:25,154 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (1/1) ... [2025-03-08 01:51:25,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 01:51:25,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:51:25,179 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 01:51:25,182 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 01:51:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 01:51:25,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 01:51:25,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 01:51:25,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 01:51:25,257 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 01:51:25,259 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 01:51:29,645 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2025-03-08 01:51:29,645 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2025-03-08 01:51:29,646 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2025-03-08 01:51:29,849 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2025-03-08 01:51:29,849 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 01:51:29,884 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 01:51:29,887 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 01:51:29,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 01:51:29 BoogieIcfgContainer [2025-03-08 01:51:29,887 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 01:51:29,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 01:51:29,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 01:51:29,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 01:51:29,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 01:51:22" (1/3) ... [2025-03-08 01:51:29,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c8bca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 01:51:29, skipping insertion in model container [2025-03-08 01:51:29,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:51:24" (2/3) ... [2025-03-08 01:51:29,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c8bca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 01:51:29, skipping insertion in model container [2025-03-08 01:51:29,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 01:51:29" (3/3) ... [2025-03-08 01:51:29,896 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label12.c [2025-03-08 01:51:29,909 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 01:51:29,910 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label12.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 01:51:29,991 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 01:51:29,999 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;@7970d559, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 01:51:30,001 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 01:51:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8266423357664234) internal successors, (2002), 1097 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 01:51:30,014 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:51:30,014 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:51:30,015 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:51:30,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:51:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1391648518, now seen corresponding path program 1 times [2025-03-08 01:51:30,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:51:30,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38541119] [2025-03-08 01:51:30,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:51:30,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:51:30,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 01:51:30,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 01:51:30,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:51:30,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:51:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:51:30,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:51:30,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38541119] [2025-03-08 01:51:30,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38541119] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:51:30,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:51:30,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:51:30,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835317826] [2025-03-08 01:51:30,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:51:30,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:51:30,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:51:30,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:51:30,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:51:30,241 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8266423357664234) internal successors, (2002), 1097 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:51:33,527 INFO L93 Difference]: Finished difference Result 3147 states and 5803 transitions. [2025-03-08 01:51:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:51:33,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-08 01:51:33,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:51:33,546 INFO L225 Difference]: With dead ends: 3147 [2025-03-08 01:51:33,546 INFO L226 Difference]: Without dead ends: 1964 [2025-03-08 01:51:33,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:51:33,552 INFO L435 NwaCegarLoop]: 759 mSDtfsCounter, 1170 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-08 01:51:33,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 987 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-08 01:51:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2025-03-08 01:51:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1951. [2025-03-08 01:51:33,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 1.6538461538461537) internal successors, (3225), 1950 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3225 transitions. [2025-03-08 01:51:33,651 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3225 transitions. Word has length 9 [2025-03-08 01:51:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:51:33,651 INFO L471 AbstractCegarLoop]: Abstraction has 1951 states and 3225 transitions. [2025-03-08 01:51:33,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3225 transitions. [2025-03-08 01:51:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-08 01:51:33,653 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:51:33,653 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:33,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 01:51:33,654 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:51:33,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:51:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash 606843999, now seen corresponding path program 1 times [2025-03-08 01:51:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:51:33,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849752764] [2025-03-08 01:51:33,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:51:33,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:51:33,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 01:51:33,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 01:51:33,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:51:33,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:51:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:51:33,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:51:33,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849752764] [2025-03-08 01:51:33,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849752764] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:51:33,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:51:33,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:51:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792885891] [2025-03-08 01:51:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:51:33,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:51:33,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:51:33,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:51:33,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:51:33,933 INFO L87 Difference]: Start difference. First operand 1951 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:51:37,338 INFO L93 Difference]: Finished difference Result 5540 states and 9221 transitions. [2025-03-08 01:51:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:51:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2025-03-08 01:51:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:51:37,360 INFO L225 Difference]: With dead ends: 5540 [2025-03-08 01:51:37,360 INFO L226 Difference]: Without dead ends: 3591 [2025-03-08 01:51:37,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:51:37,366 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 923 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-08 01:51:37,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1008 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-08 01:51:37,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2025-03-08 01:51:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 3581. [2025-03-08 01:51:37,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 1.5050279329608938) internal successors, (5388), 3580 states have internal predecessors, (5388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:37,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 5388 transitions. [2025-03-08 01:51:37,497 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 5388 transitions. Word has length 80 [2025-03-08 01:51:37,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:51:37,498 INFO L471 AbstractCegarLoop]: Abstraction has 3581 states and 5388 transitions. [2025-03-08 01:51:37,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:37,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 5388 transitions. [2025-03-08 01:51:37,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 01:51:37,503 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:51:37,503 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:37,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 01:51:37,503 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:51:37,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:51:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1839861318, now seen corresponding path program 1 times [2025-03-08 01:51:37,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:51:37,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441831466] [2025-03-08 01:51:37,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:51:37,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:51:37,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 01:51:37,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 01:51:37,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:51:37,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:51:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:51:37,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:51:37,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441831466] [2025-03-08 01:51:37,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441831466] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:51:37,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:51:37,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:51:37,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373132125] [2025-03-08 01:51:37,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:51:37,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:51:37,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:51:37,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:51:37,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:51:37,690 INFO L87 Difference]: Start difference. First operand 3581 states and 5388 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:51:40,649 INFO L93 Difference]: Finished difference Result 10352 states and 15625 transitions. [2025-03-08 01:51:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:51:40,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-03-08 01:51:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:51:40,670 INFO L225 Difference]: With dead ends: 10352 [2025-03-08 01:51:40,670 INFO L226 Difference]: Without dead ends: 6773 [2025-03-08 01:51:40,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:51:40,678 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 785 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-08 01:51:40,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1171 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-08 01:51:40,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2025-03-08 01:51:40,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6749. [2025-03-08 01:51:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6749 states, 6748 states have (on average 1.3252815649081209) internal successors, (8943), 6748 states have internal predecessors, (8943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:40,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 8943 transitions. [2025-03-08 01:51:40,786 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 8943 transitions. Word has length 94 [2025-03-08 01:51:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:51:40,789 INFO L471 AbstractCegarLoop]: Abstraction has 6749 states and 8943 transitions. [2025-03-08 01:51:40,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 8943 transitions. [2025-03-08 01:51:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-08 01:51:40,791 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:51:40,791 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:40,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 01:51:40,791 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:51:40,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:51:40,791 INFO L85 PathProgramCache]: Analyzing trace with hash -721119111, now seen corresponding path program 1 times [2025-03-08 01:51:40,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:51:40,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468639671] [2025-03-08 01:51:40,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:51:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:51:40,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-08 01:51:40,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-08 01:51:40,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:51:40,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:51:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:51:40,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:51:40,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468639671] [2025-03-08 01:51:40,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468639671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:51:40,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:51:40,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:51:40,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996225591] [2025-03-08 01:51:40,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:51:40,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:51:40,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:51:40,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:51:40,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:51:40,973 INFO L87 Difference]: Start difference. First operand 6749 states and 8943 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:51:43,697 INFO L93 Difference]: Finished difference Result 19871 states and 26319 transitions. [2025-03-08 01:51:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:51:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2025-03-08 01:51:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:51:43,727 INFO L225 Difference]: With dead ends: 19871 [2025-03-08 01:51:43,727 INFO L226 Difference]: Without dead ends: 13124 [2025-03-08 01:51:43,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:51:43,735 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 899 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-08 01:51:43,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 611 Invalid, 3432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-08 01:51:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13124 states. [2025-03-08 01:51:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13124 to 13114. [2025-03-08 01:51:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13114 states, 13113 states have (on average 1.2755281018836269) internal successors, (16726), 13113 states have internal predecessors, (16726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:43,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13114 states to 13114 states and 16726 transitions. [2025-03-08 01:51:43,900 INFO L78 Accepts]: Start accepts. Automaton has 13114 states and 16726 transitions. Word has length 123 [2025-03-08 01:51:43,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:51:43,900 INFO L471 AbstractCegarLoop]: Abstraction has 13114 states and 16726 transitions. [2025-03-08 01:51:43,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:43,900 INFO L276 IsEmpty]: Start isEmpty. Operand 13114 states and 16726 transitions. [2025-03-08 01:51:43,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-03-08 01:51:43,903 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:51:43,903 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:43,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 01:51:43,903 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:51:43,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:51:43,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1707592259, now seen corresponding path program 1 times [2025-03-08 01:51:43,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:51:43,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325436902] [2025-03-08 01:51:43,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:51:43,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:51:43,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-03-08 01:51:43,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-03-08 01:51:43,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:51:43,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:51:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-08 01:51:44,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:51:44,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325436902] [2025-03-08 01:51:44,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325436902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:51:44,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:51:44,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:51:44,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139525083] [2025-03-08 01:51:44,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:51:44,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:51:44,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:51:44,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:51:44,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:51:44,153 INFO L87 Difference]: Start difference. First operand 13114 states and 16726 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:51:46,864 INFO L93 Difference]: Finished difference Result 36461 states and 47023 transitions. [2025-03-08 01:51:46,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:51:46,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2025-03-08 01:51:46,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:51:46,905 INFO L225 Difference]: With dead ends: 36461 [2025-03-08 01:51:46,905 INFO L226 Difference]: Without dead ends: 24136 [2025-03-08 01:51:46,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:51:46,916 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 849 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-08 01:51:46,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1033 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-08 01:51:46,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24136 states. [2025-03-08 01:51:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24136 to 24130. [2025-03-08 01:51:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24130 states, 24129 states have (on average 1.2020804840648183) internal successors, (29005), 24129 states have internal predecessors, (29005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24130 states to 24130 states and 29005 transitions. [2025-03-08 01:51:47,163 INFO L78 Accepts]: Start accepts. Automaton has 24130 states and 29005 transitions. Word has length 206 [2025-03-08 01:51:47,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:51:47,164 INFO L471 AbstractCegarLoop]: Abstraction has 24130 states and 29005 transitions. [2025-03-08 01:51:47,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 24130 states and 29005 transitions. [2025-03-08 01:51:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-03-08 01:51:47,168 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:51:47,168 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:47,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 01:51:47,168 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:51:47,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:51:47,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1252872107, now seen corresponding path program 1 times [2025-03-08 01:51:47,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:51:47,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841099676] [2025-03-08 01:51:47,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:51:47,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:51:47,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-03-08 01:51:47,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-03-08 01:51:47,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:51:47,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:51:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-08 01:51:47,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:51:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841099676] [2025-03-08 01:51:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841099676] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:51:47,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:51:47,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:51:47,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282904458] [2025-03-08 01:51:47,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:51:47,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:51:47,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:51:47,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:51:47,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:51:47,431 INFO L87 Difference]: Start difference. First operand 24130 states and 29005 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:49,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:51:49,895 INFO L93 Difference]: Finished difference Result 43520 states and 52823 transitions. [2025-03-08 01:51:49,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:51:49,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2025-03-08 01:51:49,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:51:49,967 INFO L225 Difference]: With dead ends: 43520 [2025-03-08 01:51:49,967 INFO L226 Difference]: Without dead ends: 24131 [2025-03-08 01:51:49,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:51:49,985 INFO L435 NwaCegarLoop]: 1078 mSDtfsCounter, 676 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-08 01:51:49,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1213 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-08 01:51:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24131 states. [2025-03-08 01:51:50,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24131 to 24130. [2025-03-08 01:51:50,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24130 states, 24129 states have (on average 1.2018732645364498) internal successors, (29000), 24129 states have internal predecessors, (29000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24130 states to 24130 states and 29000 transitions. [2025-03-08 01:51:50,278 INFO L78 Accepts]: Start accepts. Automaton has 24130 states and 29000 transitions. Word has length 210 [2025-03-08 01:51:50,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:51:50,278 INFO L471 AbstractCegarLoop]: Abstraction has 24130 states and 29000 transitions. [2025-03-08 01:51:50,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:50,279 INFO L276 IsEmpty]: Start isEmpty. Operand 24130 states and 29000 transitions. [2025-03-08 01:51:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2025-03-08 01:51:50,281 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:51:50,281 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:51:50,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 01:51:50,281 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:51:50,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:51:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1419449443, now seen corresponding path program 1 times [2025-03-08 01:51:50,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:51:50,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705705004] [2025-03-08 01:51:50,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:51:50,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:51:50,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 223 statements into 1 equivalence classes. [2025-03-08 01:51:50,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 223 of 223 statements. [2025-03-08 01:51:50,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:51:50,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:51:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 01:51:50,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:51:50,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705705004] [2025-03-08 01:51:50,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705705004] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:51:50,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:51:50,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:51:50,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829697270] [2025-03-08 01:51:50,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:51:50,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:51:50,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:51:50,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:51:50,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:51:50,396 INFO L87 Difference]: Start difference. First operand 24130 states and 29000 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:51:53,059 INFO L93 Difference]: Finished difference Result 47314 states and 56987 transitions. [2025-03-08 01:51:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:51:53,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2025-03-08 01:51:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:51:53,092 INFO L225 Difference]: With dead ends: 47314 [2025-03-08 01:51:53,092 INFO L226 Difference]: Without dead ends: 23973 [2025-03-08 01:51:53,111 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 01:51:53,112 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 1037 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 01:51:53,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1657 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 01:51:53,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23973 states. [2025-03-08 01:51:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23973 to 23968. [2025-03-08 01:51:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23968 states, 23967 states have (on average 1.1344348479158843) internal successors, (27189), 23967 states have internal predecessors, (27189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23968 states to 23968 states and 27189 transitions. [2025-03-08 01:51:53,385 INFO L78 Accepts]: Start accepts. Automaton has 23968 states and 27189 transitions. Word has length 223 [2025-03-08 01:51:53,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:51:53,386 INFO L471 AbstractCegarLoop]: Abstraction has 23968 states and 27189 transitions. [2025-03-08 01:51:53,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 23968 states and 27189 transitions. [2025-03-08 01:51:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2025-03-08 01:51:53,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:51:53,392 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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 01:51:53,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 01:51:53,393 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:51:53,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:51:53,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1368860107, now seen corresponding path program 1 times [2025-03-08 01:51:53,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:51:53,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96650288] [2025-03-08 01:51:53,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:51:53,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:51:53,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 242 statements into 1 equivalence classes. [2025-03-08 01:51:53,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 242 of 242 statements. [2025-03-08 01:51:53,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:51:53,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:51:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 01:51:53,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:51:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96650288] [2025-03-08 01:51:53,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96650288] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:51:53,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:51:53,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:51:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151314893] [2025-03-08 01:51:53,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:51:53,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:51:53,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:51:53,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:51:53,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:51:53,731 INFO L87 Difference]: Start difference. First operand 23968 states and 27189 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:56,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:51:56,007 INFO L93 Difference]: Finished difference Result 47147 states and 53579 transitions. [2025-03-08 01:51:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:51:56,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2025-03-08 01:51:56,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:51:56,037 INFO L225 Difference]: With dead ends: 47147 [2025-03-08 01:51:56,037 INFO L226 Difference]: Without dead ends: 23968 [2025-03-08 01:51:56,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:51:56,053 INFO L435 NwaCegarLoop]: 1056 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-08 01:51:56,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1185 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-08 01:51:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23968 states. [2025-03-08 01:51:56,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23968 to 23968. [2025-03-08 01:51:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23968 states, 23967 states have (on average 1.1342262277297952) internal successors, (27184), 23967 states have internal predecessors, (27184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23968 states to 23968 states and 27184 transitions. [2025-03-08 01:51:56,338 INFO L78 Accepts]: Start accepts. Automaton has 23968 states and 27184 transitions. Word has length 242 [2025-03-08 01:51:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:51:56,338 INFO L471 AbstractCegarLoop]: Abstraction has 23968 states and 27184 transitions. [2025-03-08 01:51:56,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:51:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 23968 states and 27184 transitions. [2025-03-08 01:51:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2025-03-08 01:51:56,341 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:51:56,341 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 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 01:51:56,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 01:51:56,341 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:51:56,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:51:56,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2119215763, now seen corresponding path program 1 times [2025-03-08 01:51:56,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:51:56,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687214480] [2025-03-08 01:51:56,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:51:56,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:51:56,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-08 01:51:56,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-08 01:51:56,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:51:56,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:51:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-08 01:51:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:51:56,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687214480] [2025-03-08 01:51:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687214480] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:51:56,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:51:56,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:51:56,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81263684] [2025-03-08 01:51:56,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:51:56,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 01:51:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:51:56,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 01:51:56,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 01:51:56,514 INFO L87 Difference]: Start difference. First operand 23968 states and 27184 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:01,943 INFO L93 Difference]: Finished difference Result 85143 states and 97159 transitions. [2025-03-08 01:52:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 01:52:01,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2025-03-08 01:52:01,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:02,004 INFO L225 Difference]: With dead ends: 85143 [2025-03-08 01:52:02,004 INFO L226 Difference]: Without dead ends: 61964 [2025-03-08 01:52:02,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 01:52:02,016 INFO L435 NwaCegarLoop]: 627 mSDtfsCounter, 1740 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 6753 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 7811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 6753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:02,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 867 Invalid, 7811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 6753 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2025-03-08 01:52:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61964 states. [2025-03-08 01:52:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61964 to 60259. [2025-03-08 01:52:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60259 states, 60258 states have (on average 1.1227056988283712) internal successors, (67652), 60258 states have internal predecessors, (67652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60259 states to 60259 states and 67652 transitions. [2025-03-08 01:52:02,503 INFO L78 Accepts]: Start accepts. Automaton has 60259 states and 67652 transitions. Word has length 249 [2025-03-08 01:52:02,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:02,503 INFO L471 AbstractCegarLoop]: Abstraction has 60259 states and 67652 transitions. [2025-03-08 01:52:02,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 60259 states and 67652 transitions. [2025-03-08 01:52:02,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2025-03-08 01:52:02,507 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:02,507 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 01:52:02,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 01:52:02,507 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:02,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash 559167721, now seen corresponding path program 1 times [2025-03-08 01:52:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489713210] [2025-03-08 01:52:02,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:02,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:02,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-08 01:52:02,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-08 01:52:02,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:02,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-08 01:52:02,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:02,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489713210] [2025-03-08 01:52:02,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489713210] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:02,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:02,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:02,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094493588] [2025-03-08 01:52:02,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:02,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:02,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:02,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:02,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:02,713 INFO L87 Difference]: Start difference. First operand 60259 states and 67652 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:05,948 INFO L93 Difference]: Finished difference Result 146519 states and 166338 transitions. [2025-03-08 01:52:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:05,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2025-03-08 01:52:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:06,033 INFO L225 Difference]: With dead ends: 146519 [2025-03-08 01:52:06,033 INFO L226 Difference]: Without dead ends: 83896 [2025-03-08 01:52:06,073 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 01:52:06,073 INFO L435 NwaCegarLoop]: 1827 mSDtfsCounter, 746 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2589 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 2589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:06,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1967 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 2589 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-08 01:52:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83896 states. [2025-03-08 01:52:06,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83896 to 80709. [2025-03-08 01:52:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80709 states, 80708 states have (on average 1.1046984189919216) internal successors, (89158), 80708 states have internal predecessors, (89158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80709 states to 80709 states and 89158 transitions. [2025-03-08 01:52:06,926 INFO L78 Accepts]: Start accepts. Automaton has 80709 states and 89158 transitions. Word has length 306 [2025-03-08 01:52:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:06,926 INFO L471 AbstractCegarLoop]: Abstraction has 80709 states and 89158 transitions. [2025-03-08 01:52:06,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 80709 states and 89158 transitions. [2025-03-08 01:52:06,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2025-03-08 01:52:06,930 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:06,930 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:06,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 01:52:06,930 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:06,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:06,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1254085016, now seen corresponding path program 1 times [2025-03-08 01:52:06,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:06,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793222954] [2025-03-08 01:52:06,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:06,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:06,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 335 statements into 1 equivalence classes. [2025-03-08 01:52:06,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 335 of 335 statements. [2025-03-08 01:52:06,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:06,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 182 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-08 01:52:07,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:07,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793222954] [2025-03-08 01:52:07,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793222954] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 01:52:07,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885712871] [2025-03-08 01:52:07,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:07,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 01:52:07,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:52:07,963 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 01:52:07,964 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 01:52:08,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 335 statements into 1 equivalence classes. [2025-03-08 01:52:08,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 335 of 335 statements. [2025-03-08 01:52:08,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:08,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:08,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 01:52:08,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 01:52:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-03-08 01:52:08,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 01:52:08,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885712871] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:08,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 01:52:08,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-08 01:52:08,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065601614] [2025-03-08 01:52:08,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:08,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:08,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:08,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:08,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-08 01:52:08,225 INFO L87 Difference]: Start difference. First operand 80709 states and 89158 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:10,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:10,869 INFO L93 Difference]: Finished difference Result 160627 states and 177521 transitions. [2025-03-08 01:52:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:10,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2025-03-08 01:52:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:10,957 INFO L225 Difference]: With dead ends: 160627 [2025-03-08 01:52:10,957 INFO L226 Difference]: Without dead ends: 80707 [2025-03-08 01:52:11,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-08 01:52:11,008 INFO L435 NwaCegarLoop]: 1344 mSDtfsCounter, 1113 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:11,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1423 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-08 01:52:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80707 states. [2025-03-08 01:52:11,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80707 to 80706. [2025-03-08 01:52:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80706 states, 80705 states have (on average 1.0795861470788675) internal successors, (87128), 80705 states have internal predecessors, (87128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80706 states to 80706 states and 87128 transitions. [2025-03-08 01:52:11,841 INFO L78 Accepts]: Start accepts. Automaton has 80706 states and 87128 transitions. Word has length 335 [2025-03-08 01:52:11,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:11,842 INFO L471 AbstractCegarLoop]: Abstraction has 80706 states and 87128 transitions. [2025-03-08 01:52:11,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:11,842 INFO L276 IsEmpty]: Start isEmpty. Operand 80706 states and 87128 transitions. [2025-03-08 01:52:11,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2025-03-08 01:52:11,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:11,845 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 01:52:11,851 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 01:52:12,045 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,SelfDestructingSolverStorable10 [2025-03-08 01:52:12,046 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:12,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash -983994665, now seen corresponding path program 1 times [2025-03-08 01:52:12,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:12,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634158294] [2025-03-08 01:52:12,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:12,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:12,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 365 statements into 1 equivalence classes. [2025-03-08 01:52:12,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 365 of 365 statements. [2025-03-08 01:52:12,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:12,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2025-03-08 01:52:12,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:12,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634158294] [2025-03-08 01:52:12,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634158294] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:12,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:12,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:12,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152289821] [2025-03-08 01:52:12,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:12,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:12,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:12,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:12,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:12,218 INFO L87 Difference]: Start difference. First operand 80706 states and 87128 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:15,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:15,478 INFO L93 Difference]: Finished difference Result 187388 states and 204112 transitions. [2025-03-08 01:52:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:15,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 365 [2025-03-08 01:52:15,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:15,621 INFO L225 Difference]: With dead ends: 187388 [2025-03-08 01:52:15,621 INFO L226 Difference]: Without dead ends: 107471 [2025-03-08 01:52:15,659 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 01:52:15,659 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 874 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2418 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 3338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:15,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 905 Invalid, 3338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2418 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-08 01:52:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107471 states. [2025-03-08 01:52:16,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107471 to 105091. [2025-03-08 01:52:16,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105091 states, 105090 states have (on average 1.0853268626891237) internal successors, (114057), 105090 states have internal predecessors, (114057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105091 states to 105091 states and 114057 transitions. [2025-03-08 01:52:17,279 INFO L78 Accepts]: Start accepts. Automaton has 105091 states and 114057 transitions. Word has length 365 [2025-03-08 01:52:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:17,279 INFO L471 AbstractCegarLoop]: Abstraction has 105091 states and 114057 transitions. [2025-03-08 01:52:17,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 105091 states and 114057 transitions. [2025-03-08 01:52:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2025-03-08 01:52:17,284 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:17,284 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:17,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 01:52:17,284 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:17,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2033075493, now seen corresponding path program 1 times [2025-03-08 01:52:17,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:17,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493279994] [2025-03-08 01:52:17,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:17,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:17,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 403 statements into 1 equivalence classes. [2025-03-08 01:52:17,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 403 of 403 statements. [2025-03-08 01:52:17,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:17,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2025-03-08 01:52:17,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:17,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493279994] [2025-03-08 01:52:17,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493279994] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:17,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:17,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:17,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594742931] [2025-03-08 01:52:17,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:17,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:17,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:17,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:17,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:17,601 INFO L87 Difference]: Start difference. First operand 105091 states and 114057 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:20,596 INFO L93 Difference]: Finished difference Result 236166 states and 257963 transitions. [2025-03-08 01:52:20,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:20,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2025-03-08 01:52:20,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:20,765 INFO L225 Difference]: With dead ends: 236166 [2025-03-08 01:52:20,765 INFO L226 Difference]: Without dead ends: 131077 [2025-03-08 01:52:20,822 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 01:52:20,822 INFO L435 NwaCegarLoop]: 1740 mSDtfsCounter, 787 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 3232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:20,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1882 Invalid, 3232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-08 01:52:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131077 states. [2025-03-08 01:52:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131077 to 130274. [2025-03-08 01:52:22,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130274 states, 130273 states have (on average 1.074650925364427) internal successors, (139998), 130273 states have internal predecessors, (139998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:22,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130274 states to 130274 states and 139998 transitions. [2025-03-08 01:52:22,313 INFO L78 Accepts]: Start accepts. Automaton has 130274 states and 139998 transitions. Word has length 403 [2025-03-08 01:52:22,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:22,314 INFO L471 AbstractCegarLoop]: Abstraction has 130274 states and 139998 transitions. [2025-03-08 01:52:22,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 130274 states and 139998 transitions. [2025-03-08 01:52:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2025-03-08 01:52:22,320 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:22,320 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:22,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 01:52:22,320 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:22,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:22,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1747722731, now seen corresponding path program 1 times [2025-03-08 01:52:22,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:22,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821235223] [2025-03-08 01:52:22,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:22,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:22,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-03-08 01:52:22,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-03-08 01:52:22,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:22,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 251 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-08 01:52:23,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821235223] [2025-03-08 01:52:23,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821235223] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 01:52:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240632160] [2025-03-08 01:52:23,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:23,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 01:52:23,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 01:52:23,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 01:52:23,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 01:52:23,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 439 statements into 1 equivalence classes. [2025-03-08 01:52:23,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 439 of 439 statements. [2025-03-08 01:52:23,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:23,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:23,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 01:52:23,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 01:52:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2025-03-08 01:52:23,801 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 01:52:23,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240632160] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:23,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 01:52:23,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2025-03-08 01:52:23,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613173600] [2025-03-08 01:52:23,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:23,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:23,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:23,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:23,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-08 01:52:23,805 INFO L87 Difference]: Start difference. First operand 130274 states and 139998 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:26,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:26,623 INFO L93 Difference]: Finished difference Result 253432 states and 273375 transitions. [2025-03-08 01:52:26,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:26,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 439 [2025-03-08 01:52:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:26,780 INFO L225 Difference]: With dead ends: 253432 [2025-03-08 01:52:26,780 INFO L226 Difference]: Without dead ends: 139693 [2025-03-08 01:52:26,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-03-08 01:52:26,844 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 1128 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 793 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:26,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 367 Invalid, 3047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [793 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-08 01:52:26,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139693 states. [2025-03-08 01:52:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139693 to 139693. [2025-03-08 01:52:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139693 states, 139692 states have (on average 1.070233084213842) internal successors, (149503), 139692 states have internal predecessors, (149503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139693 states to 139693 states and 149503 transitions. [2025-03-08 01:52:28,298 INFO L78 Accepts]: Start accepts. Automaton has 139693 states and 149503 transitions. Word has length 439 [2025-03-08 01:52:28,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:28,298 INFO L471 AbstractCegarLoop]: Abstraction has 139693 states and 149503 transitions. [2025-03-08 01:52:28,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:28,298 INFO L276 IsEmpty]: Start isEmpty. Operand 139693 states and 149503 transitions. [2025-03-08 01:52:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2025-03-08 01:52:28,305 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:28,305 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:28,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 01:52:28,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 01:52:28,506 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:28,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:28,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1722272420, now seen corresponding path program 1 times [2025-03-08 01:52:28,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:28,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012260059] [2025-03-08 01:52:28,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:28,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:28,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 474 statements into 1 equivalence classes. [2025-03-08 01:52:28,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 474 of 474 statements. [2025-03-08 01:52:28,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:28,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-08 01:52:29,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:29,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012260059] [2025-03-08 01:52:29,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012260059] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:29,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:29,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108714709] [2025-03-08 01:52:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:29,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 01:52:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:29,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 01:52:29,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 01:52:29,044 INFO L87 Difference]: Start difference. First operand 139693 states and 149503 transitions. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:32,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:32,833 INFO L93 Difference]: Finished difference Result 272296 states and 291876 transitions. [2025-03-08 01:52:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 01:52:32,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 474 [2025-03-08 01:52:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:32,990 INFO L225 Difference]: With dead ends: 272296 [2025-03-08 01:52:32,991 INFO L226 Difference]: Without dead ends: 147562 [2025-03-08 01:52:33,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 01:52:33,057 INFO L435 NwaCegarLoop]: 767 mSDtfsCounter, 1354 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 4545 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 4545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:33,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 1047 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 4545 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-08 01:52:33,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147562 states. [2025-03-08 01:52:34,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147562 to 141265. [2025-03-08 01:52:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141265 states, 141264 states have (on average 1.0648289727035904) internal successors, (150422), 141264 states have internal predecessors, (150422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141265 states to 141265 states and 150422 transitions. [2025-03-08 01:52:34,742 INFO L78 Accepts]: Start accepts. Automaton has 141265 states and 150422 transitions. Word has length 474 [2025-03-08 01:52:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:34,742 INFO L471 AbstractCegarLoop]: Abstraction has 141265 states and 150422 transitions. [2025-03-08 01:52:34,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 141265 states and 150422 transitions. [2025-03-08 01:52:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2025-03-08 01:52:34,748 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:34,748 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:34,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 01:52:34,748 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:34,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:34,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1883344010, now seen corresponding path program 1 times [2025-03-08 01:52:34,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:34,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069823242] [2025-03-08 01:52:34,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:34,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:34,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 494 statements into 1 equivalence classes. [2025-03-08 01:52:34,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 494 of 494 statements. [2025-03-08 01:52:34,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:34,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2025-03-08 01:52:35,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:35,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069823242] [2025-03-08 01:52:35,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069823242] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:35,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:35,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:52:35,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256275529] [2025-03-08 01:52:35,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:35,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:35,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:35,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:35,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:35,177 INFO L87 Difference]: Start difference. First operand 141265 states and 150422 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:37,164 INFO L93 Difference]: Finished difference Result 264406 states and 281950 transitions. [2025-03-08 01:52:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:37,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 494 [2025-03-08 01:52:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:37,333 INFO L225 Difference]: With dead ends: 264406 [2025-03-08 01:52:37,333 INFO L226 Difference]: Without dead ends: 139676 [2025-03-08 01:52:37,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:52:37,370 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 1555 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:37,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 278 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 01:52:37,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139676 states. [2025-03-08 01:52:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139676 to 139675. [2025-03-08 01:52:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139675 states, 139674 states have (on average 1.063841516674542) internal successors, (148591), 139674 states have internal predecessors, (148591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:39,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139675 states to 139675 states and 148591 transitions. [2025-03-08 01:52:39,131 INFO L78 Accepts]: Start accepts. Automaton has 139675 states and 148591 transitions. Word has length 494 [2025-03-08 01:52:39,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:39,132 INFO L471 AbstractCegarLoop]: Abstraction has 139675 states and 148591 transitions. [2025-03-08 01:52:39,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 139675 states and 148591 transitions. [2025-03-08 01:52:39,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2025-03-08 01:52:39,141 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:39,141 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:39,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 01:52:39,141 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:39,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash 571990061, now seen corresponding path program 1 times [2025-03-08 01:52:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:39,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767021188] [2025-03-08 01:52:39,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:39,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 534 statements into 1 equivalence classes. [2025-03-08 01:52:39,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 534 of 534 statements. [2025-03-08 01:52:39,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:39,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2025-03-08 01:52:39,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:39,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767021188] [2025-03-08 01:52:39,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767021188] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:39,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:39,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 01:52:39,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765820847] [2025-03-08 01:52:39,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:39,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:39,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:39,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:39,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:39,411 INFO L87 Difference]: Start difference. First operand 139675 states and 148591 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 01:52:42,451 INFO L93 Difference]: Finished difference Result 262826 states and 280116 transitions. [2025-03-08 01:52:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 01:52:42,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 534 [2025-03-08 01:52:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 01:52:42,612 INFO L225 Difference]: With dead ends: 262826 [2025-03-08 01:52:42,612 INFO L226 Difference]: Without dead ends: 139686 [2025-03-08 01:52:42,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:52:42,897 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 574 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 01:52:42,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1067 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 01:52:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139686 states. [2025-03-08 01:52:43,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139686 to 138888. [2025-03-08 01:52:43,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138888 states, 138887 states have (on average 1.0636704659183365) internal successors, (147730), 138887 states have internal predecessors, (147730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138888 states to 138888 states and 147730 transitions. [2025-03-08 01:52:44,067 INFO L78 Accepts]: Start accepts. Automaton has 138888 states and 147730 transitions. Word has length 534 [2025-03-08 01:52:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 01:52:44,068 INFO L471 AbstractCegarLoop]: Abstraction has 138888 states and 147730 transitions. [2025-03-08 01:52:44,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 01:52:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 138888 states and 147730 transitions. [2025-03-08 01:52:44,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2025-03-08 01:52:44,077 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 01:52:44,077 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:44,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 01:52:44,077 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 01:52:44,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 01:52:44,077 INFO L85 PathProgramCache]: Analyzing trace with hash 156196427, now seen corresponding path program 1 times [2025-03-08 01:52:44,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 01:52:44,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413773329] [2025-03-08 01:52:44,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 01:52:44,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 01:52:44,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 543 statements into 1 equivalence classes. [2025-03-08 01:52:44,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 543 of 543 statements. [2025-03-08 01:52:44,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 01:52:44,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 01:52:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 773 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2025-03-08 01:52:44,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 01:52:44,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413773329] [2025-03-08 01:52:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413773329] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 01:52:44,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 01:52:44,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 01:52:44,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480626078] [2025-03-08 01:52:44,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 01:52:44,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 01:52:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 01:52:44,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 01:52:44,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 01:52:44,431 INFO L87 Difference]: Start difference. First operand 138888 states and 147730 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)