./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/down.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/down.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 04:42:15,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 04:42:15,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 04:42:15,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 04:42:15,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 04:42:15,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 04:42:15,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 04:42:15,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 04:42:15,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 04:42:15,292 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 04:42:15,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 04:42:15,292 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 04:42:15,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 04:42:15,293 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 04:42:15,293 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 04:42:15,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 04:42:15,294 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 04:42:15,294 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 04:42:15,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 04:42:15,294 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 04:42:15,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 04:42:15,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 04:42:15,295 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:42:15,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 04:42:15,295 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 04:42:15,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 04:42:15,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 04:42:15,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 04:42:15,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 04:42:15,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 04:42:15,296 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 -> d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 [2025-03-08 04:42:15,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 04:42:15,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 04:42:15,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 04:42:15,507 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 04:42:15,507 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 04:42:15,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/down.i [2025-03-08 04:42:16,576 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3def4bcad/3f7eeda673e3460aa18941bbf863d148/FLAGbf855208e [2025-03-08 04:42:16,793 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 04:42:16,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/down.i [2025-03-08 04:42:16,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3def4bcad/3f7eeda673e3460aa18941bbf863d148/FLAGbf855208e [2025-03-08 04:42:16,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3def4bcad/3f7eeda673e3460aa18941bbf863d148 [2025-03-08 04:42:16,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 04:42:16,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 04:42:16,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 04:42:16,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 04:42:16,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 04:42:16,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:16,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288d7102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16, skipping insertion in model container [2025-03-08 04:42:16,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:16,838 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 04:42:16,936 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/loop-invgen/down.i[893,906] [2025-03-08 04:42:16,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:42:16,953 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 04:42:16,961 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/loop-invgen/down.i[893,906] [2025-03-08 04:42:16,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:42:16,973 INFO L204 MainTranslator]: Completed translation [2025-03-08 04:42:16,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16 WrapperNode [2025-03-08 04:42:16,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 04:42:16,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 04:42:16,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 04:42:16,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 04:42:16,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:16,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:16,992 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-08 04:42:16,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 04:42:16,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 04:42:16,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 04:42:16,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 04:42:16,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:16,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:16,999 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:17,006 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 04:42:17,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:17,007 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:17,010 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:17,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:17,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:17,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:17,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 04:42:17,013 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 04:42:17,013 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 04:42:17,013 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 04:42:17,014 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (1/1) ... [2025-03-08 04:42:17,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:42:17,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:17,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 04:42:17,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 04:42:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 04:42:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 04:42:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 04:42:17,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 04:42:17,098 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 04:42:17,099 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 04:42:17,181 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-08 04:42:17,184 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 04:42:17,192 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 04:42:17,193 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 04:42:17,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:42:17 BoogieIcfgContainer [2025-03-08 04:42:17,193 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 04:42:17,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 04:42:17,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 04:42:17,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 04:42:17,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:42:16" (1/3) ... [2025-03-08 04:42:17,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7597622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:42:17, skipping insertion in model container [2025-03-08 04:42:17,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:42:16" (2/3) ... [2025-03-08 04:42:17,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7597622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:42:17, skipping insertion in model container [2025-03-08 04:42:17,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:42:17" (3/3) ... [2025-03-08 04:42:17,201 INFO L128 eAbstractionObserver]: Analyzing ICFG down.i [2025-03-08 04:42:17,213 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 04:42:17,214 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG down.i that has 1 procedures, 11 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-08 04:42:17,255 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 04:42:17,265 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;@50ffe9dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 04:42:17,266 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 04:42:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:17,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-08 04:42:17,272 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:17,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-08 04:42:17,273 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:17,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:17,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1271071678, now seen corresponding path program 1 times [2025-03-08 04:42:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:17,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586356402] [2025-03-08 04:42:17,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:17,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:17,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-08 04:42:17,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-08 04:42:17,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:17,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:17,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:17,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586356402] [2025-03-08 04:42:17,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586356402] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:42:17,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 04:42:17,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 04:42:17,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761304590] [2025-03-08 04:42:17,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:42:17,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 04:42:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:17,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 04:42:17,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 04:42:17,465 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:17,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:17,493 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2025-03-08 04:42:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 04:42:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2025-03-08 04:42:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:17,498 INFO L225 Difference]: With dead ends: 21 [2025-03-08 04:42:17,498 INFO L226 Difference]: Without dead ends: 9 [2025-03-08 04:42:17,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 04:42:17,503 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:17,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-03-08 04:42:17,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2025-03-08 04:42:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2025-03-08 04:42:17,525 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2025-03-08 04:42:17,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:17,525 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2025-03-08 04:42:17,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2025-03-08 04:42:17,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 04:42:17,527 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:17,527 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:17,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 04:42:17,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:17,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:17,528 INFO L85 PathProgramCache]: Analyzing trace with hash 749471625, now seen corresponding path program 1 times [2025-03-08 04:42:17,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:17,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140556208] [2025-03-08 04:42:17,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:17,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:17,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 04:42:17,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 04:42:17,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:17,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:17,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:17,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140556208] [2025-03-08 04:42:17,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140556208] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:17,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911279218] [2025-03-08 04:42:17,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:17,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:17,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:17,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:17,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 04:42:17,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 04:42:17,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 04:42:17,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:17,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:17,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 04:42:17,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:17,731 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 04:42:17,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911279218] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:42:17,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 04:42:17,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-08 04:42:17,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002171418] [2025-03-08 04:42:17,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:42:17,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 04:42:17,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:17,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 04:42:17,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 04:42:17,732 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:17,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:17,755 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2025-03-08 04:42:17,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 04:42:17,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2025-03-08 04:42:17,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:17,756 INFO L225 Difference]: With dead ends: 19 [2025-03-08 04:42:17,756 INFO L226 Difference]: Without dead ends: 17 [2025-03-08 04:42:17,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-08 04:42:17,757 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:17,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:17,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-03-08 04:42:17,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2025-03-08 04:42:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2025-03-08 04:42:17,759 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2025-03-08 04:42:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:17,759 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2025-03-08 04:42:17,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:17,759 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2025-03-08 04:42:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-08 04:42:17,760 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:17,760 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:17,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 04:42:17,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:17,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:17,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:17,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2024948509, now seen corresponding path program 1 times [2025-03-08 04:42:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:17,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441091739] [2025-03-08 04:42:17,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:17,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 04:42:17,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 04:42:17,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:17,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:18,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:18,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441091739] [2025-03-08 04:42:18,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441091739] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:18,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160283213] [2025-03-08 04:42:18,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:42:18,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:18,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:18,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:18,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 04:42:18,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 04:42:18,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 04:42:18,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:18,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:18,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 04:42:18,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:18,094 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:18,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160283213] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:18,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:18,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2025-03-08 04:42:18,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689824319] [2025-03-08 04:42:18,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:18,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 04:42:18,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:18,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 04:42:18,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 04:42:18,130 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:18,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:18,150 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2025-03-08 04:42:18,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 04:42:18,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 10 [2025-03-08 04:42:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:18,151 INFO L225 Difference]: With dead ends: 21 [2025-03-08 04:42:18,152 INFO L226 Difference]: Without dead ends: 12 [2025-03-08 04:42:18,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 04:42:18,152 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:18,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:18,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-03-08 04:42:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-03-08 04:42:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2025-03-08 04:42:18,154 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2025-03-08 04:42:18,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:18,154 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2025-03-08 04:42:18,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2025-03-08 04:42:18,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-08 04:42:18,155 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:18,155 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:42:18,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:18,355 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,SelfDestructingSolverStorable2 [2025-03-08 04:42:18,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:18,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash 19522350, now seen corresponding path program 2 times [2025-03-08 04:42:18,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:18,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251733201] [2025-03-08 04:42:18,356 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:18,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:18,362 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-03-08 04:42:18,366 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 04:42:18,366 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:18,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:18,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:18,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251733201] [2025-03-08 04:42:18,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251733201] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:18,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624919955] [2025-03-08 04:42:18,431 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:18,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:18,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:18,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:18,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 04:42:18,452 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-03-08 04:42:18,460 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 04:42:18,460 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:18,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:18,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 04:42:18,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:18,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:18,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624919955] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:18,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:18,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2025-03-08 04:42:18,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392747738] [2025-03-08 04:42:18,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:18,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 04:42:18,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:18,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 04:42:18,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 04:42:18,550 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:18,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:18,591 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2025-03-08 04:42:18,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 04:42:18,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 11 [2025-03-08 04:42:18,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:18,591 INFO L225 Difference]: With dead ends: 23 [2025-03-08 04:42:18,591 INFO L226 Difference]: Without dead ends: 21 [2025-03-08 04:42:18,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-03-08 04:42:18,592 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:18,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 27 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:18,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-08 04:42:18,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2025-03-08 04:42:18,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:18,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2025-03-08 04:42:18,594 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2025-03-08 04:42:18,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:18,594 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2025-03-08 04:42:18,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:18,594 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2025-03-08 04:42:18,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 04:42:18,594 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:18,594 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-08 04:42:18,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:18,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:18,795 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:18,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:18,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1770586910, now seen corresponding path program 3 times [2025-03-08 04:42:18,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:18,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543554710] [2025-03-08 04:42:18,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:18,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:18,800 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 3 equivalence classes. [2025-03-08 04:42:18,806 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 04:42:18,807 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 04:42:18,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:18,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:18,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543554710] [2025-03-08 04:42:18,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543554710] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:18,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927043234] [2025-03-08 04:42:18,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:18,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:18,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:18,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:18,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 04:42:18,914 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 3 equivalence classes. [2025-03-08 04:42:18,926 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 04:42:18,926 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 04:42:18,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:18,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 04:42:18,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:18,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:18,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:18,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927043234] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:18,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:18,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2025-03-08 04:42:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090057262] [2025-03-08 04:42:18,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:18,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 04:42:18,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:18,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 04:42:18,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 04:42:18,995 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:19,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:19,024 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2025-03-08 04:42:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 04:42:19,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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 14 [2025-03-08 04:42:19,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:19,025 INFO L225 Difference]: With dead ends: 28 [2025-03-08 04:42:19,025 INFO L226 Difference]: Without dead ends: 16 [2025-03-08 04:42:19,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 04:42:19,026 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:19,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-03-08 04:42:19,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-03-08 04:42:19,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2025-03-08 04:42:19,028 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2025-03-08 04:42:19,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:19,028 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2025-03-08 04:42:19,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2025-03-08 04:42:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-08 04:42:19,031 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:19,031 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-03-08 04:42:19,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 04:42:19,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:19,232 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:19,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1325200407, now seen corresponding path program 4 times [2025-03-08 04:42:19,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:19,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194739231] [2025-03-08 04:42:19,232 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:19,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:19,236 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-03-08 04:42:19,244 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 04:42:19,246 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:19,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:19,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:19,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194739231] [2025-03-08 04:42:19,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194739231] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:19,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079544758] [2025-03-08 04:42:19,329 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:19,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:19,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:19,331 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:19,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 04:42:19,355 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-03-08 04:42:19,365 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 04:42:19,365 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:19,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:19,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 04:42:19,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:19,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:19,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079544758] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:19,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:19,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2025-03-08 04:42:19,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310002365] [2025-03-08 04:42:19,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:19,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 04:42:19,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:19,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 04:42:19,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-08 04:42:19,448 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:19,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:19,490 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2025-03-08 04:42:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 04:42:19,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 15 [2025-03-08 04:42:19,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:19,490 INFO L225 Difference]: With dead ends: 27 [2025-03-08 04:42:19,490 INFO L226 Difference]: Without dead ends: 25 [2025-03-08 04:42:19,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-08 04:42:19,491 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:19,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-08 04:42:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2025-03-08 04:42:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2025-03-08 04:42:19,493 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2025-03-08 04:42:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:19,493 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2025-03-08 04:42:19,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2025-03-08 04:42:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 04:42:19,494 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:19,494 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2025-03-08 04:42:19,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:19,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:19,694 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:19,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:19,694 INFO L85 PathProgramCache]: Analyzing trace with hash 294902915, now seen corresponding path program 5 times [2025-03-08 04:42:19,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738897836] [2025-03-08 04:42:19,695 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:19,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:19,701 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 4 equivalence classes. [2025-03-08 04:42:19,706 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 04:42:19,707 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-08 04:42:19,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:19,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:19,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738897836] [2025-03-08 04:42:19,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738897836] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:19,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279705599] [2025-03-08 04:42:19,779 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:19,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:19,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:19,785 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:19,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 04:42:19,808 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 4 equivalence classes. [2025-03-08 04:42:19,817 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 04:42:19,817 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-08 04:42:19,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:19,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 04:42:19,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:19,847 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:19,887 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:19,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279705599] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:19,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:19,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2025-03-08 04:42:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951278034] [2025-03-08 04:42:19,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:19,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 04:42:19,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:19,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 04:42:19,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 04:42:19,888 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:19,919 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2025-03-08 04:42:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 04:42:19,919 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 18 [2025-03-08 04:42:19,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:19,919 INFO L225 Difference]: With dead ends: 35 [2025-03-08 04:42:19,919 INFO L226 Difference]: Without dead ends: 20 [2025-03-08 04:42:19,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 04:42:19,920 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:19,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-03-08 04:42:19,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-03-08 04:42:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:19,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2025-03-08 04:42:19,922 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2025-03-08 04:42:19,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:19,922 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2025-03-08 04:42:19,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:19,922 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2025-03-08 04:42:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-08 04:42:19,922 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:19,922 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1] [2025-03-08 04:42:19,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:20,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:20,127 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:20,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:20,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2013886514, now seen corresponding path program 6 times [2025-03-08 04:42:20,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:20,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54843981] [2025-03-08 04:42:20,127 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:20,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:20,131 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-03-08 04:42:20,144 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 04:42:20,144 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-08 04:42:20,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:20,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:20,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54843981] [2025-03-08 04:42:20,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54843981] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:20,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862452655] [2025-03-08 04:42:20,206 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:20,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:20,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:20,208 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:20,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 04:42:20,229 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-03-08 04:42:20,238 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 04:42:20,238 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-08 04:42:20,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:20,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 04:42:20,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:20,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:20,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862452655] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:20,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:20,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2025-03-08 04:42:20,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268184099] [2025-03-08 04:42:20,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:20,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 04:42:20,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:20,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 04:42:20,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-08 04:42:20,323 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:20,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:20,374 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2025-03-08 04:42:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 04:42:20,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 19 [2025-03-08 04:42:20,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:20,374 INFO L225 Difference]: With dead ends: 31 [2025-03-08 04:42:20,374 INFO L226 Difference]: Without dead ends: 29 [2025-03-08 04:42:20,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2025-03-08 04:42:20,375 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:20,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 23 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:20,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-08 04:42:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2025-03-08 04:42:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:20,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2025-03-08 04:42:20,377 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2025-03-08 04:42:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:20,377 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2025-03-08 04:42:20,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2025-03-08 04:42:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 04:42:20,379 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:20,379 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2025-03-08 04:42:20,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:20,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:20,584 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:20,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash 705862270, now seen corresponding path program 7 times [2025-03-08 04:42:20,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:20,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636677693] [2025-03-08 04:42:20,584 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:20,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:20,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 04:42:20,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 04:42:20,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:20,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:20,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636677693] [2025-03-08 04:42:20,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636677693] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771554733] [2025-03-08 04:42:20,681 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:20,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:20,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:20,684 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:20,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 04:42:20,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 04:42:20,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 04:42:20,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:20,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:20,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 04:42:20,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:20,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:20,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771554733] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:20,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:20,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 13 [2025-03-08 04:42:20,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553257686] [2025-03-08 04:42:20,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:20,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 04:42:20,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:20,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 04:42:20,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-03-08 04:42:20,798 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:20,827 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2025-03-08 04:42:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 04:42:20,827 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 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 22 [2025-03-08 04:42:20,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:20,827 INFO L225 Difference]: With dead ends: 42 [2025-03-08 04:42:20,827 INFO L226 Difference]: Without dead ends: 24 [2025-03-08 04:42:20,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-03-08 04:42:20,828 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:20,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-03-08 04:42:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-03-08 04:42:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2025-03-08 04:42:20,830 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2025-03-08 04:42:20,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:20,830 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2025-03-08 04:42:20,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2025-03-08 04:42:20,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-08 04:42:20,830 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:20,830 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2025-03-08 04:42:20,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:21,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-08 04:42:21,035 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:21,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:21,035 INFO L85 PathProgramCache]: Analyzing trace with hash 222865481, now seen corresponding path program 8 times [2025-03-08 04:42:21,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:21,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071800183] [2025-03-08 04:42:21,035 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:21,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:21,039 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-08 04:42:21,042 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 04:42:21,042 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:21,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:21,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071800183] [2025-03-08 04:42:21,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071800183] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683269640] [2025-03-08 04:42:21,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:21,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:21,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:21,128 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:21,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 04:42:21,152 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-08 04:42:21,162 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 04:42:21,162 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:21,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:21,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 04:42:21,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:21,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:21,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683269640] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:21,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:21,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2025-03-08 04:42:21,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146751568] [2025-03-08 04:42:21,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:21,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 04:42:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:21,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 04:42:21,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-08 04:42:21,266 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:21,325 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2025-03-08 04:42:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 04:42:21,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 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 23 [2025-03-08 04:42:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:21,325 INFO L225 Difference]: With dead ends: 35 [2025-03-08 04:42:21,325 INFO L226 Difference]: Without dead ends: 33 [2025-03-08 04:42:21,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 11 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2025-03-08 04:42:21,326 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:21,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-03-08 04:42:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2025-03-08 04:42:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2025-03-08 04:42:21,330 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2025-03-08 04:42:21,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:21,331 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2025-03-08 04:42:21,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:21,331 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2025-03-08 04:42:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-08 04:42:21,331 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:21,331 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2025-03-08 04:42:21,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:21,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 04:42:21,532 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:21,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:21,533 INFO L85 PathProgramCache]: Analyzing trace with hash -633052125, now seen corresponding path program 9 times [2025-03-08 04:42:21,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:21,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803885421] [2025-03-08 04:42:21,533 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:21,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:21,536 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 6 equivalence classes. [2025-03-08 04:42:21,542 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 04:42:21,542 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 04:42:21,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:21,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:21,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803885421] [2025-03-08 04:42:21,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803885421] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:21,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977618955] [2025-03-08 04:42:21,635 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:21,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:21,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:21,637 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:21,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 04:42:21,659 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 6 equivalence classes. [2025-03-08 04:42:21,671 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 04:42:21,671 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 04:42:21,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:21,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 04:42:21,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:21,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977618955] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:21,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:21,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2025-03-08 04:42:21,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291090540] [2025-03-08 04:42:21,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:21,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 04:42:21,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:21,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 04:42:21,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-03-08 04:42:21,772 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:21,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:21,802 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2025-03-08 04:42:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 04:42:21,802 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 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 26 [2025-03-08 04:42:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:21,803 INFO L225 Difference]: With dead ends: 49 [2025-03-08 04:42:21,803 INFO L226 Difference]: Without dead ends: 28 [2025-03-08 04:42:21,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-03-08 04:42:21,803 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:21,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-08 04:42:21,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-03-08 04:42:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2025-03-08 04:42:21,807 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2025-03-08 04:42:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:21,807 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2025-03-08 04:42:21,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:21,807 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2025-03-08 04:42:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-08 04:42:21,808 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:21,808 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2025-03-08 04:42:21,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-08 04:42:22,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 04:42:22,012 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:22,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash -187132818, now seen corresponding path program 10 times [2025-03-08 04:42:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:22,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832310680] [2025-03-08 04:42:22,012 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:22,017 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-03-08 04:42:22,025 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 04:42:22,025 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:22,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:22,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:22,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832310680] [2025-03-08 04:42:22,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832310680] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:22,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693001342] [2025-03-08 04:42:22,130 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:22,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:22,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:22,133 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:22,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 04:42:22,162 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-03-08 04:42:22,174 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 04:42:22,174 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:22,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:22,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 04:42:22,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:22,207 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:22,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693001342] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:22,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:22,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2025-03-08 04:42:22,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674719531] [2025-03-08 04:42:22,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:22,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 04:42:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:22,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 04:42:22,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-03-08 04:42:22,274 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:22,337 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2025-03-08 04:42:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 04:42:22,338 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 27 [2025-03-08 04:42:22,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:22,338 INFO L225 Difference]: With dead ends: 39 [2025-03-08 04:42:22,338 INFO L226 Difference]: Without dead ends: 37 [2025-03-08 04:42:22,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 12 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:42:22,339 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:22,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-08 04:42:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-03-08 04:42:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:22,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2025-03-08 04:42:22,342 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2025-03-08 04:42:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:22,342 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2025-03-08 04:42:22,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2025-03-08 04:42:22,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-08 04:42:22,342 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:22,342 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2025-03-08 04:42:22,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:22,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 04:42:22,547 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:22,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:22,548 INFO L85 PathProgramCache]: Analyzing trace with hash -5387810, now seen corresponding path program 11 times [2025-03-08 04:42:22,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:22,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405972836] [2025-03-08 04:42:22,548 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:22,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:22,551 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 7 equivalence classes. [2025-03-08 04:42:22,558 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 30 of 30 statements. [2025-03-08 04:42:22,558 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-03-08 04:42:22,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:22,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:22,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405972836] [2025-03-08 04:42:22,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405972836] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:22,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252491015] [2025-03-08 04:42:22,679 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:22,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:22,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:22,681 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:22,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 04:42:22,705 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 7 equivalence classes. [2025-03-08 04:42:22,718 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 30 of 30 statements. [2025-03-08 04:42:22,719 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-03-08 04:42:22,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:22,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 04:42:22,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:22,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:22,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252491015] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:22,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:22,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 16 [2025-03-08 04:42:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563717049] [2025-03-08 04:42:22,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:22,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 04:42:22,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:22,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 04:42:22,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2025-03-08 04:42:22,848 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:22,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:22,900 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2025-03-08 04:42:22,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 04:42:22,901 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 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 30 [2025-03-08 04:42:22,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:22,901 INFO L225 Difference]: With dead ends: 56 [2025-03-08 04:42:22,901 INFO L226 Difference]: Without dead ends: 32 [2025-03-08 04:42:22,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2025-03-08 04:42:22,902 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:22,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-03-08 04:42:22,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-03-08 04:42:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2025-03-08 04:42:22,904 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2025-03-08 04:42:22,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:22,904 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2025-03-08 04:42:22,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2025-03-08 04:42:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-08 04:42:22,904 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:22,904 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1] [2025-03-08 04:42:22,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-08 04:42:23,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 04:42:23,106 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:23,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:23,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1489689769, now seen corresponding path program 12 times [2025-03-08 04:42:23,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:23,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395316792] [2025-03-08 04:42:23,107 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:23,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:23,110 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 7 equivalence classes. [2025-03-08 04:42:23,120 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 04:42:23,120 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-08 04:42:23,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395316792] [2025-03-08 04:42:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395316792] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041797682] [2025-03-08 04:42:23,218 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:23,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:23,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:23,220 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:23,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 04:42:23,245 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 7 equivalence classes. [2025-03-08 04:42:23,258 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 04:42:23,258 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-08 04:42:23,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:23,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:42:23,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:23,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:23,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041797682] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:23,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:23,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2025-03-08 04:42:23,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210079491] [2025-03-08 04:42:23,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:23,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 04:42:23,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:23,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 04:42:23,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2025-03-08 04:42:23,373 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:23,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:23,442 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2025-03-08 04:42:23,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 04:42:23,442 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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 31 [2025-03-08 04:42:23,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:23,443 INFO L225 Difference]: With dead ends: 43 [2025-03-08 04:42:23,443 INFO L226 Difference]: Without dead ends: 41 [2025-03-08 04:42:23,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 14 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2025-03-08 04:42:23,444 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:23,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:23,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-03-08 04:42:23,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2025-03-08 04:42:23,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2025-03-08 04:42:23,446 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2025-03-08 04:42:23,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:23,446 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2025-03-08 04:42:23,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:23,446 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2025-03-08 04:42:23,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-08 04:42:23,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:23,447 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2025-03-08 04:42:23,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:23,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 04:42:23,648 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:23,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash -548318269, now seen corresponding path program 13 times [2025-03-08 04:42:23,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:23,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575418239] [2025-03-08 04:42:23,648 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:23,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:23,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-08 04:42:23,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-08 04:42:23,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:23,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:23,800 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:23,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:23,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575418239] [2025-03-08 04:42:23,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575418239] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:23,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646907127] [2025-03-08 04:42:23,800 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:23,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:23,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:23,802 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:23,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 04:42:23,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-08 04:42:23,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-08 04:42:23,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:23,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:23,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-08 04:42:23,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:23,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:23,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646907127] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:23,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:23,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 19 [2025-03-08 04:42:23,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622895389] [2025-03-08 04:42:23,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:23,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 04:42:23,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:23,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 04:42:23,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2025-03-08 04:42:23,986 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:24,034 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2025-03-08 04:42:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 04:42:24,035 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 34 [2025-03-08 04:42:24,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:24,035 INFO L225 Difference]: With dead ends: 63 [2025-03-08 04:42:24,035 INFO L226 Difference]: Without dead ends: 36 [2025-03-08 04:42:24,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 15 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2025-03-08 04:42:24,036 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:24,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-08 04:42:24,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-03-08 04:42:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2025-03-08 04:42:24,038 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 34 [2025-03-08 04:42:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:24,038 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2025-03-08 04:42:24,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2025-03-08 04:42:24,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-08 04:42:24,038 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:24,038 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1] [2025-03-08 04:42:24,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:24,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:24,239 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:24,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1791101198, now seen corresponding path program 14 times [2025-03-08 04:42:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:24,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915165037] [2025-03-08 04:42:24,239 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:24,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:24,244 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-08 04:42:24,248 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-08 04:42:24,248 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:24,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 28 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:24,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915165037] [2025-03-08 04:42:24,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915165037] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239676119] [2025-03-08 04:42:24,365 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:24,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:24,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:24,368 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:24,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-08 04:42:24,394 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-08 04:42:24,406 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-08 04:42:24,406 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:24,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:24,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 04:42:24,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:24,463 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:24,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:24,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239676119] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:24,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:24,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2025-03-08 04:42:24,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26154915] [2025-03-08 04:42:24,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:24,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 04:42:24,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:24,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 04:42:24,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2025-03-08 04:42:24,565 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:24,644 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2025-03-08 04:42:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 04:42:24,644 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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 35 [2025-03-08 04:42:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:24,645 INFO L225 Difference]: With dead ends: 47 [2025-03-08 04:42:24,645 INFO L226 Difference]: Without dead ends: 45 [2025-03-08 04:42:24,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 17 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2025-03-08 04:42:24,646 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:24,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:24,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-08 04:42:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2025-03-08 04:42:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:24,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2025-03-08 04:42:24,648 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2025-03-08 04:42:24,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:24,648 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2025-03-08 04:42:24,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:24,649 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2025-03-08 04:42:24,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 04:42:24,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:24,649 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1] [2025-03-08 04:42:24,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:24,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 04:42:24,850 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:24,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:24,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1977052866, now seen corresponding path program 15 times [2025-03-08 04:42:24,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:24,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225373001] [2025-03-08 04:42:24,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:24,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:24,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 9 equivalence classes. [2025-03-08 04:42:24,861 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 04:42:24,863 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-03-08 04:42:24,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:25,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:25,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225373001] [2025-03-08 04:42:25,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225373001] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:25,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681381880] [2025-03-08 04:42:25,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:25,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:25,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:25,018 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:25,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-08 04:42:25,045 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 9 equivalence classes. [2025-03-08 04:42:25,061 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 04:42:25,061 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-03-08 04:42:25,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:25,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 04:42:25,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:25,118 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:25,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681381880] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:25,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:25,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 21 [2025-03-08 04:42:25,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561078142] [2025-03-08 04:42:25,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:25,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-08 04:42:25,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:25,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-08 04:42:25,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2025-03-08 04:42:25,242 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:25,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:25,293 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2025-03-08 04:42:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 04:42:25,294 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 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 38 [2025-03-08 04:42:25,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:25,294 INFO L225 Difference]: With dead ends: 70 [2025-03-08 04:42:25,294 INFO L226 Difference]: Without dead ends: 40 [2025-03-08 04:42:25,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 17 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2025-03-08 04:42:25,295 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:25,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:25,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-03-08 04:42:25,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-03-08 04:42:25,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2025-03-08 04:42:25,297 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2025-03-08 04:42:25,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:25,297 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2025-03-08 04:42:25,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:25,297 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2025-03-08 04:42:25,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-08 04:42:25,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:25,299 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1] [2025-03-08 04:42:25,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:25,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-08 04:42:25,504 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:25,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:25,504 INFO L85 PathProgramCache]: Analyzing trace with hash -665343735, now seen corresponding path program 16 times [2025-03-08 04:42:25,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:25,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944606871] [2025-03-08 04:42:25,505 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:25,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:25,509 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-03-08 04:42:25,517 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 04:42:25,519 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:25,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:25,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:25,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944606871] [2025-03-08 04:42:25,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944606871] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:25,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325813932] [2025-03-08 04:42:25,636 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:25,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:25,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:25,638 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:25,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-08 04:42:25,666 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-03-08 04:42:25,680 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 04:42:25,681 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:25,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:25,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:42:25,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:25,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:25,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325813932] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:25,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:25,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2025-03-08 04:42:25,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935708948] [2025-03-08 04:42:25,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:25,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 04:42:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:25,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 04:42:25,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-08 04:42:25,855 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:25,937 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2025-03-08 04:42:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 04:42:25,937 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 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 39 [2025-03-08 04:42:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:25,938 INFO L225 Difference]: With dead ends: 51 [2025-03-08 04:42:25,938 INFO L226 Difference]: Without dead ends: 49 [2025-03-08 04:42:25,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 67 SyntacticMatches, 18 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2025-03-08 04:42:25,938 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:25,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:25,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-03-08 04:42:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2025-03-08 04:42:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2025-03-08 04:42:25,944 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 39 [2025-03-08 04:42:25,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:25,944 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2025-03-08 04:42:25,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:25,944 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2025-03-08 04:42:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-08 04:42:25,944 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:25,944 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1] [2025-03-08 04:42:25,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:26,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-08 04:42:26,146 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:26,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash 19704675, now seen corresponding path program 17 times [2025-03-08 04:42:26,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:26,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724053016] [2025-03-08 04:42:26,147 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:26,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:26,151 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 10 equivalence classes. [2025-03-08 04:42:26,160 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 04:42:26,160 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-08 04:42:26,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:26,345 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:26,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:26,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724053016] [2025-03-08 04:42:26,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724053016] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:26,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083304006] [2025-03-08 04:42:26,346 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:26,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:26,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:26,348 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:26,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-08 04:42:26,377 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 10 equivalence classes. [2025-03-08 04:42:26,394 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 04:42:26,394 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-08 04:42:26,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:26,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 04:42:26,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:26,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:26,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083304006] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:26,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:26,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 22 [2025-03-08 04:42:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189415384] [2025-03-08 04:42:26,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:26,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-08 04:42:26,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:26,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-08 04:42:26,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2025-03-08 04:42:26,589 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:26,643 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2025-03-08 04:42:26,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-08 04:42:26,643 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 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 42 [2025-03-08 04:42:26,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:26,644 INFO L225 Difference]: With dead ends: 77 [2025-03-08 04:42:26,644 INFO L226 Difference]: Without dead ends: 44 [2025-03-08 04:42:26,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 65 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2025-03-08 04:42:26,645 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:26,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-03-08 04:42:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-03-08 04:42:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2025-03-08 04:42:26,647 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2025-03-08 04:42:26,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:26,647 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2025-03-08 04:42:26,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2025-03-08 04:42:26,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-08 04:42:26,648 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:26,648 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1] [2025-03-08 04:42:26,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-08 04:42:26,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:26,849 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:26,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash -282794578, now seen corresponding path program 18 times [2025-03-08 04:42:26,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:26,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444927674] [2025-03-08 04:42:26,849 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:26,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:26,853 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 10 equivalence classes. [2025-03-08 04:42:26,868 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 43 of 43 statements. [2025-03-08 04:42:26,869 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-03-08 04:42:26,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 45 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:27,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:27,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444927674] [2025-03-08 04:42:27,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444927674] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:27,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684158659] [2025-03-08 04:42:27,025 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:27,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:27,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:27,027 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:27,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-08 04:42:27,060 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 10 equivalence classes. [2025-03-08 04:42:27,077 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 43 of 43 statements. [2025-03-08 04:42:27,077 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-03-08 04:42:27,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:27,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:42:27,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:27,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684158659] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:27,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:27,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2025-03-08 04:42:27,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380024711] [2025-03-08 04:42:27,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:27,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 04:42:27,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:27,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 04:42:27,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2025-03-08 04:42:27,253 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:27,362 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2025-03-08 04:42:27,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 04:42:27,362 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 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 43 [2025-03-08 04:42:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:27,362 INFO L225 Difference]: With dead ends: 55 [2025-03-08 04:42:27,363 INFO L226 Difference]: Without dead ends: 53 [2025-03-08 04:42:27,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 73 SyntacticMatches, 20 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2025-03-08 04:42:27,363 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:27,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 37 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:27,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-03-08 04:42:27,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2025-03-08 04:42:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2025-03-08 04:42:27,368 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 43 [2025-03-08 04:42:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:27,368 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2025-03-08 04:42:27,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2025-03-08 04:42:27,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-08 04:42:27,370 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:27,370 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2025-03-08 04:42:27,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:27,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:27,571 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:27,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:27,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1993404574, now seen corresponding path program 19 times [2025-03-08 04:42:27,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:27,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56731434] [2025-03-08 04:42:27,571 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:27,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:27,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-08 04:42:27,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-08 04:42:27,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:27,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:27,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56731434] [2025-03-08 04:42:27,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56731434] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:27,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349791633] [2025-03-08 04:42:27,794 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:27,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:27,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:27,796 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:27,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-08 04:42:27,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-08 04:42:27,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-08 04:42:27,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:27,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:27,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 04:42:27,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:27,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:28,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349791633] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:28,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:28,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 25 [2025-03-08 04:42:28,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672374586] [2025-03-08 04:42:28,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:28,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 04:42:28,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:28,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 04:42:28,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2025-03-08 04:42:28,052 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:28,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:28,128 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2025-03-08 04:42:28,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 04:42:28,132 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 46 [2025-03-08 04:42:28,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:28,132 INFO L225 Difference]: With dead ends: 84 [2025-03-08 04:42:28,132 INFO L226 Difference]: Without dead ends: 48 [2025-03-08 04:42:28,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 70 SyntacticMatches, 21 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2025-03-08 04:42:28,133 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:28,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:28,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-03-08 04:42:28,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-03-08 04:42:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2025-03-08 04:42:28,136 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2025-03-08 04:42:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:28,136 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2025-03-08 04:42:28,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2025-03-08 04:42:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-08 04:42:28,136 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:28,136 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2025-03-08 04:42:28,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:28,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-08 04:42:28,341 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:28,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash -566424215, now seen corresponding path program 20 times [2025-03-08 04:42:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:28,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012640919] [2025-03-08 04:42:28,341 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:28,346 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-03-08 04:42:28,354 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 04:42:28,354 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:28,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 55 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:28,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:28,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012640919] [2025-03-08 04:42:28,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012640919] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:28,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378133303] [2025-03-08 04:42:28,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:28,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:28,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:28,511 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:28,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-08 04:42:28,545 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-03-08 04:42:28,563 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-03-08 04:42:28,563 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:28,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:28,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-08 04:42:28,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:28,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:28,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378133303] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:28,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:28,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2025-03-08 04:42:28,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541459711] [2025-03-08 04:42:28,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:28,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 04:42:28,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:28,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 04:42:28,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:42:28,771 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:28,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:28,876 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2025-03-08 04:42:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 04:42:28,879 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 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 47 [2025-03-08 04:42:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:28,880 INFO L225 Difference]: With dead ends: 59 [2025-03-08 04:42:28,880 INFO L226 Difference]: Without dead ends: 57 [2025-03-08 04:42:28,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 79 SyntacticMatches, 23 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2025-03-08 04:42:28,881 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:28,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:28,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-03-08 04:42:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2025-03-08 04:42:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2025-03-08 04:42:28,888 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2025-03-08 04:42:28,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:28,888 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2025-03-08 04:42:28,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:28,888 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2025-03-08 04:42:28,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-08 04:42:28,888 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:28,888 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1] [2025-03-08 04:42:28,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:29,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-08 04:42:29,089 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:29,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash 583559939, now seen corresponding path program 21 times [2025-03-08 04:42:29,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:29,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533815327] [2025-03-08 04:42:29,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:29,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:29,093 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 12 equivalence classes. [2025-03-08 04:42:29,121 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 04:42:29,121 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-03-08 04:42:29,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:29,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:29,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533815327] [2025-03-08 04:42:29,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533815327] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:29,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690800970] [2025-03-08 04:42:29,335 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:29,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:29,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:29,337 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:29,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-08 04:42:29,372 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 12 equivalence classes. [2025-03-08 04:42:29,393 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 04:42:29,393 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-03-08 04:42:29,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:29,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 04:42:29,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:29,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:29,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690800970] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:29,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:29,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 27 [2025-03-08 04:42:29,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983507939] [2025-03-08 04:42:29,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:29,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-08 04:42:29,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:29,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-08 04:42:29,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2025-03-08 04:42:29,636 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:29,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:29,700 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2025-03-08 04:42:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 04:42:29,700 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 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 50 [2025-03-08 04:42:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:29,701 INFO L225 Difference]: With dead ends: 91 [2025-03-08 04:42:29,701 INFO L226 Difference]: Without dead ends: 52 [2025-03-08 04:42:29,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 76 SyntacticMatches, 23 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2025-03-08 04:42:29,701 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:29,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:29,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-03-08 04:42:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-03-08 04:42:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2025-03-08 04:42:29,707 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2025-03-08 04:42:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:29,708 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2025-03-08 04:42:29,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 27 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2025-03-08 04:42:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-08 04:42:29,708 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:29,708 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1] [2025-03-08 04:42:29,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:29,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:29,909 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:29,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1980552626, now seen corresponding path program 22 times [2025-03-08 04:42:29,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:29,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22341152] [2025-03-08 04:42:29,909 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:29,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:29,915 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-03-08 04:42:29,922 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-03-08 04:42:29,922 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:29,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22341152] [2025-03-08 04:42:30,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22341152] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306028574] [2025-03-08 04:42:30,091 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:30,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:30,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:30,093 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:30,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-08 04:42:30,129 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-03-08 04:42:30,146 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-03-08 04:42:30,146 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:30,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:30,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:42:30,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:30,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:30,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306028574] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:30,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:30,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 17 [2025-03-08 04:42:30,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970451327] [2025-03-08 04:42:30,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:30,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 04:42:30,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:30,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 04:42:30,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:42:30,363 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:30,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:30,462 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2025-03-08 04:42:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 04:42:30,463 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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 51 [2025-03-08 04:42:30,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:30,463 INFO L225 Difference]: With dead ends: 63 [2025-03-08 04:42:30,463 INFO L226 Difference]: Without dead ends: 61 [2025-03-08 04:42:30,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 88 SyntacticMatches, 24 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=498, Unknown=0, NotChecked=0, Total=812 [2025-03-08 04:42:30,464 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:30,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-03-08 04:42:30,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2025-03-08 04:42:30,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:30,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2025-03-08 04:42:30,466 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 51 [2025-03-08 04:42:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:30,466 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2025-03-08 04:42:30,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:30,466 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2025-03-08 04:42:30,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-08 04:42:30,466 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:30,466 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1] [2025-03-08 04:42:30,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-08 04:42:30,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:30,667 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:30,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1618274302, now seen corresponding path program 23 times [2025-03-08 04:42:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:30,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432736412] [2025-03-08 04:42:30,667 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:30,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:30,671 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 13 equivalence classes. [2025-03-08 04:42:30,683 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 54 of 54 statements. [2025-03-08 04:42:30,683 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-03-08 04:42:30,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:30,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432736412] [2025-03-08 04:42:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432736412] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967491429] [2025-03-08 04:42:30,916 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:30,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:30,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:30,918 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:30,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-08 04:42:30,949 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 13 equivalence classes. [2025-03-08 04:42:30,968 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 54 of 54 statements. [2025-03-08 04:42:30,968 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-03-08 04:42:30,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:30,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 04:42:30,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:31,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:31,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967491429] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:31,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:31,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 28 [2025-03-08 04:42:31,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516456103] [2025-03-08 04:42:31,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:31,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-08 04:42:31,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:31,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-08 04:42:31,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2025-03-08 04:42:31,209 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:31,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:31,294 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2025-03-08 04:42:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-08 04:42:31,294 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 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 54 [2025-03-08 04:42:31,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:31,295 INFO L225 Difference]: With dead ends: 98 [2025-03-08 04:42:31,295 INFO L226 Difference]: Without dead ends: 56 [2025-03-08 04:42:31,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 83 SyntacticMatches, 25 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2025-03-08 04:42:31,295 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:31,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:31,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-08 04:42:31,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-03-08 04:42:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2025-03-08 04:42:31,298 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2025-03-08 04:42:31,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:31,298 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2025-03-08 04:42:31,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2025-03-08 04:42:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-08 04:42:31,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:31,299 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1] [2025-03-08 04:42:31,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-08 04:42:31,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-08 04:42:31,500 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:31,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1438053943, now seen corresponding path program 24 times [2025-03-08 04:42:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:31,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625346882] [2025-03-08 04:42:31,500 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:31,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:31,504 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 13 equivalence classes. [2025-03-08 04:42:31,512 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 55 of 55 statements. [2025-03-08 04:42:31,512 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-08 04:42:31,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 78 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625346882] [2025-03-08 04:42:31,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625346882] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380416049] [2025-03-08 04:42:31,672 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:31,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:31,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:31,674 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:31,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-08 04:42:31,708 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 13 equivalence classes. [2025-03-08 04:42:31,727 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 55 of 55 statements. [2025-03-08 04:42:31,727 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-08 04:42:31,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:31,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 04:42:31,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:31,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380416049] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:31,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:31,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2025-03-08 04:42:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495929160] [2025-03-08 04:42:31,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:31,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 04:42:31,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:31,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 04:42:31,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2025-03-08 04:42:31,933 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:32,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:32,063 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2025-03-08 04:42:32,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-08 04:42:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 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 55 [2025-03-08 04:42:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:32,068 INFO L225 Difference]: With dead ends: 67 [2025-03-08 04:42:32,068 INFO L226 Difference]: Without dead ends: 65 [2025-03-08 04:42:32,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 94 SyntacticMatches, 26 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:42:32,069 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:32,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:32,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-03-08 04:42:32,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2025-03-08 04:42:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:32,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2025-03-08 04:42:32,073 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 55 [2025-03-08 04:42:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:32,073 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2025-03-08 04:42:32,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2025-03-08 04:42:32,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-08 04:42:32,074 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:32,074 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1] [2025-03-08 04:42:32,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-08 04:42:32,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-08 04:42:32,275 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:32,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1234604707, now seen corresponding path program 25 times [2025-03-08 04:42:32,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:32,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463702596] [2025-03-08 04:42:32,276 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:32,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-08 04:42:32,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-08 04:42:32,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:32,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:32,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:32,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463702596] [2025-03-08 04:42:32,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463702596] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:32,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335614771] [2025-03-08 04:42:32,581 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:32,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:32,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:32,583 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:32,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-08 04:42:32,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-08 04:42:32,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-08 04:42:32,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:32,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:32,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 04:42:32,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:32,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:32,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335614771] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:32,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:32,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 31 [2025-03-08 04:42:32,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526686539] [2025-03-08 04:42:32,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:32,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-08 04:42:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:32,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-08 04:42:32,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2025-03-08 04:42:32,908 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:32,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:32,975 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2025-03-08 04:42:32,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-08 04:42:32,975 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 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 58 [2025-03-08 04:42:32,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:32,975 INFO L225 Difference]: With dead ends: 105 [2025-03-08 04:42:32,975 INFO L226 Difference]: Without dead ends: 60 [2025-03-08 04:42:32,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 88 SyntacticMatches, 27 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2025-03-08 04:42:32,976 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:32,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-08 04:42:32,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-03-08 04:42:32,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2025-03-08 04:42:32,979 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 58 [2025-03-08 04:42:32,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:32,979 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2025-03-08 04:42:32,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.935483870967742) internal successors, (60), 31 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2025-03-08 04:42:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-08 04:42:32,979 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:32,979 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1] [2025-03-08 04:42:32,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:33,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-08 04:42:33,184 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:33,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:33,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1704908526, now seen corresponding path program 26 times [2025-03-08 04:42:33,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:33,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188986190] [2025-03-08 04:42:33,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:33,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:33,189 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-03-08 04:42:33,193 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-03-08 04:42:33,193 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:33,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 91 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:33,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:33,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188986190] [2025-03-08 04:42:33,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188986190] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:33,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221595913] [2025-03-08 04:42:33,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:33,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:33,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:33,377 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:33,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-08 04:42:33,413 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-03-08 04:42:33,432 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-03-08 04:42:33,433 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:33,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:33,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-08 04:42:33,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:33,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:33,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221595913] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:33,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:33,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2025-03-08 04:42:33,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567399833] [2025-03-08 04:42:33,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:33,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-08 04:42:33,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:33,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-08 04:42:33,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2025-03-08 04:42:33,668 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:33,789 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2025-03-08 04:42:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-08 04:42:33,792 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 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 59 [2025-03-08 04:42:33,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:33,792 INFO L225 Difference]: With dead ends: 71 [2025-03-08 04:42:33,792 INFO L226 Difference]: Without dead ends: 69 [2025-03-08 04:42:33,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 100 SyntacticMatches, 29 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 04:42:33,793 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:33,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 31 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-03-08 04:42:33,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2025-03-08 04:42:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:33,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2025-03-08 04:42:33,796 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 59 [2025-03-08 04:42:33,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:33,796 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2025-03-08 04:42:33,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2025-03-08 04:42:33,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-08 04:42:33,796 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:33,796 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1] [2025-03-08 04:42:33,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:33,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-08 04:42:33,997 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:33,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1352501410, now seen corresponding path program 27 times [2025-03-08 04:42:33,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:33,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834973695] [2025-03-08 04:42:33,997 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:33,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:34,001 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 15 equivalence classes. [2025-03-08 04:42:34,010 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 04:42:34,010 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-03-08 04:42:34,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:34,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834973695] [2025-03-08 04:42:34,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834973695] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348309187] [2025-03-08 04:42:34,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:34,353 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:34,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-08 04:42:34,389 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 15 equivalence classes. [2025-03-08 04:42:34,413 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 04:42:34,414 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-03-08 04:42:34,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:34,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 04:42:34,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:34,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:34,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348309187] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:34,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:34,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 33 [2025-03-08 04:42:34,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147070645] [2025-03-08 04:42:34,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:34,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-08 04:42:34,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:34,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-08 04:42:34,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:42:34,713 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:34,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:34,819 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2025-03-08 04:42:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-08 04:42:34,819 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 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 62 [2025-03-08 04:42:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:34,820 INFO L225 Difference]: With dead ends: 112 [2025-03-08 04:42:34,820 INFO L226 Difference]: Without dead ends: 64 [2025-03-08 04:42:34,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 94 SyntacticMatches, 29 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:42:34,821 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:34,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:34,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-03-08 04:42:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2025-03-08 04:42:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2025-03-08 04:42:34,823 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2025-03-08 04:42:34,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:34,827 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2025-03-08 04:42:34,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:34,827 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2025-03-08 04:42:34,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-08 04:42:34,828 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:34,828 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1] [2025-03-08 04:42:34,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-08 04:42:35,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-08 04:42:35,029 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:35,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:35,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1237949993, now seen corresponding path program 28 times [2025-03-08 04:42:35,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:35,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457480794] [2025-03-08 04:42:35,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:35,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:35,034 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 63 statements into 2 equivalence classes. [2025-03-08 04:42:35,046 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-03-08 04:42:35,046 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:35,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:35,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:35,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457480794] [2025-03-08 04:42:35,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457480794] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:35,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769272503] [2025-03-08 04:42:35,249 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:35,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:35,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:35,251 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:35,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-08 04:42:35,291 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 63 statements into 2 equivalence classes. [2025-03-08 04:42:35,309 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-03-08 04:42:35,309 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:35,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:35,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-08 04:42:35,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:35,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:35,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769272503] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:35,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:35,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2025-03-08 04:42:35,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587375413] [2025-03-08 04:42:35,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:35,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-08 04:42:35,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:35,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-08 04:42:35,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2025-03-08 04:42:35,593 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:35,730 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2025-03-08 04:42:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-08 04:42:35,730 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 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 63 [2025-03-08 04:42:35,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:35,731 INFO L225 Difference]: With dead ends: 75 [2025-03-08 04:42:35,731 INFO L226 Difference]: Without dead ends: 73 [2025-03-08 04:42:35,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 109 SyntacticMatches, 30 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=458, Invalid=732, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 04:42:35,732 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:35,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-03-08 04:42:35,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2025-03-08 04:42:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2025-03-08 04:42:35,736 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 63 [2025-03-08 04:42:35,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:35,736 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2025-03-08 04:42:35,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:35,736 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2025-03-08 04:42:35,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 04:42:35,736 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:35,736 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2025-03-08 04:42:35,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-08 04:42:35,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:35,937 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:35,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1115086269, now seen corresponding path program 29 times [2025-03-08 04:42:35,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:35,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480093757] [2025-03-08 04:42:35,937 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:35,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:35,942 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 66 statements into 16 equivalence classes. [2025-03-08 04:42:35,951 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 04:42:35,951 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-03-08 04:42:35,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:36,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:36,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480093757] [2025-03-08 04:42:36,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480093757] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:36,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610797408] [2025-03-08 04:42:36,353 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:36,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:36,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:36,357 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:36,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-08 04:42:36,401 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 66 statements into 16 equivalence classes. [2025-03-08 04:42:36,425 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 04:42:36,425 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-03-08 04:42:36,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:36,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-08 04:42:36,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:36,478 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:36,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610797408] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:36,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:36,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 34 [2025-03-08 04:42:36,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799678913] [2025-03-08 04:42:36,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:36,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-08 04:42:36,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:36,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-08 04:42:36,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 04:42:36,776 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:36,854 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2025-03-08 04:42:36,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-08 04:42:36,854 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 34 states have internal predecessors, (66), 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 66 [2025-03-08 04:42:36,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:36,855 INFO L225 Difference]: With dead ends: 119 [2025-03-08 04:42:36,855 INFO L226 Difference]: Without dead ends: 68 [2025-03-08 04:42:36,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 101 SyntacticMatches, 31 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 04:42:36,855 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:36,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:36,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-03-08 04:42:36,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-03-08 04:42:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:36,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2025-03-08 04:42:36,858 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 66 [2025-03-08 04:42:36,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:36,858 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2025-03-08 04:42:36,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9411764705882353) internal successors, (66), 34 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:36,858 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2025-03-08 04:42:36,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 04:42:36,859 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:36,859 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1] [2025-03-08 04:42:36,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:37,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-03-08 04:42:37,059 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:37,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash -283513970, now seen corresponding path program 30 times [2025-03-08 04:42:37,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:37,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680517946] [2025-03-08 04:42:37,060 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:37,064 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 67 statements into 16 equivalence classes. [2025-03-08 04:42:37,073 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 04:42:37,073 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-03-08 04:42:37,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 120 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:37,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680517946] [2025-03-08 04:42:37,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680517946] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219825566] [2025-03-08 04:42:37,306 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:37,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:37,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:37,308 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:37,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-08 04:42:37,357 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 67 statements into 16 equivalence classes. [2025-03-08 04:42:37,387 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 04:42:37,387 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-03-08 04:42:37,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:37,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-08 04:42:37,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:37,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:37,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219825566] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:37,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:37,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 22 [2025-03-08 04:42:37,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212185275] [2025-03-08 04:42:37,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:37,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-08 04:42:37,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:37,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-08 04:42:37,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2025-03-08 04:42:37,664 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:37,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:37,794 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2025-03-08 04:42:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-08 04:42:37,794 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 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 67 [2025-03-08 04:42:37,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:37,795 INFO L225 Difference]: With dead ends: 79 [2025-03-08 04:42:37,795 INFO L226 Difference]: Without dead ends: 77 [2025-03-08 04:42:37,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 115 SyntacticMatches, 32 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 04:42:37,796 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:37,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 23 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:42:37,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-03-08 04:42:37,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2025-03-08 04:42:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2025-03-08 04:42:37,800 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 67 [2025-03-08 04:42:37,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:37,800 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2025-03-08 04:42:37,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:37,801 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2025-03-08 04:42:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 04:42:37,801 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:37,801 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 1, 1, 1, 1, 1] [2025-03-08 04:42:37,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:38,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:38,005 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:38,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:38,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2036833982, now seen corresponding path program 31 times [2025-03-08 04:42:38,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:38,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842592666] [2025-03-08 04:42:38,005 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:38,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:38,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 04:42:38,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 04:42:38,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:38,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:38,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:38,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842592666] [2025-03-08 04:42:38,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842592666] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:38,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856078942] [2025-03-08 04:42:38,452 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:38,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:38,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:38,455 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:38,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-08 04:42:38,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 04:42:38,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 04:42:38,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:38,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:38,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-08 04:42:38,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:38,582 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:38,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:38,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856078942] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:38,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:38,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 37 [2025-03-08 04:42:38,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026815922] [2025-03-08 04:42:38,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:38,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 04:42:38,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:38,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 04:42:38,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:42:38,873 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 37 states, 37 states have (on average 1.945945945945946) internal successors, (72), 37 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:38,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:38,969 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2025-03-08 04:42:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-08 04:42:38,969 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.945945945945946) internal successors, (72), 37 states have internal predecessors, (72), 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 70 [2025-03-08 04:42:38,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:38,970 INFO L225 Difference]: With dead ends: 126 [2025-03-08 04:42:38,970 INFO L226 Difference]: Without dead ends: 72 [2025-03-08 04:42:38,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 106 SyntacticMatches, 33 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:42:38,970 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:38,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:38,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-03-08 04:42:38,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-03-08 04:42:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2025-03-08 04:42:38,973 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 70 [2025-03-08 04:42:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:38,974 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2025-03-08 04:42:38,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.945945945945946) internal successors, (72), 37 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2025-03-08 04:42:38,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-08 04:42:38,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:38,974 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1] [2025-03-08 04:42:38,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-08 04:42:39,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:39,175 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:39,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:39,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2005715593, now seen corresponding path program 32 times [2025-03-08 04:42:39,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:39,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788413775] [2025-03-08 04:42:39,175 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:39,179 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-03-08 04:42:39,184 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-03-08 04:42:39,185 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:39,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 136 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:39,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788413775] [2025-03-08 04:42:39,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788413775] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754327225] [2025-03-08 04:42:39,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:39,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:39,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:39,448 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:39,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-08 04:42:39,489 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-03-08 04:42:39,508 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-03-08 04:42:39,508 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:39,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:39,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-08 04:42:39,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:39,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:39,807 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:39,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754327225] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:39,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:39,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2025-03-08 04:42:39,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753832837] [2025-03-08 04:42:39,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:39,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 04:42:39,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:39,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 04:42:39,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2025-03-08 04:42:39,808 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:39,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:39,954 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2025-03-08 04:42:39,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-08 04:42:39,954 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 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 71 [2025-03-08 04:42:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:39,955 INFO L225 Difference]: With dead ends: 83 [2025-03-08 04:42:39,955 INFO L226 Difference]: Without dead ends: 81 [2025-03-08 04:42:39,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 35 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2025-03-08 04:42:39,955 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:39,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 33 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-03-08 04:42:39,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2025-03-08 04:42:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2025-03-08 04:42:39,959 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 71 [2025-03-08 04:42:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:39,959 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2025-03-08 04:42:39,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2025-03-08 04:42:39,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-08 04:42:39,959 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:39,959 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 1, 1, 1, 1, 1] [2025-03-08 04:42:39,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-08 04:42:40,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-03-08 04:42:40,160 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:40,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:40,160 INFO L85 PathProgramCache]: Analyzing trace with hash 689052131, now seen corresponding path program 33 times [2025-03-08 04:42:40,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:40,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325851096] [2025-03-08 04:42:40,160 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:40,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:40,166 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 74 statements into 18 equivalence classes. [2025-03-08 04:42:40,175 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 74 of 74 statements. [2025-03-08 04:42:40,176 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-03-08 04:42:40,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:40,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325851096] [2025-03-08 04:42:40,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325851096] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774732068] [2025-03-08 04:42:40,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:40,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:40,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:40,550 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:40,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-08 04:42:40,594 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 74 statements into 18 equivalence classes. [2025-03-08 04:42:40,622 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 74 of 74 statements. [2025-03-08 04:42:40,622 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-03-08 04:42:40,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:40,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-08 04:42:40,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:40,679 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:40,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:40,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774732068] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:40,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:40,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 39 [2025-03-08 04:42:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656955762] [2025-03-08 04:42:40,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:40,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-03-08 04:42:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:40,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-03-08 04:42:40,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2025-03-08 04:42:40,991 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 39 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 39 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:41,096 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2025-03-08 04:42:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-08 04:42:41,096 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 39 states have internal predecessors, (76), 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 74 [2025-03-08 04:42:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:41,097 INFO L225 Difference]: With dead ends: 133 [2025-03-08 04:42:41,097 INFO L226 Difference]: Without dead ends: 76 [2025-03-08 04:42:41,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 112 SyntacticMatches, 35 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1049 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2025-03-08 04:42:41,097 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:41,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:41,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-03-08 04:42:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2025-03-08 04:42:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2025-03-08 04:42:41,101 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2025-03-08 04:42:41,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:41,101 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2025-03-08 04:42:41,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 39 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2025-03-08 04:42:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-08 04:42:41,101 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:41,101 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1] [2025-03-08 04:42:41,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-08 04:42:41,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-08 04:42:41,302 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:41,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash -170498002, now seen corresponding path program 34 times [2025-03-08 04:42:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:41,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676262193] [2025-03-08 04:42:41,302 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:41,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:41,307 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 75 statements into 2 equivalence classes. [2025-03-08 04:42:41,313 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-03-08 04:42:41,313 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:41,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:41,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:41,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676262193] [2025-03-08 04:42:41,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676262193] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:41,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809280293] [2025-03-08 04:42:41,548 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:41,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:41,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:41,550 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:41,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-08 04:42:41,599 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 75 statements into 2 equivalence classes. [2025-03-08 04:42:41,622 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-03-08 04:42:41,622 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:41,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:41,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-08 04:42:41,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:41,683 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:41,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809280293] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:41,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:41,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 23 [2025-03-08 04:42:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434766614] [2025-03-08 04:42:41,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:41,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 04:42:41,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:41,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 04:42:41,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=291, Unknown=0, NotChecked=0, Total=506 [2025-03-08 04:42:41,941 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:42,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:42,084 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2025-03-08 04:42:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-08 04:42:42,084 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 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 75 [2025-03-08 04:42:42,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:42,085 INFO L225 Difference]: With dead ends: 87 [2025-03-08 04:42:42,085 INFO L226 Difference]: Without dead ends: 85 [2025-03-08 04:42:42,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 130 SyntacticMatches, 36 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=629, Invalid=1011, Unknown=0, NotChecked=0, Total=1640 [2025-03-08 04:42:42,086 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:42,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-03-08 04:42:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2025-03-08 04:42:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2025-03-08 04:42:42,089 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 75 [2025-03-08 04:42:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:42,089 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2025-03-08 04:42:42,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2025-03-08 04:42:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-08 04:42:42,090 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:42,090 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 1, 1, 1, 1, 1] [2025-03-08 04:42:42,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-08 04:42:42,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-08 04:42:42,290 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:42,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:42,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1641176606, now seen corresponding path program 35 times [2025-03-08 04:42:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:42,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879789572] [2025-03-08 04:42:42,291 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:42,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:42,299 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 78 statements into 19 equivalence classes. [2025-03-08 04:42:42,309 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) and asserted 78 of 78 statements. [2025-03-08 04:42:42,310 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2025-03-08 04:42:42,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:42,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:42,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879789572] [2025-03-08 04:42:42,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879789572] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:42,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291963959] [2025-03-08 04:42:42,777 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:42,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:42,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:42,779 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:42,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-08 04:42:42,825 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 78 statements into 19 equivalence classes. [2025-03-08 04:42:42,852 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) and asserted 78 of 78 statements. [2025-03-08 04:42:42,852 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2025-03-08 04:42:42,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:42,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-08 04:42:42,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:42,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:43,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291963959] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:43,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:43,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 40 [2025-03-08 04:42:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268210396] [2025-03-08 04:42:43,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:43,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-08 04:42:43,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:43,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-08 04:42:43,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2025-03-08 04:42:43,234 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 40 states, 40 states have (on average 1.95) internal successors, (78), 40 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:43,373 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2025-03-08 04:42:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-03-08 04:42:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.95) internal successors, (78), 40 states have internal predecessors, (78), 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 78 [2025-03-08 04:42:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:43,374 INFO L225 Difference]: With dead ends: 140 [2025-03-08 04:42:43,374 INFO L226 Difference]: Without dead ends: 80 [2025-03-08 04:42:43,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 119 SyntacticMatches, 37 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2025-03-08 04:42:43,374 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:43,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 253 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:43,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-08 04:42:43,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2025-03-08 04:42:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2025-03-08 04:42:43,380 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 78 [2025-03-08 04:42:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:43,380 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2025-03-08 04:42:43,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.95) internal successors, (78), 40 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2025-03-08 04:42:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 04:42:43,380 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:43,380 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1] [2025-03-08 04:42:43,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-03-08 04:42:43,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:43,581 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:43,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:43,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2078314217, now seen corresponding path program 36 times [2025-03-08 04:42:43,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:43,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098543031] [2025-03-08 04:42:43,581 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:43,589 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 79 statements into 19 equivalence classes. [2025-03-08 04:42:43,607 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 04:42:43,607 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-03-08 04:42:43,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 171 proven. 514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:43,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:43,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098543031] [2025-03-08 04:42:43,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098543031] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:43,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162320132] [2025-03-08 04:42:43,909 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:43,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:43,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:43,911 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:43,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-08 04:42:43,964 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 79 statements into 19 equivalence classes. [2025-03-08 04:42:43,999 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 04:42:43,999 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-03-08 04:42:43,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:44,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-08 04:42:44,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:44,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:44,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162320132] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:44,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:44,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 25 [2025-03-08 04:42:44,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660093128] [2025-03-08 04:42:44,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:44,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 04:42:44,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:44,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 04:42:44,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2025-03-08 04:42:44,334 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 25 states, 25 states have (on average 3.32) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:44,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:44,519 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2025-03-08 04:42:44,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-03-08 04:42:44,520 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 25 states have internal predecessors, (83), 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 79 [2025-03-08 04:42:44,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:44,520 INFO L225 Difference]: With dead ends: 91 [2025-03-08 04:42:44,520 INFO L226 Difference]: Without dead ends: 89 [2025-03-08 04:42:44,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 136 SyntacticMatches, 38 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2025-03-08 04:42:44,521 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:44,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-03-08 04:42:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2025-03-08 04:42:44,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2025-03-08 04:42:44,525 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 79 [2025-03-08 04:42:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:44,525 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2025-03-08 04:42:44,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2025-03-08 04:42:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-08 04:42:44,526 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:44,526 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 1, 1, 1, 1, 1] [2025-03-08 04:42:44,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:44,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-08 04:42:44,730 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:44,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:44,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1188857469, now seen corresponding path program 37 times [2025-03-08 04:42:44,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:44,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033983975] [2025-03-08 04:42:44,730 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:44,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:44,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-08 04:42:44,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-08 04:42:44,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:44,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:45,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033983975] [2025-03-08 04:42:45,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033983975] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921422611] [2025-03-08 04:42:45,229 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:45,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:45,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:45,231 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:45,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-08 04:42:45,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-08 04:42:45,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-08 04:42:45,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:45,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:45,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-08 04:42:45,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:45,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:45,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921422611] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:45,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:45,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2025-03-08 04:42:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448306760] [2025-03-08 04:42:45,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:45,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-08 04:42:45,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:45,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-08 04:42:45,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:42:45,733 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 43 states, 43 states have (on average 1.9534883720930232) internal successors, (84), 43 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:45,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:45,853 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2025-03-08 04:42:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-03-08 04:42:45,853 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9534883720930232) internal successors, (84), 43 states have internal predecessors, (84), 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 82 [2025-03-08 04:42:45,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:45,854 INFO L225 Difference]: With dead ends: 147 [2025-03-08 04:42:45,854 INFO L226 Difference]: Without dead ends: 84 [2025-03-08 04:42:45,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 124 SyntacticMatches, 39 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 04:42:45,855 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:45,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-03-08 04:42:45,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2025-03-08 04:42:45,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2025-03-08 04:42:45,859 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2025-03-08 04:42:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:45,859 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2025-03-08 04:42:45,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.9534883720930232) internal successors, (84), 43 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:45,859 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2025-03-08 04:42:45,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-08 04:42:45,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:45,860 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1] [2025-03-08 04:42:45,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:46,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-08 04:42:46,060 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:46,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash -876196658, now seen corresponding path program 38 times [2025-03-08 04:42:46,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:46,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122934905] [2025-03-08 04:42:46,061 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:46,068 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 83 statements into 2 equivalence classes. [2025-03-08 04:42:46,074 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 04:42:46,074 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:46,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 190 proven. 571 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:46,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:46,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122934905] [2025-03-08 04:42:46,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122934905] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:46,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545553664] [2025-03-08 04:42:46,382 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:46,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:46,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:46,384 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:46,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-03-08 04:42:46,435 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 83 statements into 2 equivalence classes. [2025-03-08 04:42:46,457 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 04:42:46,457 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:46,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:46,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-08 04:42:46,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:46,524 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:46,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545553664] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:46,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:46,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 26 [2025-03-08 04:42:46,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88729204] [2025-03-08 04:42:46,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:46,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-08 04:42:46,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:46,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-08 04:42:46,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2025-03-08 04:42:46,843 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:47,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:47,022 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2025-03-08 04:42:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-08 04:42:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 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 83 [2025-03-08 04:42:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:47,022 INFO L225 Difference]: With dead ends: 95 [2025-03-08 04:42:47,023 INFO L226 Difference]: Without dead ends: 93 [2025-03-08 04:42:47,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 142 SyntacticMatches, 41 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2025-03-08 04:42:47,023 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:47,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-03-08 04:42:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2025-03-08 04:42:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2025-03-08 04:42:47,027 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 83 [2025-03-08 04:42:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:47,027 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2025-03-08 04:42:47,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2025-03-08 04:42:47,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-08 04:42:47,028 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:47,028 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 1, 1, 1, 1, 1] [2025-03-08 04:42:47,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-03-08 04:42:47,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-08 04:42:47,228 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:47,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:47,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2037429630, now seen corresponding path program 39 times [2025-03-08 04:42:47,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:47,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610185617] [2025-03-08 04:42:47,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:47,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:47,236 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 86 statements into 21 equivalence classes. [2025-03-08 04:42:47,252 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) and asserted 86 of 86 statements. [2025-03-08 04:42:47,252 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2025-03-08 04:42:47,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:47,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:47,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610185617] [2025-03-08 04:42:47,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610185617] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:47,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834831142] [2025-03-08 04:42:47,770 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:47,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:47,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:47,771 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:47,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-03-08 04:42:47,828 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 86 statements into 21 equivalence classes. [2025-03-08 04:42:47,862 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) and asserted 86 of 86 statements. [2025-03-08 04:42:47,862 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2025-03-08 04:42:47,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:47,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-08 04:42:47,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:47,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:48,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834831142] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:48,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:48,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2025-03-08 04:42:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972095707] [2025-03-08 04:42:48,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:48,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-08 04:42:48,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:48,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-08 04:42:48,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2025-03-08 04:42:48,399 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:48,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:48,530 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2025-03-08 04:42:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-08 04:42:48,530 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 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 86 [2025-03-08 04:42:48,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:48,531 INFO L225 Difference]: With dead ends: 154 [2025-03-08 04:42:48,531 INFO L226 Difference]: Without dead ends: 88 [2025-03-08 04:42:48,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 130 SyntacticMatches, 41 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2025-03-08 04:42:48,532 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:48,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:48,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-03-08 04:42:48,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-03-08 04:42:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2025-03-08 04:42:48,536 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2025-03-08 04:42:48,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:48,536 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2025-03-08 04:42:48,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:48,536 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2025-03-08 04:42:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-08 04:42:48,537 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:48,537 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1] [2025-03-08 04:42:48,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:48,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-03-08 04:42:48,737 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:48,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:48,738 INFO L85 PathProgramCache]: Analyzing trace with hash 210955081, now seen corresponding path program 40 times [2025-03-08 04:42:48,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:48,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37436463] [2025-03-08 04:42:48,738 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:48,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:48,743 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 87 statements into 2 equivalence classes. [2025-03-08 04:42:48,751 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-08 04:42:48,751 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:48,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:49,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:49,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37436463] [2025-03-08 04:42:49,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37436463] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:49,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654710769] [2025-03-08 04:42:49,101 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:49,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:49,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:49,103 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:49,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-03-08 04:42:49,156 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 87 statements into 2 equivalence classes. [2025-03-08 04:42:49,180 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-08 04:42:49,180 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:49,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:49,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-08 04:42:49,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:49,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:49,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654710769] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:49,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:49,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2025-03-08 04:42:49,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258904009] [2025-03-08 04:42:49,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:49,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-08 04:42:49,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:49,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-08 04:42:49,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2025-03-08 04:42:49,571 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:49,751 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2025-03-08 04:42:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-03-08 04:42:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 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 87 [2025-03-08 04:42:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:49,753 INFO L225 Difference]: With dead ends: 99 [2025-03-08 04:42:49,753 INFO L226 Difference]: Without dead ends: 97 [2025-03-08 04:42:49,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 151 SyntacticMatches, 42 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=827, Invalid=1335, Unknown=0, NotChecked=0, Total=2162 [2025-03-08 04:42:49,754 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:49,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 27 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-03-08 04:42:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2025-03-08 04:42:49,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2025-03-08 04:42:49,759 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 87 [2025-03-08 04:42:49,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:49,759 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2025-03-08 04:42:49,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2025-03-08 04:42:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-08 04:42:49,759 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:49,759 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1, 1, 1] [2025-03-08 04:42:49,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:49,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:49,960 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:49,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:49,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1026507043, now seen corresponding path program 41 times [2025-03-08 04:42:49,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:49,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215263813] [2025-03-08 04:42:49,960 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:49,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:49,965 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 90 statements into 22 equivalence classes. [2025-03-08 04:42:49,976 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) and asserted 90 of 90 statements. [2025-03-08 04:42:49,977 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2025-03-08 04:42:49,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:50,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:50,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215263813] [2025-03-08 04:42:50,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215263813] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:50,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645922896] [2025-03-08 04:42:50,653 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:50,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:50,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:50,655 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:50,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-03-08 04:42:50,714 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 90 statements into 22 equivalence classes. [2025-03-08 04:42:50,750 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) and asserted 90 of 90 statements. [2025-03-08 04:42:50,750 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2025-03-08 04:42:50,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:50,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-08 04:42:50,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:50,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:51,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645922896] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:51,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:51,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 46 [2025-03-08 04:42:51,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480738171] [2025-03-08 04:42:51,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:51,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-08 04:42:51,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:51,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-08 04:42:51,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2025-03-08 04:42:51,242 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:51,359 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2025-03-08 04:42:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-08 04:42:51,359 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 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 90 [2025-03-08 04:42:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:51,360 INFO L225 Difference]: With dead ends: 161 [2025-03-08 04:42:51,360 INFO L226 Difference]: Without dead ends: 92 [2025-03-08 04:42:51,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 137 SyntacticMatches, 43 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2025-03-08 04:42:51,361 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:51,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:51,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-03-08 04:42:51,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2025-03-08 04:42:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2025-03-08 04:42:51,364 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 90 [2025-03-08 04:42:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:51,365 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2025-03-08 04:42:51,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 46 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2025-03-08 04:42:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-08 04:42:51,365 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:51,365 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1] [2025-03-08 04:42:51,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:51,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:51,565 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:51,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1700501870, now seen corresponding path program 42 times [2025-03-08 04:42:51,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:51,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077340941] [2025-03-08 04:42:51,566 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:51,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:51,571 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 91 statements into 22 equivalence classes. [2025-03-08 04:42:51,586 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 91 of 91 statements. [2025-03-08 04:42:51,586 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-03-08 04:42:51,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 231 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:52,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:52,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077340941] [2025-03-08 04:42:52,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077340941] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:52,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755504976] [2025-03-08 04:42:52,003 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:42:52,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:52,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:52,005 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:52,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-03-08 04:42:52,066 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 91 statements into 22 equivalence classes. [2025-03-08 04:42:52,102 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 91 of 91 statements. [2025-03-08 04:42:52,102 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-03-08 04:42:52,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:52,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-03-08 04:42:52,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:52,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:52,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755504976] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:52,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:52,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 28 [2025-03-08 04:42:52,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625851692] [2025-03-08 04:42:52,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:52,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-08 04:42:52,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:52,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-08 04:42:52,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2025-03-08 04:42:52,560 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:52,769 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2025-03-08 04:42:52,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-08 04:42:52,770 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 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 91 [2025-03-08 04:42:52,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:52,770 INFO L225 Difference]: With dead ends: 103 [2025-03-08 04:42:52,770 INFO L226 Difference]: Without dead ends: 101 [2025-03-08 04:42:52,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 157 SyntacticMatches, 44 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2025-03-08 04:42:52,771 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:52,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:52,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-03-08 04:42:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2025-03-08 04:42:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2025-03-08 04:42:52,776 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 91 [2025-03-08 04:42:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:52,776 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2025-03-08 04:42:52,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2025-03-08 04:42:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 04:42:52,776 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:52,776 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2025-03-08 04:42:52,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:52,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-03-08 04:42:52,977 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:52,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash 512795870, now seen corresponding path program 43 times [2025-03-08 04:42:52,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:52,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273485693] [2025-03-08 04:42:52,978 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:52,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:52,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 04:42:52,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 04:42:52,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:52,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:53,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:53,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273485693] [2025-03-08 04:42:53,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273485693] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:53,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416181720] [2025-03-08 04:42:53,575 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:42:53,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:53,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:53,576 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:53,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-03-08 04:42:53,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 04:42:53,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 04:42:53,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:42:53,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:53,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-08 04:42:53,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:53,741 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:54,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416181720] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:54,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:54,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 49 [2025-03-08 04:42:54,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897161329] [2025-03-08 04:42:54,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:54,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-08 04:42:54,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:54,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-08 04:42:54,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 04:42:54,211 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 49 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:54,330 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2025-03-08 04:42:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-08 04:42:54,331 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 49 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-03-08 04:42:54,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:54,331 INFO L225 Difference]: With dead ends: 168 [2025-03-08 04:42:54,331 INFO L226 Difference]: Without dead ends: 96 [2025-03-08 04:42:54,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 142 SyntacticMatches, 45 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 04:42:54,332 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:54,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-03-08 04:42:54,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-03-08 04:42:54,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2025-03-08 04:42:54,336 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 94 [2025-03-08 04:42:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:54,336 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2025-03-08 04:42:54,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9591836734693877) internal successors, (96), 49 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2025-03-08 04:42:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 04:42:54,337 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:54,337 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1] [2025-03-08 04:42:54,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2025-03-08 04:42:54,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-03-08 04:42:54,537 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:54,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash 754048937, now seen corresponding path program 44 times [2025-03-08 04:42:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996346531] [2025-03-08 04:42:54,538 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:54,543 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-08 04:42:54,554 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 04:42:54,554 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:54,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 253 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:54,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:54,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996346531] [2025-03-08 04:42:54,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996346531] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:54,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674225490] [2025-03-08 04:42:54,947 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:42:54,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:54,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:54,949 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:54,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-03-08 04:42:55,008 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-08 04:42:55,034 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 04:42:55,034 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:42:55,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:55,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-08 04:42:55,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:55,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:55,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674225490] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:55,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:55,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 29 [2025-03-08 04:42:55,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542665004] [2025-03-08 04:42:55,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:55,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-08 04:42:55,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:55,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-08 04:42:55,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2025-03-08 04:42:55,474 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:55,687 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2025-03-08 04:42:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-03-08 04:42:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 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 95 [2025-03-08 04:42:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:55,688 INFO L225 Difference]: With dead ends: 107 [2025-03-08 04:42:55,688 INFO L226 Difference]: Without dead ends: 105 [2025-03-08 04:42:55,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 163 SyntacticMatches, 47 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2025-03-08 04:42:55,688 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:55,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-08 04:42:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2025-03-08 04:42:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2025-03-08 04:42:55,692 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 95 [2025-03-08 04:42:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:55,692 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2025-03-08 04:42:55,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2025-03-08 04:42:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 04:42:55,693 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:55,693 INFO L218 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 1, 1, 1, 1, 1] [2025-03-08 04:42:55,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2025-03-08 04:42:55,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-03-08 04:42:55,893 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:55,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1193767107, now seen corresponding path program 45 times [2025-03-08 04:42:55,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:55,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976250625] [2025-03-08 04:42:55,894 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:55,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:55,899 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 98 statements into 24 equivalence classes. [2025-03-08 04:42:55,919 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 04:42:55,919 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2025-03-08 04:42:55,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:56,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:56,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976250625] [2025-03-08 04:42:56,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976250625] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:56,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994367918] [2025-03-08 04:42:56,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:42:56,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:56,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:56,590 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:56,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-03-08 04:42:56,653 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 98 statements into 24 equivalence classes. [2025-03-08 04:42:56,690 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 04:42:56,690 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2025-03-08 04:42:56,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:56,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-03-08 04:42:56,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:56,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:57,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994367918] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:57,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:57,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 51 [2025-03-08 04:42:57,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880217890] [2025-03-08 04:42:57,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:57,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-03-08 04:42:57,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:57,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-03-08 04:42:57,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2025-03-08 04:42:57,265 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:57,389 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2025-03-08 04:42:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-03-08 04:42:57,390 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 51 states have internal predecessors, (100), 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 98 [2025-03-08 04:42:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:57,390 INFO L225 Difference]: With dead ends: 175 [2025-03-08 04:42:57,390 INFO L226 Difference]: Without dead ends: 100 [2025-03-08 04:42:57,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 148 SyntacticMatches, 47 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1835 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=675, Invalid=1875, Unknown=0, NotChecked=0, Total=2550 [2025-03-08 04:42:57,391 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:57,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:57,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-03-08 04:42:57,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2025-03-08 04:42:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2025-03-08 04:42:57,396 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2025-03-08 04:42:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:57,396 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2025-03-08 04:42:57,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 51 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2025-03-08 04:42:57,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-08 04:42:57,397 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:57,397 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1] [2025-03-08 04:42:57,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2025-03-08 04:42:57,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:57,597 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:57,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:57,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2038976014, now seen corresponding path program 46 times [2025-03-08 04:42:57,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:57,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140116828] [2025-03-08 04:42:57,598 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:57,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:57,603 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 99 statements into 2 equivalence classes. [2025-03-08 04:42:57,612 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 04:42:57,612 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:57,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:57,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:57,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140116828] [2025-03-08 04:42:57,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140116828] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:57,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543921098] [2025-03-08 04:42:57,997 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:42:57,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:57,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:57,999 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:58,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-03-08 04:42:58,061 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 99 statements into 2 equivalence classes. [2025-03-08 04:42:58,089 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 99 of 99 statements. [2025-03-08 04:42:58,089 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:42:58,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:58,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-03-08 04:42:58,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:58,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:42:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:58,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543921098] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:42:58,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:42:58,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 29 [2025-03-08 04:42:58,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021562616] [2025-03-08 04:42:58,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:42:58,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-08 04:42:58,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:42:58,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-08 04:42:58,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2025-03-08 04:42:58,562 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 29 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 29 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:42:58,767 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2025-03-08 04:42:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-03-08 04:42:58,767 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 29 states have internal predecessors, (101), 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 99 [2025-03-08 04:42:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:42:58,768 INFO L225 Difference]: With dead ends: 111 [2025-03-08 04:42:58,768 INFO L226 Difference]: Without dead ends: 109 [2025-03-08 04:42:58,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 172 SyntacticMatches, 48 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1052, Invalid=1704, Unknown=0, NotChecked=0, Total=2756 [2025-03-08 04:42:58,768 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:42:58,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:42:58,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-03-08 04:42:58,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2025-03-08 04:42:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2025-03-08 04:42:58,773 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 99 [2025-03-08 04:42:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:42:58,773 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2025-03-08 04:42:58,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 29 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:42:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2025-03-08 04:42:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-03-08 04:42:58,774 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:42:58,774 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 1, 1, 1, 1, 1] [2025-03-08 04:42:58,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2025-03-08 04:42:58,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-03-08 04:42:58,974 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:42:58,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:42:58,974 INFO L85 PathProgramCache]: Analyzing trace with hash -587191234, now seen corresponding path program 47 times [2025-03-08 04:42:58,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:42:58,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640921262] [2025-03-08 04:42:58,975 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:58,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:42:58,980 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 102 statements into 25 equivalence classes. [2025-03-08 04:42:58,993 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) and asserted 102 of 102 statements. [2025-03-08 04:42:58,993 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2025-03-08 04:42:58,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:59,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:59,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:42:59,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640921262] [2025-03-08 04:42:59,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640921262] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:42:59,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675666231] [2025-03-08 04:42:59,696 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:42:59,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:42:59,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:42:59,697 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:42:59,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-03-08 04:42:59,763 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 102 statements into 25 equivalence classes. [2025-03-08 04:42:59,802 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) and asserted 102 of 102 statements. [2025-03-08 04:42:59,802 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2025-03-08 04:42:59,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:42:59,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-03-08 04:42:59,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:42:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:42:59,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:00,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675666231] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:00,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:00,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 52 [2025-03-08 04:43:00,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768041544] [2025-03-08 04:43:00,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:00,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-03-08 04:43:00,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:00,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-03-08 04:43:00,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2025-03-08 04:43:00,402 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 52 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:00,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:00,604 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2025-03-08 04:43:00,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-08 04:43:00,605 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 52 states have internal predecessors, (102), 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 102 [2025-03-08 04:43:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:00,605 INFO L225 Difference]: With dead ends: 182 [2025-03-08 04:43:00,605 INFO L226 Difference]: Without dead ends: 104 [2025-03-08 04:43:00,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 155 SyntacticMatches, 49 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1776 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2025-03-08 04:43:00,606 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:00,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 274 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 04:43:00,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-08 04:43:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2025-03-08 04:43:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2025-03-08 04:43:00,615 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 102 [2025-03-08 04:43:00,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:00,615 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2025-03-08 04:43:00,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.9615384615384615) internal successors, (102), 52 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:00,616 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2025-03-08 04:43:00,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-08 04:43:00,616 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:00,616 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1] [2025-03-08 04:43:00,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2025-03-08 04:43:00,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-03-08 04:43:00,817 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:00,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:00,817 INFO L85 PathProgramCache]: Analyzing trace with hash 231435273, now seen corresponding path program 48 times [2025-03-08 04:43:00,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:00,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91277928] [2025-03-08 04:43:00,817 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:00,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:00,823 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 25 equivalence classes. [2025-03-08 04:43:00,835 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) and asserted 103 of 103 statements. [2025-03-08 04:43:00,835 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2025-03-08 04:43:00,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:01,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 300 proven. 901 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:01,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:01,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91277928] [2025-03-08 04:43:01,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91277928] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:01,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398776725] [2025-03-08 04:43:01,251 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:01,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:01,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:01,252 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:01,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-03-08 04:43:01,318 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 25 equivalence classes. [2025-03-08 04:43:01,358 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) and asserted 103 of 103 statements. [2025-03-08 04:43:01,358 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2025-03-08 04:43:01,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:01,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-03-08 04:43:01,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:01,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:01,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398776725] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:01,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:01,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 31 [2025-03-08 04:43:01,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631028433] [2025-03-08 04:43:01,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:01,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-08 04:43:01,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:01,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-08 04:43:01,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2025-03-08 04:43:01,872 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 31 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:02,142 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2025-03-08 04:43:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-03-08 04:43:02,142 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 31 states have internal predecessors, (107), 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 103 [2025-03-08 04:43:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:02,143 INFO L225 Difference]: With dead ends: 115 [2025-03-08 04:43:02,143 INFO L226 Difference]: Without dead ends: 113 [2025-03-08 04:43:02,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 178 SyntacticMatches, 50 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1136, Invalid=1944, Unknown=0, NotChecked=0, Total=3080 [2025-03-08 04:43:02,144 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:02,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:02,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-03-08 04:43:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2025-03-08 04:43:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2025-03-08 04:43:02,150 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 103 [2025-03-08 04:43:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:02,150 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2025-03-08 04:43:02,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 31 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2025-03-08 04:43:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-08 04:43:02,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:02,150 INFO L218 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 1, 1, 1, 1, 1] [2025-03-08 04:43:02,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2025-03-08 04:43:02,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-03-08 04:43:02,351 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:02,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1266550883, now seen corresponding path program 49 times [2025-03-08 04:43:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:02,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875598640] [2025-03-08 04:43:02,351 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:02,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:02,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-08 04:43:02,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-08 04:43:02,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:02,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:03,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:03,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875598640] [2025-03-08 04:43:03,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875598640] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:03,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246320762] [2025-03-08 04:43:03,149 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:03,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:03,151 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:03,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-03-08 04:43:03,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-08 04:43:03,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-08 04:43:03,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:03,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:03,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-03-08 04:43:03,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:03,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:03,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246320762] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:03,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:03,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 55 [2025-03-08 04:43:03,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942031913] [2025-03-08 04:43:03,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:03,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-03-08 04:43:03,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:03,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-03-08 04:43:03,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2025-03-08 04:43:03,964 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 55 states, 55 states have (on average 1.9636363636363636) internal successors, (108), 55 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:04,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:04,157 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2025-03-08 04:43:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-03-08 04:43:04,158 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.9636363636363636) internal successors, (108), 55 states have internal predecessors, (108), 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 106 [2025-03-08 04:43:04,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:04,158 INFO L225 Difference]: With dead ends: 189 [2025-03-08 04:43:04,158 INFO L226 Difference]: Without dead ends: 108 [2025-03-08 04:43:04,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 160 SyntacticMatches, 51 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=783, Invalid=2187, Unknown=0, NotChecked=0, Total=2970 [2025-03-08 04:43:04,159 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:04,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 247 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 04:43:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-03-08 04:43:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-03-08 04:43:04,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:04,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2025-03-08 04:43:04,166 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 106 [2025-03-08 04:43:04,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:04,166 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2025-03-08 04:43:04,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.9636363636363636) internal successors, (108), 55 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2025-03-08 04:43:04,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-08 04:43:04,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:04,167 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1] [2025-03-08 04:43:04,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:04,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2025-03-08 04:43:04,368 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:04,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1581356370, now seen corresponding path program 50 times [2025-03-08 04:43:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107883277] [2025-03-08 04:43:04,368 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:04,374 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-03-08 04:43:04,382 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-03-08 04:43:04,382 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:04,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 325 proven. 976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:04,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:04,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107883277] [2025-03-08 04:43:04,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107883277] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:04,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659132529] [2025-03-08 04:43:04,817 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:04,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:04,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:04,819 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:04,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2025-03-08 04:43:04,891 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-03-08 04:43:04,919 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-03-08 04:43:04,919 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:04,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:04,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-03-08 04:43:04,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:05,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:05,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659132529] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:05,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:05,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 32 [2025-03-08 04:43:05,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622174868] [2025-03-08 04:43:05,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:05,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 04:43:05,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:05,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 04:43:05,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:05,478 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:05,779 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2025-03-08 04:43:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-03-08 04:43:05,779 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 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 107 [2025-03-08 04:43:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:05,780 INFO L225 Difference]: With dead ends: 119 [2025-03-08 04:43:05,780 INFO L226 Difference]: Without dead ends: 117 [2025-03-08 04:43:05,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 184 SyntacticMatches, 53 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2025-03-08 04:43:05,781 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:05,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 35 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:05,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-08 04:43:05,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2025-03-08 04:43:05,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2025-03-08 04:43:05,787 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 107 [2025-03-08 04:43:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:05,787 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2025-03-08 04:43:05,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:05,787 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2025-03-08 04:43:05,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-08 04:43:05,788 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:05,788 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 1, 1, 1, 1, 1] [2025-03-08 04:43:05,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2025-03-08 04:43:05,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:05,988 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:05,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:05,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1309494174, now seen corresponding path program 51 times [2025-03-08 04:43:05,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:05,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350186873] [2025-03-08 04:43:05,989 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:05,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:05,995 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 110 statements into 27 equivalence classes. [2025-03-08 04:43:06,006 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 110 of 110 statements. [2025-03-08 04:43:06,006 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-03-08 04:43:06,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:06,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:06,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350186873] [2025-03-08 04:43:06,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350186873] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:06,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533730948] [2025-03-08 04:43:06,799 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:06,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:06,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:06,801 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:06,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2025-03-08 04:43:06,871 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 110 statements into 27 equivalence classes. [2025-03-08 04:43:06,917 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 110 of 110 statements. [2025-03-08 04:43:06,917 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-03-08 04:43:06,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:06,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-03-08 04:43:06,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:07,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:07,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533730948] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:07,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:07,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 57 [2025-03-08 04:43:07,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028966240] [2025-03-08 04:43:07,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:07,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-03-08 04:43:07,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:07,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-03-08 04:43:07,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2025-03-08 04:43:07,634 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 57 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 57 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:07,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:07,764 INFO L93 Difference]: Finished difference Result 196 states and 198 transitions. [2025-03-08 04:43:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-03-08 04:43:07,765 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 57 states have internal predecessors, (112), 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 110 [2025-03-08 04:43:07,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:07,765 INFO L225 Difference]: With dead ends: 196 [2025-03-08 04:43:07,765 INFO L226 Difference]: Without dead ends: 112 [2025-03-08 04:43:07,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 166 SyntacticMatches, 53 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2309 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=840, Invalid=2352, Unknown=0, NotChecked=0, Total=3192 [2025-03-08 04:43:07,766 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:07,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 205 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-08 04:43:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2025-03-08 04:43:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2025-03-08 04:43:07,771 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2025-03-08 04:43:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:07,771 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2025-03-08 04:43:07,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 57 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:07,771 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2025-03-08 04:43:07,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-08 04:43:07,772 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:07,772 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1] [2025-03-08 04:43:07,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2025-03-08 04:43:07,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2025-03-08 04:43:07,972 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:07,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash -311586711, now seen corresponding path program 52 times [2025-03-08 04:43:07,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:07,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658442873] [2025-03-08 04:43:07,973 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:07,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:07,979 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 111 statements into 2 equivalence classes. [2025-03-08 04:43:07,990 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 111 of 111 statements. [2025-03-08 04:43:07,991 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:07,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:08,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:08,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658442873] [2025-03-08 04:43:08,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658442873] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:08,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364904341] [2025-03-08 04:43:08,469 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:08,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:08,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:08,471 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:08,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2025-03-08 04:43:08,543 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 111 statements into 2 equivalence classes. [2025-03-08 04:43:08,573 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 111 of 111 statements. [2025-03-08 04:43:08,573 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:08,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:08,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-03-08 04:43:08,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:08,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:09,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364904341] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:09,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:09,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 32 [2025-03-08 04:43:09,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370944980] [2025-03-08 04:43:09,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:09,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 04:43:09,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:09,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 04:43:09,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=552, Unknown=0, NotChecked=0, Total=992 [2025-03-08 04:43:09,175 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:09,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:09,421 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2025-03-08 04:43:09,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-08 04:43:09,422 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 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 111 [2025-03-08 04:43:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:09,422 INFO L225 Difference]: With dead ends: 123 [2025-03-08 04:43:09,422 INFO L226 Difference]: Without dead ends: 121 [2025-03-08 04:43:09,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 192 SyntacticMatches, 55 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1304, Invalid=2118, Unknown=0, NotChecked=0, Total=3422 [2025-03-08 04:43:09,423 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:09,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-03-08 04:43:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2025-03-08 04:43:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2025-03-08 04:43:09,429 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 111 [2025-03-08 04:43:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:09,429 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2025-03-08 04:43:09,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2025-03-08 04:43:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-08 04:43:09,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:09,429 INFO L218 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 1, 1, 1, 1, 1] [2025-03-08 04:43:09,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2025-03-08 04:43:09,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:09,630 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:09,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:09,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1054537725, now seen corresponding path program 53 times [2025-03-08 04:43:09,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:09,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393707602] [2025-03-08 04:43:09,630 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:09,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:09,636 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 114 statements into 28 equivalence classes. [2025-03-08 04:43:09,651 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) and asserted 114 of 114 statements. [2025-03-08 04:43:09,651 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2025-03-08 04:43:09,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:10,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:10,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393707602] [2025-03-08 04:43:10,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393707602] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:10,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339471807] [2025-03-08 04:43:10,494 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:10,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:10,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:10,496 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:10,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2025-03-08 04:43:10,570 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 114 statements into 28 equivalence classes. [2025-03-08 04:43:10,615 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) and asserted 114 of 114 statements. [2025-03-08 04:43:10,615 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2025-03-08 04:43:10,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:10,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-03-08 04:43:10,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:10,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:11,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339471807] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:11,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:11,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 58 [2025-03-08 04:43:11,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117884617] [2025-03-08 04:43:11,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:11,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-08 04:43:11,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:11,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-08 04:43:11,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2025-03-08 04:43:11,345 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 58 states, 58 states have (on average 1.9655172413793103) internal successors, (114), 58 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:11,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:11,525 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2025-03-08 04:43:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-03-08 04:43:11,525 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9655172413793103) internal successors, (114), 58 states have internal predecessors, (114), 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 114 [2025-03-08 04:43:11,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:11,526 INFO L225 Difference]: With dead ends: 203 [2025-03-08 04:43:11,526 INFO L226 Difference]: Without dead ends: 116 [2025-03-08 04:43:11,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 173 SyntacticMatches, 55 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2241 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2025-03-08 04:43:11,526 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:11,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-08 04:43:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2025-03-08 04:43:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2025-03-08 04:43:11,532 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 114 [2025-03-08 04:43:11,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:11,532 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2025-03-08 04:43:11,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.9655172413793103) internal successors, (114), 58 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2025-03-08 04:43:11,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-08 04:43:11,533 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:11,533 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1] [2025-03-08 04:43:11,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:11,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:11,733 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:11,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2045767502, now seen corresponding path program 54 times [2025-03-08 04:43:11,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:11,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976558460] [2025-03-08 04:43:11,734 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:11,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:11,740 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 115 statements into 28 equivalence classes. [2025-03-08 04:43:11,753 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) and asserted 115 of 115 statements. [2025-03-08 04:43:11,753 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2025-03-08 04:43:11,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 378 proven. 1135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:12,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:12,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976558460] [2025-03-08 04:43:12,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976558460] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:12,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856175074] [2025-03-08 04:43:12,243 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:12,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:12,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:12,245 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:12,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2025-03-08 04:43:12,325 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 115 statements into 28 equivalence classes. [2025-03-08 04:43:12,370 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) and asserted 115 of 115 statements. [2025-03-08 04:43:12,370 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2025-03-08 04:43:12,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:12,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-03-08 04:43:12,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:12,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:12,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856175074] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:12,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:12,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 34 [2025-03-08 04:43:12,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99494866] [2025-03-08 04:43:12,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:12,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-08 04:43:12,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:12,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-08 04:43:12,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=649, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 04:43:12,956 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:13,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:13,229 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2025-03-08 04:43:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-03-08 04:43:13,229 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 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 115 [2025-03-08 04:43:13,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:13,230 INFO L225 Difference]: With dead ends: 127 [2025-03-08 04:43:13,230 INFO L226 Difference]: Without dead ends: 125 [2025-03-08 04:43:13,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 199 SyntacticMatches, 56 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1397, Invalid=2385, Unknown=0, NotChecked=0, Total=3782 [2025-03-08 04:43:13,231 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:13,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-03-08 04:43:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2025-03-08 04:43:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2025-03-08 04:43:13,236 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 115 [2025-03-08 04:43:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:13,236 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2025-03-08 04:43:13,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2025-03-08 04:43:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-08 04:43:13,237 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:13,237 INFO L218 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 1, 1, 1, 1, 1] [2025-03-08 04:43:13,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2025-03-08 04:43:13,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:13,438 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:13,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:13,438 INFO L85 PathProgramCache]: Analyzing trace with hash -125435138, now seen corresponding path program 55 times [2025-03-08 04:43:13,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:13,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211794346] [2025-03-08 04:43:13,438 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:13,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:13,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-08 04:43:13,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-08 04:43:13,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:13,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:14,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:14,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211794346] [2025-03-08 04:43:14,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211794346] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:14,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176155413] [2025-03-08 04:43:14,347 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:14,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:14,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:14,349 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:14,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2025-03-08 04:43:14,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-08 04:43:14,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-08 04:43:14,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:14,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:14,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-03-08 04:43:14,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:14,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:15,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176155413] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:15,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:15,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 61 [2025-03-08 04:43:15,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107871266] [2025-03-08 04:43:15,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:15,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-03-08 04:43:15,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:15,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-03-08 04:43:15,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2025-03-08 04:43:15,250 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 61 states, 61 states have (on average 1.9672131147540983) internal successors, (120), 61 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:15,387 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2025-03-08 04:43:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-03-08 04:43:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.9672131147540983) internal successors, (120), 61 states have internal predecessors, (120), 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 118 [2025-03-08 04:43:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:15,388 INFO L225 Difference]: With dead ends: 210 [2025-03-08 04:43:15,388 INFO L226 Difference]: Without dead ends: 120 [2025-03-08 04:43:15,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 178 SyntacticMatches, 57 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2655 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2025-03-08 04:43:15,389 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:15,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:15,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-03-08 04:43:15,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-03-08 04:43:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2025-03-08 04:43:15,394 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 118 [2025-03-08 04:43:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:15,394 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2025-03-08 04:43:15,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.9672131147540983) internal successors, (120), 61 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2025-03-08 04:43:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-08 04:43:15,395 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:15,395 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1] [2025-03-08 04:43:15,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2025-03-08 04:43:15,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:15,595 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:15,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:15,596 INFO L85 PathProgramCache]: Analyzing trace with hash -140096311, now seen corresponding path program 56 times [2025-03-08 04:43:15,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:15,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315941281] [2025-03-08 04:43:15,596 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:15,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:15,602 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-03-08 04:43:15,612 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-03-08 04:43:15,612 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:15,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 406 proven. 1219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:16,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:16,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315941281] [2025-03-08 04:43:16,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315941281] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:16,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017945186] [2025-03-08 04:43:16,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:16,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:16,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:16,150 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:16,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2025-03-08 04:43:16,233 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-03-08 04:43:16,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-03-08 04:43:16,264 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:16,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:16,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-03-08 04:43:16,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:16,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:16,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017945186] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:16,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:16,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 35 [2025-03-08 04:43:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460695083] [2025-03-08 04:43:16,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:16,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-08 04:43:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:16,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-08 04:43:16,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=686, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 04:43:16,883 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 35 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:17,167 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2025-03-08 04:43:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-03-08 04:43:17,167 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 35 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2025-03-08 04:43:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:17,168 INFO L225 Difference]: With dead ends: 131 [2025-03-08 04:43:17,168 INFO L226 Difference]: Without dead ends: 129 [2025-03-08 04:43:17,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 205 SyntacticMatches, 59 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1909 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1490, Invalid=2542, Unknown=0, NotChecked=0, Total=4032 [2025-03-08 04:43:17,169 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:17,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-03-08 04:43:17,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2025-03-08 04:43:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2025-03-08 04:43:17,177 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 119 [2025-03-08 04:43:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:17,177 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2025-03-08 04:43:17,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 35 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2025-03-08 04:43:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-08 04:43:17,178 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:17,178 INFO L218 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 1, 1, 1, 1, 1] [2025-03-08 04:43:17,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2025-03-08 04:43:17,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-03-08 04:43:17,380 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:17,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1099853731, now seen corresponding path program 57 times [2025-03-08 04:43:17,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:17,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870681874] [2025-03-08 04:43:17,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:17,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:17,386 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 122 statements into 30 equivalence classes. [2025-03-08 04:43:17,400 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) and asserted 122 of 122 statements. [2025-03-08 04:43:17,400 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2025-03-08 04:43:17,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:18,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:18,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870681874] [2025-03-08 04:43:18,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870681874] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:18,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589869188] [2025-03-08 04:43:18,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:18,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:18,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:18,378 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:18,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2025-03-08 04:43:18,462 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 122 statements into 30 equivalence classes. [2025-03-08 04:43:18,515 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) and asserted 122 of 122 statements. [2025-03-08 04:43:18,515 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2025-03-08 04:43:18,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:18,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-03-08 04:43:18,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:18,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:19,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589869188] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:19,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:19,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 63 [2025-03-08 04:43:19,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926046951] [2025-03-08 04:43:19,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:19,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-03-08 04:43:19,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:19,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-03-08 04:43:19,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2025-03-08 04:43:19,362 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 63 states, 63 states have (on average 1.9682539682539681) internal successors, (124), 63 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:19,495 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2025-03-08 04:43:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-03-08 04:43:19,496 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.9682539682539681) internal successors, (124), 63 states have internal predecessors, (124), 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 122 [2025-03-08 04:43:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:19,496 INFO L225 Difference]: With dead ends: 217 [2025-03-08 04:43:19,496 INFO L226 Difference]: Without dead ends: 124 [2025-03-08 04:43:19,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 184 SyntacticMatches, 59 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1023, Invalid=2883, Unknown=0, NotChecked=0, Total=3906 [2025-03-08 04:43:19,497 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:19,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-03-08 04:43:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2025-03-08 04:43:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2025-03-08 04:43:19,502 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2025-03-08 04:43:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:19,503 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2025-03-08 04:43:19,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.9682539682539681) internal successors, (124), 63 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2025-03-08 04:43:19,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-08 04:43:19,503 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:19,503 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1] [2025-03-08 04:43:19,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2025-03-08 04:43:19,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-03-08 04:43:19,704 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:19,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1064379410, now seen corresponding path program 58 times [2025-03-08 04:43:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:19,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937961954] [2025-03-08 04:43:19,704 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:19,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:19,713 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 123 statements into 2 equivalence classes. [2025-03-08 04:43:19,725 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 123 of 123 statements. [2025-03-08 04:43:19,725 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:19,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:20,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937961954] [2025-03-08 04:43:20,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937961954] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678621070] [2025-03-08 04:43:20,315 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:20,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:20,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:20,316 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:20,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2025-03-08 04:43:20,401 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 123 statements into 2 equivalence classes. [2025-03-08 04:43:20,435 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 123 of 123 statements. [2025-03-08 04:43:20,435 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:20,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:20,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-03-08 04:43:20,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:20,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:20,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:21,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678621070] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:21,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:21,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 35 [2025-03-08 04:43:21,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373390294] [2025-03-08 04:43:21,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:21,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-08 04:43:21,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:21,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-08 04:43:21,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=657, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 04:43:21,083 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:21,360 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2025-03-08 04:43:21,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2025-03-08 04:43:21,360 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2025-03-08 04:43:21,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:21,361 INFO L225 Difference]: With dead ends: 135 [2025-03-08 04:43:21,361 INFO L226 Difference]: Without dead ends: 133 [2025-03-08 04:43:21,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 214 SyntacticMatches, 60 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1583, Invalid=2577, Unknown=0, NotChecked=0, Total=4160 [2025-03-08 04:43:21,361 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:21,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 22 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-03-08 04:43:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2025-03-08 04:43:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2025-03-08 04:43:21,368 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 123 [2025-03-08 04:43:21,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:21,368 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2025-03-08 04:43:21,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,368 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2025-03-08 04:43:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-08 04:43:21,368 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:21,368 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1] [2025-03-08 04:43:21,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2025-03-08 04:43:21,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-03-08 04:43:21,569 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:21,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash 817386078, now seen corresponding path program 59 times [2025-03-08 04:43:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:21,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661823017] [2025-03-08 04:43:21,569 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:21,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:21,576 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 126 statements into 31 equivalence classes. [2025-03-08 04:43:21,597 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 126 of 126 statements. [2025-03-08 04:43:21,597 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-03-08 04:43:21,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661823017] [2025-03-08 04:43:22,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661823017] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749354267] [2025-03-08 04:43:22,627 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:22,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:22,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:22,629 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:22,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2025-03-08 04:43:22,716 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 126 statements into 31 equivalence classes. [2025-03-08 04:43:22,765 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 126 of 126 statements. [2025-03-08 04:43:22,765 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-03-08 04:43:22,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:22,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-08 04:43:22,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:22,846 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:23,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749354267] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:23,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:23,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 64 [2025-03-08 04:43:23,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808042856] [2025-03-08 04:43:23,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:23,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-03-08 04:43:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:23,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-03-08 04:43:23,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2025-03-08 04:43:23,641 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 64 states, 64 states have (on average 1.96875) internal successors, (126), 64 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:23,821 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2025-03-08 04:43:23,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-03-08 04:43:23,821 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.96875) internal successors, (126), 64 states have internal predecessors, (126), 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 126 [2025-03-08 04:43:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:23,822 INFO L225 Difference]: With dead ends: 224 [2025-03-08 04:43:23,822 INFO L226 Difference]: Without dead ends: 128 [2025-03-08 04:43:23,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 191 SyntacticMatches, 61 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2760 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2025-03-08 04:43:23,822 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:23,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:23,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-03-08 04:43:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2025-03-08 04:43:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2025-03-08 04:43:23,828 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 126 [2025-03-08 04:43:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:23,828 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2025-03-08 04:43:23,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.96875) internal successors, (126), 64 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:23,829 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2025-03-08 04:43:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-08 04:43:23,829 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:23,829 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1] [2025-03-08 04:43:23,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:24,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:24,030 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:24,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash 633577769, now seen corresponding path program 60 times [2025-03-08 04:43:24,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:24,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019789621] [2025-03-08 04:43:24,030 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:24,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:24,037 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 127 statements into 31 equivalence classes. [2025-03-08 04:43:24,053 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 127 of 127 statements. [2025-03-08 04:43:24,053 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-03-08 04:43:24,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 465 proven. 1396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:24,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:24,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019789621] [2025-03-08 04:43:24,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019789621] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:24,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502119048] [2025-03-08 04:43:24,666 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:24,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:24,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:24,667 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:24,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2025-03-08 04:43:24,767 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 127 statements into 31 equivalence classes. [2025-03-08 04:43:24,835 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 127 of 127 statements. [2025-03-08 04:43:24,835 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-03-08 04:43:24,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:24,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-03-08 04:43:24,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:24,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:25,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502119048] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:25,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:25,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 37 [2025-03-08 04:43:25,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030348417] [2025-03-08 04:43:25,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:25,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 04:43:25,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:25,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 04:43:25,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=763, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 04:43:25,585 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 37 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:25,918 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2025-03-08 04:43:25,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-03-08 04:43:25,919 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 37 states have internal predecessors, (131), 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 127 [2025-03-08 04:43:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:25,919 INFO L225 Difference]: With dead ends: 139 [2025-03-08 04:43:25,919 INFO L226 Difference]: Without dead ends: 137 [2025-03-08 04:43:25,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 220 SyntacticMatches, 62 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1685, Invalid=2871, Unknown=0, NotChecked=0, Total=4556 [2025-03-08 04:43:25,920 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:25,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-03-08 04:43:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2025-03-08 04:43:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2025-03-08 04:43:25,926 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 127 [2025-03-08 04:43:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:25,926 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2025-03-08 04:43:25,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 37 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2025-03-08 04:43:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 04:43:25,927 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:25,927 INFO L218 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1, 1] [2025-03-08 04:43:25,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2025-03-08 04:43:26,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:26,131 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:26,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:26,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1465106621, now seen corresponding path program 61 times [2025-03-08 04:43:26,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:26,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956137834] [2025-03-08 04:43:26,131 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:26,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:26,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 04:43:26,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 04:43:26,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:26,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956137834] [2025-03-08 04:43:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956137834] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52313072] [2025-03-08 04:43:27,246 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:27,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:27,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:27,248 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:27,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2025-03-08 04:43:27,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 04:43:27,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 04:43:27,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:27,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:27,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-03-08 04:43:27,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:27,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:28,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52313072] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:28,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 67 [2025-03-08 04:43:28,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413560221] [2025-03-08 04:43:28,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:28,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-03-08 04:43:28,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:28,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-03-08 04:43:28,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2025-03-08 04:43:28,335 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 67 states, 67 states have (on average 1.9701492537313432) internal successors, (132), 67 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:28,468 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2025-03-08 04:43:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-03-08 04:43:28,468 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.9701492537313432) internal successors, (132), 67 states have internal predecessors, (132), 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 130 [2025-03-08 04:43:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:28,468 INFO L225 Difference]: With dead ends: 231 [2025-03-08 04:43:28,468 INFO L226 Difference]: Without dead ends: 132 [2025-03-08 04:43:28,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 196 SyntacticMatches, 63 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3219 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1155, Invalid=3267, Unknown=0, NotChecked=0, Total=4422 [2025-03-08 04:43:28,469 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:28,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:28,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-03-08 04:43:28,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2025-03-08 04:43:28,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.015267175572519) internal successors, (133), 131 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2025-03-08 04:43:28,475 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 130 [2025-03-08 04:43:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:28,475 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2025-03-08 04:43:28,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.9701492537313432) internal successors, (132), 67 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2025-03-08 04:43:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-08 04:43:28,476 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:28,476 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1, 1] [2025-03-08 04:43:28,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2025-03-08 04:43:28,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:28,676 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:28,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:28,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1988964494, now seen corresponding path program 62 times [2025-03-08 04:43:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:28,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581584438] [2025-03-08 04:43:28,677 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:28,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:28,683 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 131 statements into 2 equivalence classes. [2025-03-08 04:43:28,697 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 131 of 131 statements. [2025-03-08 04:43:28,697 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:28,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 496 proven. 1489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:29,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:29,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581584438] [2025-03-08 04:43:29,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581584438] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:29,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736614331] [2025-03-08 04:43:29,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:29,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:29,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:29,341 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:29,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2025-03-08 04:43:29,436 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 131 statements into 2 equivalence classes. [2025-03-08 04:43:29,471 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 131 of 131 statements. [2025-03-08 04:43:29,471 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:29,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:29,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-03-08 04:43:29,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:29,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:30,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736614331] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:30,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:30,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 38 [2025-03-08 04:43:30,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458051796] [2025-03-08 04:43:30,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:30,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-08 04:43:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:30,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-08 04:43:30,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=803, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 04:43:30,217 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 38 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:30,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:30,548 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2025-03-08 04:43:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-03-08 04:43:30,548 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 38 states have internal predecessors, (135), 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 131 [2025-03-08 04:43:30,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:30,549 INFO L225 Difference]: With dead ends: 143 [2025-03-08 04:43:30,549 INFO L226 Difference]: Without dead ends: 141 [2025-03-08 04:43:30,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 226 SyntacticMatches, 65 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1787, Invalid=3043, Unknown=0, NotChecked=0, Total=4830 [2025-03-08 04:43:30,550 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:30,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 27 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-03-08 04:43:30,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2025-03-08 04:43:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2025-03-08 04:43:30,558 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 131 [2025-03-08 04:43:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:30,558 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2025-03-08 04:43:30,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 38 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2025-03-08 04:43:30,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-08 04:43:30,559 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:30,559 INFO L218 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 1, 1, 1, 1, 1] [2025-03-08 04:43:30,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2025-03-08 04:43:30,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2025-03-08 04:43:30,759 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:30,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:30,760 INFO L85 PathProgramCache]: Analyzing trace with hash -126731842, now seen corresponding path program 63 times [2025-03-08 04:43:30,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:30,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507701296] [2025-03-08 04:43:30,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:30,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:30,768 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 134 statements into 33 equivalence classes. [2025-03-08 04:43:30,786 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 04:43:30,786 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2025-03-08 04:43:30,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:31,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:31,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507701296] [2025-03-08 04:43:31,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507701296] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:31,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702397136] [2025-03-08 04:43:31,992 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:31,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:31,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:31,994 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:31,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2025-03-08 04:43:32,089 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 134 statements into 33 equivalence classes. [2025-03-08 04:43:32,151 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 04:43:32,151 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2025-03-08 04:43:32,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:32,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-03-08 04:43:32,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:32,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702397136] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:33,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:33,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 69 [2025-03-08 04:43:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378781661] [2025-03-08 04:43:33,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:33,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2025-03-08 04:43:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:33,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2025-03-08 04:43:33,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2025-03-08 04:43:33,178 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 69 states, 69 states have (on average 1.9710144927536233) internal successors, (136), 69 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:33,384 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2025-03-08 04:43:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-03-08 04:43:33,384 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.9710144927536233) internal successors, (136), 69 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2025-03-08 04:43:33,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:33,385 INFO L225 Difference]: With dead ends: 238 [2025-03-08 04:43:33,385 INFO L226 Difference]: Without dead ends: 136 [2025-03-08 04:43:33,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 202 SyntacticMatches, 65 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3419 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1224, Invalid=3468, Unknown=0, NotChecked=0, Total=4692 [2025-03-08 04:43:33,385 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:33,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 342 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 04:43:33,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-03-08 04:43:33,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2025-03-08 04:43:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2025-03-08 04:43:33,392 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2025-03-08 04:43:33,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:33,392 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2025-03-08 04:43:33,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.9710144927536233) internal successors, (136), 69 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:33,392 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2025-03-08 04:43:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-08 04:43:33,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:33,392 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1, 1] [2025-03-08 04:43:33,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2025-03-08 04:43:33,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:33,593 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:33,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:33,593 INFO L85 PathProgramCache]: Analyzing trace with hash 512986505, now seen corresponding path program 64 times [2025-03-08 04:43:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:33,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127885761] [2025-03-08 04:43:33,593 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:33,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:33,599 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 135 statements into 2 equivalence classes. [2025-03-08 04:43:33,614 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 135 of 135 statements. [2025-03-08 04:43:33,614 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:33,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 561 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:34,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:34,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127885761] [2025-03-08 04:43:34,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127885761] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:34,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374934076] [2025-03-08 04:43:34,289 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:34,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:34,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:34,290 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:34,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2025-03-08 04:43:34,387 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 135 statements into 2 equivalence classes. [2025-03-08 04:43:34,431 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 135 of 135 statements. [2025-03-08 04:43:34,431 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:34,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:34,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-03-08 04:43:34,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 561 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:34,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 561 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:35,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374934076] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:35,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:35,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 38 [2025-03-08 04:43:35,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148140630] [2025-03-08 04:43:35,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:35,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-08 04:43:35,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:35,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-08 04:43:35,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=771, Unknown=0, NotChecked=0, Total=1406 [2025-03-08 04:43:35,250 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 38 states, 38 states have (on average 3.6052631578947367) internal successors, (137), 38 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:35,614 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2025-03-08 04:43:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2025-03-08 04:43:35,615 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6052631578947367) internal successors, (137), 38 states have internal predecessors, (137), 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 135 [2025-03-08 04:43:35,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:35,615 INFO L225 Difference]: With dead ends: 147 [2025-03-08 04:43:35,615 INFO L226 Difference]: Without dead ends: 145 [2025-03-08 04:43:35,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 235 SyntacticMatches, 66 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1889, Invalid=3081, Unknown=0, NotChecked=0, Total=4970 [2025-03-08 04:43:35,616 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:35,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-03-08 04:43:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2025-03-08 04:43:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2025-03-08 04:43:35,623 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 135 [2025-03-08 04:43:35,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:35,623 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2025-03-08 04:43:35,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6052631578947367) internal successors, (137), 38 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:35,623 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2025-03-08 04:43:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-08 04:43:35,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:35,623 INFO L218 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 1, 1, 1, 1, 1] [2025-03-08 04:43:35,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2025-03-08 04:43:35,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2025-03-08 04:43:35,824 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:35,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:35,824 INFO L85 PathProgramCache]: Analyzing trace with hash 888174307, now seen corresponding path program 65 times [2025-03-08 04:43:35,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:35,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365467688] [2025-03-08 04:43:35,824 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:35,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:35,831 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 138 statements into 34 equivalence classes. [2025-03-08 04:43:35,850 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 04:43:35,850 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2025-03-08 04:43:35,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:37,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365467688] [2025-03-08 04:43:37,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365467688] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432890688] [2025-03-08 04:43:37,082 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:37,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:37,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:37,084 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:37,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2025-03-08 04:43:37,182 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 138 statements into 34 equivalence classes. [2025-03-08 04:43:37,240 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 04:43:37,240 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2025-03-08 04:43:37,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:37,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 70 conjuncts are in the unsatisfiable core [2025-03-08 04:43:37,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:37,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:38,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432890688] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:38,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:38,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 70 [2025-03-08 04:43:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95373948] [2025-03-08 04:43:38,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:38,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-03-08 04:43:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:38,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-03-08 04:43:38,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2025-03-08 04:43:38,303 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand has 70 states, 70 states have (on average 1.9714285714285715) internal successors, (138), 70 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:38,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:38,487 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2025-03-08 04:43:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-03-08 04:43:38,487 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.9714285714285715) internal successors, (138), 70 states have internal predecessors, (138), 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 138 [2025-03-08 04:43:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:38,488 INFO L225 Difference]: With dead ends: 245 [2025-03-08 04:43:38,488 INFO L226 Difference]: Without dead ends: 140 [2025-03-08 04:43:38,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 209 SyntacticMatches, 67 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3333 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2025-03-08 04:43:38,489 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:38,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 294 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:38,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-03-08 04:43:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2025-03-08 04:43:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2025-03-08 04:43:38,496 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 138 [2025-03-08 04:43:38,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:38,496 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2025-03-08 04:43:38,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.9714285714285715) internal successors, (138), 70 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:38,496 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2025-03-08 04:43:38,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 04:43:38,496 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:38,497 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1, 1] [2025-03-08 04:43:38,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2025-03-08 04:43:38,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2025-03-08 04:43:38,697 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:38,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:38,697 INFO L85 PathProgramCache]: Analyzing trace with hash -10687186, now seen corresponding path program 66 times [2025-03-08 04:43:38,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:38,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457507729] [2025-03-08 04:43:38,698 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:38,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:38,704 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 139 statements into 34 equivalence classes. [2025-03-08 04:43:38,721 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 04:43:38,721 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2025-03-08 04:43:38,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 561 proven. 1684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:39,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457507729] [2025-03-08 04:43:39,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457507729] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:39,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178420418] [2025-03-08 04:43:39,428 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:39,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:39,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:39,430 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:39,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2025-03-08 04:43:39,531 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 139 statements into 34 equivalence classes. [2025-03-08 04:43:39,590 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 04:43:39,591 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2025-03-08 04:43:39,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:39,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-03-08 04:43:39,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 595 proven. 1650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:39,725 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 595 proven. 1650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:40,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178420418] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:40,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:40,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 40 [2025-03-08 04:43:40,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287413427] [2025-03-08 04:43:40,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:40,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-08 04:43:40,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:40,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-08 04:43:40,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=886, Unknown=0, NotChecked=0, Total=1560 [2025-03-08 04:43:40,447 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 40 states, 40 states have (on average 3.575) internal successors, (143), 40 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:40,796 INFO L93 Difference]: Finished difference Result 151 states and 152 transitions. [2025-03-08 04:43:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-03-08 04:43:40,797 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.575) internal successors, (143), 40 states have internal predecessors, (143), 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 139 [2025-03-08 04:43:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:40,797 INFO L225 Difference]: With dead ends: 151 [2025-03-08 04:43:40,797 INFO L226 Difference]: Without dead ends: 149 [2025-03-08 04:43:40,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 241 SyntacticMatches, 68 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2545 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2000, Invalid=3402, Unknown=0, NotChecked=0, Total=5402 [2025-03-08 04:43:40,798 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:40,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2025-03-08 04:43:40,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2025-03-08 04:43:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2025-03-08 04:43:40,805 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 139 [2025-03-08 04:43:40,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:40,805 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2025-03-08 04:43:40,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.575) internal successors, (143), 40 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:40,805 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2025-03-08 04:43:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-08 04:43:40,805 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:40,805 INFO L218 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 1, 1, 1, 1, 1] [2025-03-08 04:43:40,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2025-03-08 04:43:41,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2025-03-08 04:43:41,006 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:41,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:41,006 INFO L85 PathProgramCache]: Analyzing trace with hash -553535202, now seen corresponding path program 67 times [2025-03-08 04:43:41,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:41,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867869137] [2025-03-08 04:43:41,006 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:41,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:41,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-08 04:43:41,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-08 04:43:41,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:41,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:42,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:42,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867869137] [2025-03-08 04:43:42,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867869137] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:42,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945050596] [2025-03-08 04:43:42,321 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:42,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:42,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:42,323 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:42,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2025-03-08 04:43:42,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-08 04:43:42,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-08 04:43:42,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:42,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:42,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-03-08 04:43:42,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:42,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:43,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945050596] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:43,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:43,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 72] total 73 [2025-03-08 04:43:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603489004] [2025-03-08 04:43:43,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:43,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-03-08 04:43:43,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:43,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-03-08 04:43:43,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2025-03-08 04:43:43,551 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 73 states, 73 states have (on average 1.9726027397260273) internal successors, (144), 73 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:43,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:43,810 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2025-03-08 04:43:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-03-08 04:43:43,810 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.9726027397260273) internal successors, (144), 73 states have internal predecessors, (144), 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 142 [2025-03-08 04:43:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:43,811 INFO L225 Difference]: With dead ends: 252 [2025-03-08 04:43:43,811 INFO L226 Difference]: Without dead ends: 144 [2025-03-08 04:43:43,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 214 SyntacticMatches, 69 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3837 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1368, Invalid=3888, Unknown=0, NotChecked=0, Total=5256 [2025-03-08 04:43:43,811 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:43,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 427 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 04:43:43,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-03-08 04:43:43,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2025-03-08 04:43:43,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.013986013986014) internal successors, (145), 143 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:43,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2025-03-08 04:43:43,818 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 142 [2025-03-08 04:43:43,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:43,818 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2025-03-08 04:43:43,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.9726027397260273) internal successors, (144), 73 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:43,818 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2025-03-08 04:43:43,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 04:43:43,819 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:43,819 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1, 1] [2025-03-08 04:43:43,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:44,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2025-03-08 04:43:44,019 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:44,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:44,020 INFO L85 PathProgramCache]: Analyzing trace with hash 375656937, now seen corresponding path program 68 times [2025-03-08 04:43:44,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:44,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337418722] [2025-03-08 04:43:44,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:44,027 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 143 statements into 2 equivalence classes. [2025-03-08 04:43:44,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 04:43:44,041 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:44,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 595 proven. 1786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:44,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:44,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337418722] [2025-03-08 04:43:44,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337418722] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:44,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223972482] [2025-03-08 04:43:44,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:44,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:44,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:44,813 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:44,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2025-03-08 04:43:44,917 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 143 statements into 2 equivalence classes. [2025-03-08 04:43:44,954 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 04:43:44,954 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:44,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:44,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 73 conjuncts are in the unsatisfiable core [2025-03-08 04:43:44,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 630 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:45,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:45,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 630 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:45,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223972482] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:45,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:45,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 41 [2025-03-08 04:43:45,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828512801] [2025-03-08 04:43:45,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:45,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-08 04:43:45,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:45,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-08 04:43:45,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=929, Unknown=0, NotChecked=0, Total=1640 [2025-03-08 04:43:45,790 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:46,162 INFO L93 Difference]: Finished difference Result 155 states and 156 transitions. [2025-03-08 04:43:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-03-08 04:43:46,162 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 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 143 [2025-03-08 04:43:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:46,163 INFO L225 Difference]: With dead ends: 155 [2025-03-08 04:43:46,163 INFO L226 Difference]: Without dead ends: 153 [2025-03-08 04:43:46,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 247 SyntacticMatches, 71 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2725 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2111, Invalid=3589, Unknown=0, NotChecked=0, Total=5700 [2025-03-08 04:43:46,164 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:46,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-03-08 04:43:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2025-03-08 04:43:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 146 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:46,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2025-03-08 04:43:46,171 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 143 [2025-03-08 04:43:46,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:46,171 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2025-03-08 04:43:46,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2025-03-08 04:43:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-08 04:43:46,172 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:46,172 INFO L218 NwaCegarLoop]: trace histogram [36, 35, 35, 35, 1, 1, 1, 1, 1] [2025-03-08 04:43:46,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2025-03-08 04:43:46,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:46,373 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:46,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1488120189, now seen corresponding path program 69 times [2025-03-08 04:43:46,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:46,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732587962] [2025-03-08 04:43:46,373 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:46,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:46,380 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 146 statements into 36 equivalence classes. [2025-03-08 04:43:46,396 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) and asserted 146 of 146 statements. [2025-03-08 04:43:46,396 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2025-03-08 04:43:46,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1855 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:47,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:47,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732587962] [2025-03-08 04:43:47,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732587962] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:47,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650367444] [2025-03-08 04:43:47,789 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:47,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:47,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:47,790 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:47,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2025-03-08 04:43:47,897 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 146 statements into 36 equivalence classes. [2025-03-08 04:43:47,964 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) and asserted 146 of 146 statements. [2025-03-08 04:43:47,964 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2025-03-08 04:43:47,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:47,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-03-08 04:43:47,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1855 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:48,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1855 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:49,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650367444] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:49,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:49,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 75 [2025-03-08 04:43:49,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623706015] [2025-03-08 04:43:49,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:49,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2025-03-08 04:43:49,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:49,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2025-03-08 04:43:49,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2025-03-08 04:43:49,116 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand has 75 states, 75 states have (on average 1.9733333333333334) internal successors, (148), 75 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:49,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:49,322 INFO L93 Difference]: Finished difference Result 259 states and 261 transitions. [2025-03-08 04:43:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-03-08 04:43:49,322 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.9733333333333334) internal successors, (148), 75 states have internal predecessors, (148), 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 146 [2025-03-08 04:43:49,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:49,323 INFO L225 Difference]: With dead ends: 259 [2025-03-08 04:43:49,323 INFO L226 Difference]: Without dead ends: 148 [2025-03-08 04:43:49,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 220 SyntacticMatches, 71 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4055 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1443, Invalid=4107, Unknown=0, NotChecked=0, Total=5550 [2025-03-08 04:43:49,323 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:49,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 04:43:49,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-03-08 04:43:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2025-03-08 04:43:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2025-03-08 04:43:49,330 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 146 [2025-03-08 04:43:49,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:49,330 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2025-03-08 04:43:49,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.9733333333333334) internal successors, (148), 75 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:49,330 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2025-03-08 04:43:49,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-08 04:43:49,331 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:49,331 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1, 1] [2025-03-08 04:43:49,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2025-03-08 04:43:49,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:49,531 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:49,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:49,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1089475022, now seen corresponding path program 70 times [2025-03-08 04:43:49,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:49,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262331895] [2025-03-08 04:43:49,532 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:49,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:49,539 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 147 statements into 2 equivalence classes. [2025-03-08 04:43:49,555 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 147 of 147 statements. [2025-03-08 04:43:49,555 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:49,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 666 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:50,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262331895] [2025-03-08 04:43:50,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262331895] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:50,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559488045] [2025-03-08 04:43:50,342 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:50,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:50,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:50,344 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:50,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2025-03-08 04:43:50,455 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 147 statements into 2 equivalence classes. [2025-03-08 04:43:50,498 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 147 of 147 statements. [2025-03-08 04:43:50,498 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:50,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:50,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 75 conjuncts are in the unsatisfiable core [2025-03-08 04:43:50,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 666 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:50,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 666 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:51,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559488045] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:51,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:51,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 41 [2025-03-08 04:43:51,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062009202] [2025-03-08 04:43:51,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:51,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-08 04:43:51,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:51,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-08 04:43:51,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=746, Invalid=894, Unknown=0, NotChecked=0, Total=1640 [2025-03-08 04:43:51,417 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand has 41 states, 41 states have (on average 3.6341463414634148) internal successors, (149), 41 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:51,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:51,789 INFO L93 Difference]: Finished difference Result 159 states and 160 transitions. [2025-03-08 04:43:51,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2025-03-08 04:43:51,789 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.6341463414634148) internal successors, (149), 41 states have internal predecessors, (149), 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 147 [2025-03-08 04:43:51,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:51,790 INFO L225 Difference]: With dead ends: 159 [2025-03-08 04:43:51,790 INFO L226 Difference]: Without dead ends: 157 [2025-03-08 04:43:51,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 255 SyntacticMatches, 73 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2222, Invalid=3630, Unknown=0, NotChecked=0, Total=5852 [2025-03-08 04:43:51,790 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:51,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:51,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-03-08 04:43:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2025-03-08 04:43:51,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 150 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:51,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2025-03-08 04:43:51,799 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 147 [2025-03-08 04:43:51,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:51,799 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2025-03-08 04:43:51,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.6341463414634148) internal successors, (149), 41 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:51,799 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2025-03-08 04:43:51,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-08 04:43:51,799 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:51,800 INFO L218 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 1, 1, 1, 1, 1] [2025-03-08 04:43:51,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2025-03-08 04:43:52,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:52,000 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:52,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash -516632450, now seen corresponding path program 71 times [2025-03-08 04:43:52,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:52,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637425185] [2025-03-08 04:43:52,001 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:52,008 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 150 statements into 37 equivalence classes. [2025-03-08 04:43:52,029 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 04:43:52,029 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2025-03-08 04:43:52,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637425185] [2025-03-08 04:43:53,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637425185] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776902530] [2025-03-08 04:43:53,481 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:53,483 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:53,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2025-03-08 04:43:53,594 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 150 statements into 37 equivalence classes. [2025-03-08 04:43:53,656 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) and asserted 150 of 150 statements. [2025-03-08 04:43:53,656 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2025-03-08 04:43:53,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:53,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 76 conjuncts are in the unsatisfiable core [2025-03-08 04:43:53,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:53,764 INFO L312 TraceCheckSpWp]: Computing backward predicates...