./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/Problem03_label14.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 57f7a1998dcd55fec053068d0046a0ca66d4d8a7aa0cff34b96de19d20fe9283 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 09:50:14,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:50:14,426 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 09:50:14,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:50:14,433 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:50:14,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:50:14,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:50:14,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:50:14,447 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:50:14,447 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:50:14,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:50:14,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:50:14,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:50:14,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:50:14,447 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:50:14,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:50:14,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:50:14,447 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:50:14,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 09:50:14,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:50:14,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:50:14,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:50:14,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:50:14,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:50:14,448 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:50:14,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:50:14,448 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:50:14,448 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:50:14,448 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:50:14,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:50:14,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:50:14,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:50:14,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:50:14,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:50:14,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:50:14,449 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:50:14,449 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:50:14,449 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 09:50:14,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 09:50:14,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:50:14,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:50:14,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:50:14,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:50:14,450 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 -> 57f7a1998dcd55fec053068d0046a0ca66d4d8a7aa0cff34b96de19d20fe9283 [2025-03-03 09:50:14,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:50:14,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:50:14,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:50:14,690 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:50:14,691 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:50:14,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label14.c [2025-03-03 09:50:15,794 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a6cc2d4/53f727777a3c4cfead842738e8d5f6ee/FLAGe76c942b6 [2025-03-03 09:50:16,156 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:50:16,157 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label14.c [2025-03-03 09:50:16,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a6cc2d4/53f727777a3c4cfead842738e8d5f6ee/FLAGe76c942b6 [2025-03-03 09:50:16,361 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01a6cc2d4/53f727777a3c4cfead842738e8d5f6ee [2025-03-03 09:50:16,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:50:16,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:50:16,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:50:16,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:50:16,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:50:16,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:16,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7c1208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16, skipping insertion in model container [2025-03-03 09:50:16,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:16,423 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:50:16,769 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/Problem03_label14.c[57171,57184] [2025-03-03 09:50:16,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:50:16,802 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:50:16,915 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/Problem03_label14.c[57171,57184] [2025-03-03 09:50:16,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:50:16,947 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:50:16,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16 WrapperNode [2025-03-03 09:50:16,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:50:16,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:50:16,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:50:16,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:50:16,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:16,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,061 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1769 [2025-03-03 09:50:17,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:50:17,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:50:17,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:50:17,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:50:17,069 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,121 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]. [2025-03-03 09:50:17,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,156 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:50:17,179 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:50:17,179 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:50:17,180 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:50:17,181 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (1/1) ... [2025-03-03 09:50:17,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:50:17,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:50:17,234 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) [2025-03-03 09:50:17,240 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 [2025-03-03 09:50:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:50:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 09:50:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:50:17,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:50:17,318 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:50:17,319 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:50:18,724 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2025-03-03 09:50:18,725 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:50:18,741 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:50:18,741 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:50:18,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:50:18 BoogieIcfgContainer [2025-03-03 09:50:18,741 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:50:18,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:50:18,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:50:18,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:50:18,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:50:16" (1/3) ... [2025-03-03 09:50:18,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a64e595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:50:18, skipping insertion in model container [2025-03-03 09:50:18,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:50:16" (2/3) ... [2025-03-03 09:50:18,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a64e595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:50:18, skipping insertion in model container [2025-03-03 09:50:18,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:50:18" (3/3) ... [2025-03-03 09:50:18,751 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem03_label14.c [2025-03-03 09:50:18,762 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:50:18,766 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label14.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 09:50:18,816 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:50:18,826 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;@54af1cee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:50:18,826 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:50:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.7266666666666666) internal successors, (518), 301 states have internal predecessors, (518), 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) [2025-03-03 09:50:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-03 09:50:18,844 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:18,844 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:50:18,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:18,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1896954827, now seen corresponding path program 1 times [2025-03-03 09:50:18,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:18,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878495630] [2025-03-03 09:50:18,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:18,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:18,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-03 09:50:19,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-03 09:50:19,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:19,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:50:19,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:19,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878495630] [2025-03-03 09:50:19,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878495630] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:19,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:19,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:50:19,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895875137] [2025-03-03 09:50:19,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:19,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:19,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:19,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:19,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:50:19,676 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.7266666666666666) internal successors, (518), 301 states have internal predecessors, (518), 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 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 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) [2025-03-03 09:50:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:20,501 INFO L93 Difference]: Finished difference Result 810 states and 1442 transitions. [2025-03-03 09:50:20,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:20,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 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 170 [2025-03-03 09:50:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:20,510 INFO L225 Difference]: With dead ends: 810 [2025-03-03 09:50:20,510 INFO L226 Difference]: Without dead ends: 444 [2025-03-03 09:50:20,513 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 [2025-03-03 09:50:20,515 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 84 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:20,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 231 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-03 09:50:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2025-03-03 09:50:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2025-03-03 09:50:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.4288939051918736) internal successors, (633), 443 states have internal predecessors, (633), 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) [2025-03-03 09:50:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 633 transitions. [2025-03-03 09:50:20,563 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 633 transitions. Word has length 170 [2025-03-03 09:50:20,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:20,564 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 633 transitions. [2025-03-03 09:50:20,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 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) [2025-03-03 09:50:20,564 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 633 transitions. [2025-03-03 09:50:20,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-03 09:50:20,566 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:20,566 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 09:50:20,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 09:50:20,567 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:20,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:20,567 INFO L85 PathProgramCache]: Analyzing trace with hash -618282079, now seen corresponding path program 1 times [2025-03-03 09:50:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:20,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069855624] [2025-03-03 09:50:20,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:20,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:20,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-03 09:50:20,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-03 09:50:20,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:20,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:50:20,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:20,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069855624] [2025-03-03 09:50:20,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069855624] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:20,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:20,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:50:20,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153463368] [2025-03-03 09:50:20,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:20,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:20,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:20,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:20,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:50:20,753 INFO L87 Difference]: Start difference. First operand 444 states and 633 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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) [2025-03-03 09:50:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:21,391 INFO L93 Difference]: Finished difference Result 1312 states and 1878 transitions. [2025-03-03 09:50:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:21,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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 178 [2025-03-03 09:50:21,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:21,396 INFO L225 Difference]: With dead ends: 1312 [2025-03-03 09:50:21,396 INFO L226 Difference]: Without dead ends: 870 [2025-03-03 09:50:21,399 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 [2025-03-03 09:50:21,399 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:21,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 93 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:50:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2025-03-03 09:50:21,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 856. [2025-03-03 09:50:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.3941520467836257) internal successors, (1192), 855 states have internal predecessors, (1192), 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) [2025-03-03 09:50:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1192 transitions. [2025-03-03 09:50:21,429 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1192 transitions. Word has length 178 [2025-03-03 09:50:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:21,429 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1192 transitions. [2025-03-03 09:50:21,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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) [2025-03-03 09:50:21,430 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1192 transitions. [2025-03-03 09:50:21,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2025-03-03 09:50:21,432 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:21,432 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:50:21,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 09:50:21,432 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:21,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash -269961798, now seen corresponding path program 1 times [2025-03-03 09:50:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:21,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092152] [2025-03-03 09:50:21,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:21,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:21,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 190 statements into 1 equivalence classes. [2025-03-03 09:50:21,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 190 of 190 statements. [2025-03-03 09:50:21,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:21,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 09:50:21,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:21,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092152] [2025-03-03 09:50:21,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092152] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:50:21,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133386457] [2025-03-03 09:50:21,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:21,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:50:21,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:50:21,693 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) [2025-03-03 09:50:21,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 09:50:21,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 190 statements into 1 equivalence classes. [2025-03-03 09:50:21,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 190 of 190 statements. [2025-03-03 09:50:21,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:21,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:21,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:50:21,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:50:21,904 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-03 09:50:21,905 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:50:21,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133386457] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:21,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:50:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-03-03 09:50:21,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358590337] [2025-03-03 09:50:21,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:21,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:21,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:21,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:21,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:50:21,906 INFO L87 Difference]: Start difference. First operand 856 states and 1192 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 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) [2025-03-03 09:50:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:22,133 INFO L93 Difference]: Finished difference Result 2562 states and 3570 transitions. [2025-03-03 09:50:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:22,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 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 190 [2025-03-03 09:50:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:22,139 INFO L225 Difference]: With dead ends: 2562 [2025-03-03 09:50:22,139 INFO L226 Difference]: Without dead ends: 1708 [2025-03-03 09:50:22,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:50:22,143 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 360 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:22,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 601 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 09:50:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2025-03-03 09:50:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1705. [2025-03-03 09:50:22,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1704 states have (on average 1.3937793427230047) internal successors, (2375), 1704 states have internal predecessors, (2375), 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) [2025-03-03 09:50:22,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2375 transitions. [2025-03-03 09:50:22,186 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2375 transitions. Word has length 190 [2025-03-03 09:50:22,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:22,187 INFO L471 AbstractCegarLoop]: Abstraction has 1705 states and 2375 transitions. [2025-03-03 09:50:22,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 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) [2025-03-03 09:50:22,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2375 transitions. [2025-03-03 09:50:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-03-03 09:50:22,190 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:22,190 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2025-03-03 09:50:22,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 09:50:22,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:50:22,394 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:22,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash 966002982, now seen corresponding path program 1 times [2025-03-03 09:50:22,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:22,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848593654] [2025-03-03 09:50:22,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:22,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:22,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-03-03 09:50:22,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-03-03 09:50:22,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:22,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-03 09:50:22,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:22,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848593654] [2025-03-03 09:50:22,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848593654] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:22,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:22,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:50:22,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529041134] [2025-03-03 09:50:22,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:22,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:22,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:22,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:22,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:50:22,536 INFO L87 Difference]: Start difference. First operand 1705 states and 2375 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 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) [2025-03-03 09:50:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:22,893 INFO L93 Difference]: Finished difference Result 3368 states and 4692 transitions. [2025-03-03 09:50:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:22,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 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 198 [2025-03-03 09:50:22,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:22,899 INFO L225 Difference]: With dead ends: 3368 [2025-03-03 09:50:22,900 INFO L226 Difference]: Without dead ends: 1665 [2025-03-03 09:50:22,901 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 [2025-03-03 09:50:22,903 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 326 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:22,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:50:22,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2025-03-03 09:50:22,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1665. [2025-03-03 09:50:22,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 1.3527644230769231) internal successors, (2251), 1664 states have internal predecessors, (2251), 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) [2025-03-03 09:50:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2251 transitions. [2025-03-03 09:50:22,932 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2251 transitions. Word has length 198 [2025-03-03 09:50:22,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:22,932 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2251 transitions. [2025-03-03 09:50:22,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 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) [2025-03-03 09:50:22,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2251 transitions. [2025-03-03 09:50:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2025-03-03 09:50:22,935 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:22,935 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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] [2025-03-03 09:50:22,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 09:50:22,935 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:22,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:22,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1336597395, now seen corresponding path program 1 times [2025-03-03 09:50:22,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036096394] [2025-03-03 09:50:22,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:22,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:22,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 199 statements into 1 equivalence classes. [2025-03-03 09:50:22,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 199 of 199 statements. [2025-03-03 09:50:22,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:22,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-03 09:50:23,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:23,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036096394] [2025-03-03 09:50:23,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036096394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:23,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:23,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:50:23,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326893273] [2025-03-03 09:50:23,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:23,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:23,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:23,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:23,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:50:23,051 INFO L87 Difference]: Start difference. First operand 1665 states and 2251 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2025-03-03 09:50:23,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:23,685 INFO L93 Difference]: Finished difference Result 4961 states and 6709 transitions. [2025-03-03 09:50:23,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:23,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 199 [2025-03-03 09:50:23,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:23,695 INFO L225 Difference]: With dead ends: 4961 [2025-03-03 09:50:23,696 INFO L226 Difference]: Without dead ends: 3298 [2025-03-03 09:50:23,698 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 [2025-03-03 09:50:23,699 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 245 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:23,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 328 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:50:23,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2025-03-03 09:50:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 3295. [2025-03-03 09:50:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3295 states, 3294 states have (on average 1.2680631451123254) internal successors, (4177), 3294 states have internal predecessors, (4177), 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) [2025-03-03 09:50:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3295 states to 3295 states and 4177 transitions. [2025-03-03 09:50:23,756 INFO L78 Accepts]: Start accepts. Automaton has 3295 states and 4177 transitions. Word has length 199 [2025-03-03 09:50:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:23,757 INFO L471 AbstractCegarLoop]: Abstraction has 3295 states and 4177 transitions. [2025-03-03 09:50:23,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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) [2025-03-03 09:50:23,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3295 states and 4177 transitions. [2025-03-03 09:50:23,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2025-03-03 09:50:23,764 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:23,765 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 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] [2025-03-03 09:50:23,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 09:50:23,765 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:23,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:23,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1354779794, now seen corresponding path program 1 times [2025-03-03 09:50:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:23,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557408730] [2025-03-03 09:50:23,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:23,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:23,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 202 statements into 1 equivalence classes. [2025-03-03 09:50:23,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 202 of 202 statements. [2025-03-03 09:50:23,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:23,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 09:50:23,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:23,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557408730] [2025-03-03 09:50:23,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557408730] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:23,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:23,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:50:23,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924544530] [2025-03-03 09:50:23,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:23,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:50:23,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:23,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:50:23,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:50:23,981 INFO L87 Difference]: Start difference. First operand 3295 states and 4177 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 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) [2025-03-03 09:50:25,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:25,071 INFO L93 Difference]: Finished difference Result 13161 states and 16687 transitions. [2025-03-03 09:50:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:50:25,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 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 202 [2025-03-03 09:50:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:25,099 INFO L225 Difference]: With dead ends: 13161 [2025-03-03 09:50:25,099 INFO L226 Difference]: Without dead ends: 9868 [2025-03-03 09:50:25,105 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 [2025-03-03 09:50:25,106 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 889 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:25,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 66 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-03 09:50:25,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9868 states. [2025-03-03 09:50:25,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9868 to 9862. [2025-03-03 09:50:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9862 states, 9861 states have (on average 1.262549437176757) internal successors, (12450), 9861 states have internal predecessors, (12450), 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) [2025-03-03 09:50:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9862 states to 9862 states and 12450 transitions. [2025-03-03 09:50:25,294 INFO L78 Accepts]: Start accepts. Automaton has 9862 states and 12450 transitions. Word has length 202 [2025-03-03 09:50:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:25,294 INFO L471 AbstractCegarLoop]: Abstraction has 9862 states and 12450 transitions. [2025-03-03 09:50:25,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 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) [2025-03-03 09:50:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 9862 states and 12450 transitions. [2025-03-03 09:50:25,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2025-03-03 09:50:25,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:25,300 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 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] [2025-03-03 09:50:25,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 09:50:25,301 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:25,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:25,301 INFO L85 PathProgramCache]: Analyzing trace with hash 708983398, now seen corresponding path program 1 times [2025-03-03 09:50:25,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:25,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892546981] [2025-03-03 09:50:25,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:25,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:25,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 205 statements into 1 equivalence classes. [2025-03-03 09:50:25,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 205 of 205 statements. [2025-03-03 09:50:25,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:25,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-03 09:50:25,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:25,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892546981] [2025-03-03 09:50:25,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892546981] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:25,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:25,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:50:25,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710814099] [2025-03-03 09:50:25,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:25,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:25,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:25,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:25,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:50:25,512 INFO L87 Difference]: Start difference. First operand 9862 states and 12450 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2025-03-03 09:50:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:26,143 INFO L93 Difference]: Finished difference Result 24609 states and 31873 transitions. [2025-03-03 09:50:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:26,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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 205 [2025-03-03 09:50:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:26,179 INFO L225 Difference]: With dead ends: 24609 [2025-03-03 09:50:26,180 INFO L226 Difference]: Without dead ends: 14749 [2025-03-03 09:50:26,192 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 [2025-03-03 09:50:26,192 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 215 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:26,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 369 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:50:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14749 states. [2025-03-03 09:50:26,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14749 to 14734. [2025-03-03 09:50:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14734 states, 14733 states have (on average 1.2111586234982692) internal successors, (17844), 14733 states have internal predecessors, (17844), 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) [2025-03-03 09:50:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14734 states to 14734 states and 17844 transitions. [2025-03-03 09:50:26,445 INFO L78 Accepts]: Start accepts. Automaton has 14734 states and 17844 transitions. Word has length 205 [2025-03-03 09:50:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:26,445 INFO L471 AbstractCegarLoop]: Abstraction has 14734 states and 17844 transitions. [2025-03-03 09:50:26,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 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) [2025-03-03 09:50:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 14734 states and 17844 transitions. [2025-03-03 09:50:26,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2025-03-03 09:50:26,450 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:26,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:50:26,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 09:50:26,450 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:26,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash 291595757, now seen corresponding path program 1 times [2025-03-03 09:50:26,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:26,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657987280] [2025-03-03 09:50:26,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:26,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:26,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 208 statements into 1 equivalence classes. [2025-03-03 09:50:26,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 208 of 208 statements. [2025-03-03 09:50:26,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:26,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:50:27,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:27,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657987280] [2025-03-03 09:50:27,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657987280] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:50:27,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867432492] [2025-03-03 09:50:27,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:27,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:50:27,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:50:27,193 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) [2025-03-03 09:50:27,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 09:50:27,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 208 statements into 1 equivalence classes. [2025-03-03 09:50:27,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 208 of 208 statements. [2025-03-03 09:50:27,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:27,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:27,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:50:27,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:50:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-03 09:50:27,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:50:27,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867432492] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:27,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:50:27,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2025-03-03 09:50:27,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742900325] [2025-03-03 09:50:27,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:27,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:27,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:27,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:27,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:50:27,468 INFO L87 Difference]: Start difference. First operand 14734 states and 17844 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2025-03-03 09:50:28,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:28,123 INFO L93 Difference]: Finished difference Result 42493 states and 51665 transitions. [2025-03-03 09:50:28,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:28,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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 208 [2025-03-03 09:50:28,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:28,180 INFO L225 Difference]: With dead ends: 42493 [2025-03-03 09:50:28,180 INFO L226 Difference]: Without dead ends: 27761 [2025-03-03 09:50:28,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:50:28,199 INFO L435 NwaCegarLoop]: 305 mSDtfsCounter, 59 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:28,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 330 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:50:28,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27761 states. [2025-03-03 09:50:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27761 to 27726. [2025-03-03 09:50:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27726 states, 27725 states have (on average 1.2000721370604148) internal successors, (33272), 27725 states have internal predecessors, (33272), 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) [2025-03-03 09:50:28,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27726 states to 27726 states and 33272 transitions. [2025-03-03 09:50:28,736 INFO L78 Accepts]: Start accepts. Automaton has 27726 states and 33272 transitions. Word has length 208 [2025-03-03 09:50:28,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:28,737 INFO L471 AbstractCegarLoop]: Abstraction has 27726 states and 33272 transitions. [2025-03-03 09:50:28,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2025-03-03 09:50:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand 27726 states and 33272 transitions. [2025-03-03 09:50:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2025-03-03 09:50:28,748 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:28,748 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:50:28,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 09:50:28,948 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,SelfDestructingSolverStorable7 [2025-03-03 09:50:28,948 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:28,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:28,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2022860036, now seen corresponding path program 1 times [2025-03-03 09:50:28,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:28,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603516982] [2025-03-03 09:50:28,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:28,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:28,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 248 statements into 1 equivalence classes. [2025-03-03 09:50:28,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 248 of 248 statements. [2025-03-03 09:50:28,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:28,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:50:29,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:29,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603516982] [2025-03-03 09:50:29,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603516982] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:29,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:29,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:50:29,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867186262] [2025-03-03 09:50:29,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:29,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:29,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:29,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:29,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:50:29,114 INFO L87 Difference]: Start difference. First operand 27726 states and 33272 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 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) [2025-03-03 09:50:29,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:29,912 INFO L93 Difference]: Finished difference Result 78422 states and 93673 transitions. [2025-03-03 09:50:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:29,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 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 248 [2025-03-03 09:50:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:30,006 INFO L225 Difference]: With dead ends: 78422 [2025-03-03 09:50:30,007 INFO L226 Difference]: Without dead ends: 50698 [2025-03-03 09:50:30,030 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 [2025-03-03 09:50:30,031 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 165 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:30,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 153 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:50:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50698 states. [2025-03-03 09:50:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50698 to 50681. [2025-03-03 09:50:30,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50681 states, 50680 states have (on average 1.1675611681136544) internal successors, (59172), 50680 states have internal predecessors, (59172), 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) [2025-03-03 09:50:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50681 states to 50681 states and 59172 transitions. [2025-03-03 09:50:30,687 INFO L78 Accepts]: Start accepts. Automaton has 50681 states and 59172 transitions. Word has length 248 [2025-03-03 09:50:30,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:30,687 INFO L471 AbstractCegarLoop]: Abstraction has 50681 states and 59172 transitions. [2025-03-03 09:50:30,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 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) [2025-03-03 09:50:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 50681 states and 59172 transitions. [2025-03-03 09:50:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2025-03-03 09:50:30,708 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:30,708 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:50:30,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 09:50:30,708 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:30,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:30,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1055286303, now seen corresponding path program 1 times [2025-03-03 09:50:30,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:30,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640264130] [2025-03-03 09:50:30,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:30,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:30,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 263 statements into 1 equivalence classes. [2025-03-03 09:50:30,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 263 of 263 statements. [2025-03-03 09:50:30,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:30,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-03 09:50:31,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640264130] [2025-03-03 09:50:31,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640264130] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:31,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:31,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:50:31,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616653391] [2025-03-03 09:50:31,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:31,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:31,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:31,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:31,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:50:31,108 INFO L87 Difference]: Start difference. First operand 50681 states and 59172 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2025-03-03 09:50:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:32,240 INFO L93 Difference]: Finished difference Result 117225 states and 137028 transitions. [2025-03-03 09:50:32,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:32,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 263 [2025-03-03 09:50:32,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:32,336 INFO L225 Difference]: With dead ends: 117225 [2025-03-03 09:50:32,336 INFO L226 Difference]: Without dead ends: 66546 [2025-03-03 09:50:32,355 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 [2025-03-03 09:50:32,355 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 136 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:32,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 371 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:50:32,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66546 states. [2025-03-03 09:50:33,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66546 to 66525. [2025-03-03 09:50:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66525 states, 66524 states have (on average 1.154681017377187) internal successors, (76814), 66524 states have internal predecessors, (76814), 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) [2025-03-03 09:50:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66525 states to 66525 states and 76814 transitions. [2025-03-03 09:50:33,360 INFO L78 Accepts]: Start accepts. Automaton has 66525 states and 76814 transitions. Word has length 263 [2025-03-03 09:50:33,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:33,361 INFO L471 AbstractCegarLoop]: Abstraction has 66525 states and 76814 transitions. [2025-03-03 09:50:33,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2025-03-03 09:50:33,362 INFO L276 IsEmpty]: Start isEmpty. Operand 66525 states and 76814 transitions. [2025-03-03 09:50:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2025-03-03 09:50:33,381 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:33,382 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 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] [2025-03-03 09:50:33,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 09:50:33,383 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:33,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:33,384 INFO L85 PathProgramCache]: Analyzing trace with hash 320984933, now seen corresponding path program 1 times [2025-03-03 09:50:33,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:33,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661881985] [2025-03-03 09:50:33,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:33,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:33,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 276 statements into 1 equivalence classes. [2025-03-03 09:50:33,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 276 of 276 statements. [2025-03-03 09:50:33,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:33,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-03 09:50:33,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:33,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661881985] [2025-03-03 09:50:33,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661881985] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:33,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:33,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:50:33,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149855438] [2025-03-03 09:50:33,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:33,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:33,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:33,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:33,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:50:33,653 INFO L87 Difference]: Start difference. First operand 66525 states and 76814 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 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) [2025-03-03 09:50:34,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:34,556 INFO L93 Difference]: Finished difference Result 168247 states and 194373 transitions. [2025-03-03 09:50:34,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:34,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 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 276 [2025-03-03 09:50:34,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:34,695 INFO L225 Difference]: With dead ends: 168247 [2025-03-03 09:50:34,696 INFO L226 Difference]: Without dead ends: 101724 [2025-03-03 09:50:34,723 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 [2025-03-03 09:50:34,724 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 205 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:34,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 69 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:50:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101724 states. [2025-03-03 09:50:35,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101724 to 101715. [2025-03-03 09:50:35,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101715 states, 101714 states have (on average 1.1532630709636824) internal successors, (117303), 101714 states have internal predecessors, (117303), 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) [2025-03-03 09:50:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101715 states to 101715 states and 117303 transitions. [2025-03-03 09:50:35,968 INFO L78 Accepts]: Start accepts. Automaton has 101715 states and 117303 transitions. Word has length 276 [2025-03-03 09:50:35,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:35,969 INFO L471 AbstractCegarLoop]: Abstraction has 101715 states and 117303 transitions. [2025-03-03 09:50:35,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 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) [2025-03-03 09:50:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 101715 states and 117303 transitions. [2025-03-03 09:50:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2025-03-03 09:50:35,994 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:35,994 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2025-03-03 09:50:35,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 09:50:35,994 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:35,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash -143378560, now seen corresponding path program 1 times [2025-03-03 09:50:35,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:35,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232550796] [2025-03-03 09:50:35,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:35,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:36,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 278 statements into 1 equivalence classes. [2025-03-03 09:50:36,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 278 of 278 statements. [2025-03-03 09:50:36,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:36,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-03 09:50:36,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:36,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232550796] [2025-03-03 09:50:36,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232550796] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:36,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:36,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:50:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880124888] [2025-03-03 09:50:36,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:36,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:36,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:36,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:50:36,138 INFO L87 Difference]: Start difference. First operand 101715 states and 117303 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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) [2025-03-03 09:50:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:37,243 INFO L93 Difference]: Finished difference Result 202628 states and 233581 transitions. [2025-03-03 09:50:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:37,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 278 [2025-03-03 09:50:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:37,406 INFO L225 Difference]: With dead ends: 202628 [2025-03-03 09:50:37,406 INFO L226 Difference]: Without dead ends: 100915 [2025-03-03 09:50:37,478 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 [2025-03-03 09:50:37,478 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 220 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:37,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 105 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 09:50:37,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100915 states. [2025-03-03 09:50:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100915 to 100903. [2025-03-03 09:50:38,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100903 states, 100902 states have (on average 1.1299478702106995) internal successors, (114014), 100902 states have internal predecessors, (114014), 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) [2025-03-03 09:50:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100903 states to 100903 states and 114014 transitions. [2025-03-03 09:50:39,093 INFO L78 Accepts]: Start accepts. Automaton has 100903 states and 114014 transitions. Word has length 278 [2025-03-03 09:50:39,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:39,093 INFO L471 AbstractCegarLoop]: Abstraction has 100903 states and 114014 transitions. [2025-03-03 09:50:39,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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) [2025-03-03 09:50:39,093 INFO L276 IsEmpty]: Start isEmpty. Operand 100903 states and 114014 transitions. [2025-03-03 09:50:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2025-03-03 09:50:39,128 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:39,129 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:50:39,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-03 09:50:39,129 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:39,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash 855777027, now seen corresponding path program 1 times [2025-03-03 09:50:39,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:39,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854072182] [2025-03-03 09:50:39,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:39,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:39,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 300 statements into 1 equivalence classes. [2025-03-03 09:50:39,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 300 of 300 statements. [2025-03-03 09:50:39,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:39,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 09:50:39,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:39,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854072182] [2025-03-03 09:50:39,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854072182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:39,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:39,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:50:39,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799403416] [2025-03-03 09:50:39,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:39,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:39,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:39,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:39,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:50:39,519 INFO L87 Difference]: Start difference. First operand 100903 states and 114014 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 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) [2025-03-03 09:50:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:40,610 INFO L93 Difference]: Finished difference Result 266712 states and 301223 transitions. [2025-03-03 09:50:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:40,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 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 300 [2025-03-03 09:50:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:40,798 INFO L225 Difference]: With dead ends: 266712 [2025-03-03 09:50:40,798 INFO L226 Difference]: Without dead ends: 165811 [2025-03-03 09:50:40,875 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 [2025-03-03 09:50:40,876 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 157 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:40,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 155 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:50:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165811 states. [2025-03-03 09:50:43,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165811 to 165796. [2025-03-03 09:50:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165796 states, 165795 states have (on average 1.1282788986398866) internal successors, (187063), 165795 states have internal predecessors, (187063), 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) [2025-03-03 09:50:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165796 states to 165796 states and 187063 transitions. [2025-03-03 09:50:43,685 INFO L78 Accepts]: Start accepts. Automaton has 165796 states and 187063 transitions. Word has length 300 [2025-03-03 09:50:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:43,686 INFO L471 AbstractCegarLoop]: Abstraction has 165796 states and 187063 transitions. [2025-03-03 09:50:43,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 2 states have internal predecessors, (246), 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) [2025-03-03 09:50:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 165796 states and 187063 transitions. [2025-03-03 09:50:43,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-03 09:50:43,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:43,720 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, 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] [2025-03-03 09:50:43,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 09:50:43,721 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:43,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1252974920, now seen corresponding path program 1 times [2025-03-03 09:50:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263331630] [2025-03-03 09:50:43,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:43,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:43,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-03 09:50:43,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-03 09:50:43,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:43,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 142 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-03 09:50:44,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:44,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263331630] [2025-03-03 09:50:44,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263331630] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:50:44,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636173855] [2025-03-03 09:50:44,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:44,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:50:44,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:50:44,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:50:44,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 09:50:44,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 307 statements into 1 equivalence classes. [2025-03-03 09:50:45,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 307 of 307 statements. [2025-03-03 09:50:45,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:45,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:45,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:50:45,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:50:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-03-03 09:50:45,116 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:50:45,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636173855] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:45,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:50:45,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2025-03-03 09:50:45,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780335536] [2025-03-03 09:50:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:45,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:45,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:45,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:45,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:50:45,117 INFO L87 Difference]: Start difference. First operand 165796 states and 187063 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 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) [2025-03-03 09:50:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:46,372 INFO L93 Difference]: Finished difference Result 331706 states and 374323 transitions. [2025-03-03 09:50:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:50:46,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 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 307 [2025-03-03 09:50:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:46,558 INFO L225 Difference]: With dead ends: 331706 [2025-03-03 09:50:46,558 INFO L226 Difference]: Without dead ends: 165912 [2025-03-03 09:50:46,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:50:46,631 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 154 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:46,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 165 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:50:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165912 states. [2025-03-03 09:50:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165912 to 164578. [2025-03-03 09:50:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164578 states, 164577 states have (on average 1.126007886885774) internal successors, (185315), 164577 states have internal predecessors, (185315), 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) [2025-03-03 09:50:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164578 states to 164578 states and 185315 transitions. [2025-03-03 09:50:48,702 INFO L78 Accepts]: Start accepts. Automaton has 164578 states and 185315 transitions. Word has length 307 [2025-03-03 09:50:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:48,702 INFO L471 AbstractCegarLoop]: Abstraction has 164578 states and 185315 transitions. [2025-03-03 09:50:48,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 2 states have internal predecessors, (248), 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) [2025-03-03 09:50:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 164578 states and 185315 transitions. [2025-03-03 09:50:48,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2025-03-03 09:50:48,749 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:48,749 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:50:48,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 09:50:48,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:50:48,950 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:48,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash 85026566, now seen corresponding path program 1 times [2025-03-03 09:50:48,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:48,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280200793] [2025-03-03 09:50:48,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:48,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:48,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-03-03 09:50:48,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-03-03 09:50:48,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:48,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:50:49,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:49,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280200793] [2025-03-03 09:50:49,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280200793] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:49,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:49,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:50:49,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683142804] [2025-03-03 09:50:49,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:49,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:50:49,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:49,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:50:49,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:50:49,406 INFO L87 Difference]: Start difference. First operand 164578 states and 185315 transitions. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 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) [2025-03-03 09:50:51,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:51,176 INFO L93 Difference]: Finished difference Result 336126 states and 378511 transitions. [2025-03-03 09:50:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:50:51,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 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 321 [2025-03-03 09:50:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:51,387 INFO L225 Difference]: With dead ends: 336126 [2025-03-03 09:50:51,387 INFO L226 Difference]: Without dead ends: 171550 [2025-03-03 09:50:51,467 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 [2025-03-03 09:50:51,467 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 422 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:51,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 82 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 09:50:51,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171550 states. [2025-03-03 09:50:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171550 to 171480. [2025-03-03 09:50:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171480 states, 171479 states have (on average 1.1025315053155196) internal successors, (189061), 171479 states have internal predecessors, (189061), 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) [2025-03-03 09:50:53,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171480 states to 171480 states and 189061 transitions. [2025-03-03 09:50:53,487 INFO L78 Accepts]: Start accepts. Automaton has 171480 states and 189061 transitions. Word has length 321 [2025-03-03 09:50:53,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:53,487 INFO L471 AbstractCegarLoop]: Abstraction has 171480 states and 189061 transitions. [2025-03-03 09:50:53,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 3 states have internal predecessors, (321), 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) [2025-03-03 09:50:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 171480 states and 189061 transitions. [2025-03-03 09:50:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2025-03-03 09:50:53,531 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:53,531 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 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, 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] [2025-03-03 09:50:53,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 09:50:53,532 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:53,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:53,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1138458864, now seen corresponding path program 1 times [2025-03-03 09:50:53,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:53,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864231303] [2025-03-03 09:50:53,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:53,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:53,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 323 statements into 1 equivalence classes. [2025-03-03 09:50:53,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 323 of 323 statements. [2025-03-03 09:50:53,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:53,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2025-03-03 09:50:54,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864231303] [2025-03-03 09:50:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864231303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:54,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:50:54,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:50:54,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827955060] [2025-03-03 09:50:54,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:54,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:50:54,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:54,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:50:54,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:50:54,117 INFO L87 Difference]: Start difference. First operand 171480 states and 189061 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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) [2025-03-03 09:50:55,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:50:55,578 INFO L93 Difference]: Finished difference Result 342952 states and 378114 transitions. [2025-03-03 09:50:55,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:50:55,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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 323 [2025-03-03 09:50:55,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:50:55,792 INFO L225 Difference]: With dead ends: 342952 [2025-03-03 09:50:55,792 INFO L226 Difference]: Without dead ends: 171474 [2025-03-03 09:50:55,877 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 [2025-03-03 09:50:55,878 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 495 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:50:55,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 54 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:50:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171474 states. [2025-03-03 09:50:57,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171474 to 171474. [2025-03-03 09:50:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171474 states, 171473 states have (on average 1.0956068885480512) internal successors, (187867), 171473 states have internal predecessors, (187867), 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) [2025-03-03 09:50:57,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171474 states to 171474 states and 187867 transitions. [2025-03-03 09:50:57,870 INFO L78 Accepts]: Start accepts. Automaton has 171474 states and 187867 transitions. Word has length 323 [2025-03-03 09:50:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:50:57,870 INFO L471 AbstractCegarLoop]: Abstraction has 171474 states and 187867 transitions. [2025-03-03 09:50:57,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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) [2025-03-03 09:50:57,870 INFO L276 IsEmpty]: Start isEmpty. Operand 171474 states and 187867 transitions. [2025-03-03 09:50:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2025-03-03 09:50:57,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:50:57,900 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:50:57,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 09:50:57,900 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:50:57,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:50:57,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1023751018, now seen corresponding path program 1 times [2025-03-03 09:50:57,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:50:57,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367864471] [2025-03-03 09:50:57,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:57,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:50:57,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 333 statements into 1 equivalence classes. [2025-03-03 09:50:57,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 333 of 333 statements. [2025-03-03 09:50:57,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:57,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-03 09:50:58,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:50:58,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367864471] [2025-03-03 09:50:58,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367864471] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:50:58,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143295756] [2025-03-03 09:50:58,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:50:58,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:50:58,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:50:58,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:50:58,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 09:50:58,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 333 statements into 1 equivalence classes. [2025-03-03 09:50:58,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 333 of 333 statements. [2025-03-03 09:50:58,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:50:58,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:50:58,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:50:58,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:50:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-03-03 09:50:58,925 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:50:58,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143295756] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:50:58,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:50:58,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-03 09:50:58,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063491928] [2025-03-03 09:50:58,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:50:58,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:50:58,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:50:58,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:50:58,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:50:58,927 INFO L87 Difference]: Start difference. First operand 171474 states and 187867 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2025-03-03 09:51:00,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:51:00,288 INFO L93 Difference]: Finished difference Result 342992 states and 375803 transitions. [2025-03-03 09:51:00,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:51:00,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 333 [2025-03-03 09:51:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:51:00,293 INFO L225 Difference]: With dead ends: 342992 [2025-03-03 09:51:00,293 INFO L226 Difference]: Without dead ends: 0 [2025-03-03 09:51:00,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:51:00,380 INFO L435 NwaCegarLoop]: 277 mSDtfsCounter, 93 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:51:00,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 284 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 09:51:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-03 09:51:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-03 09:51:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2025-03-03 09:51:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-03 09:51:00,383 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 333 [2025-03-03 09:51:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:51:00,383 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-03 09:51:00,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2025-03-03 09:51:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-03 09:51:00,384 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-03 09:51:00,386 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 09:51:00,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 09:51:00,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-03 09:51:00,589 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:51:00,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.