./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/up.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/up.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 ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 13:32:55,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 13:32:55,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 13:32:55,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 13:32:55,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 13:32:55,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 13:32:55,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 13:32:55,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 13:32:55,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 13:32:55,326 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 13:32:55,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 13:32:55,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 13:32:55,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 13:32:55,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 13:32:55,327 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 13:32:55,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 13:32:55,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 13:32:55,327 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 13:32:55,328 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 13:32:55,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 13:32:55,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 13:32:55,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:32:55,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 13:32:55,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 13:32:55,329 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 13:32:55,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 13:32:55,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 13:32:55,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 13:32:55,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 13:32:55,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 13:32:55,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 13:32:55,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 13:32:55,330 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 -> ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f [2025-03-03 13:32:55,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 13:32:55,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 13:32:55,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 13:32:55,552 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 13:32:55,553 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 13:32:55,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/up.i [2025-03-03 13:32:56,699 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ce5a300/d5b529ba332f4fc5b3ece11f3e03d390/FLAGd01e5d11d [2025-03-03 13:32:56,890 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 13:32:56,890 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/up.i [2025-03-03 13:32:56,895 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ce5a300/d5b529ba332f4fc5b3ece11f3e03d390/FLAGd01e5d11d [2025-03-03 13:32:57,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ce5a300/d5b529ba332f4fc5b3ece11f3e03d390 [2025-03-03 13:32:57,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 13:32:57,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 13:32:57,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 13:32:57,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 13:32:57,263 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 13:32:57,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6289d1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57, skipping insertion in model container [2025-03-03 13:32:57,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,275 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 13:32:57,375 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/up.i[893,906] [2025-03-03 13:32:57,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:32:57,394 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 13:32:57,402 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/up.i[893,906] [2025-03-03 13:32:57,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:32:57,415 INFO L204 MainTranslator]: Completed translation [2025-03-03 13:32:57,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57 WrapperNode [2025-03-03 13:32:57,417 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 13:32:57,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 13:32:57,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 13:32:57,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 13:32:57,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,426 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,437 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2025-03-03 13:32:57,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 13:32:57,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 13:32:57,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 13:32:57,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 13:32:57,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,445 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,454 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 13:32:57,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,456 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,457 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 13:32:57,462 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 13:32:57,462 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 13:32:57,462 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 13:32:57,463 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (1/1) ... [2025-03-03 13:32:57,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:32:57,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:32:57,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 13:32:57,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 13:32:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 13:32:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 13:32:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 13:32:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 13:32:57,553 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 13:32:57,554 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 13:32:57,627 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-03 13:32:57,628 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 13:32:57,632 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 13:32:57,633 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 13:32:57,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:32:57 BoogieIcfgContainer [2025-03-03 13:32:57,633 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 13:32:57,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 13:32:57,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 13:32:57,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 13:32:57,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 01:32:57" (1/3) ... [2025-03-03 13:32:57,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704d8be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:32:57, skipping insertion in model container [2025-03-03 13:32:57,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:32:57" (2/3) ... [2025-03-03 13:32:57,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704d8be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:32:57, skipping insertion in model container [2025-03-03 13:32:57,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:32:57" (3/3) ... [2025-03-03 13:32:57,639 INFO L128 eAbstractionObserver]: Analyzing ICFG up.i [2025-03-03 13:32:57,648 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 13:32:57,649 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG up.i that has 1 procedures, 11 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-03 13:32:57,687 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 13:32:57,695 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;@30e2a902, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 13:32:57,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 13:32:57,700 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) [2025-03-03 13:32:57,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-03 13:32:57,703 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:32:57,704 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-03 13:32:57,704 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:32:57,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:32:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1241487229, now seen corresponding path program 1 times [2025-03-03 13:32:57,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:32:57,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149715071] [2025-03-03 13:32:57,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:32:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:32:57,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-03 13:32:57,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-03 13:32:57,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:32:57,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:57,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:32:57,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149715071] [2025-03-03 13:32:57,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149715071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:32:57,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:32:57,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 13:32:57,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663632784] [2025-03-03 13:32:57,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:32:57,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 13:32:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:32:57,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 13:32:57,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 13:32:57,906 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) [2025-03-03 13:32:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:32:57,931 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2025-03-03 13:32:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 13:32:57,932 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 [2025-03-03 13:32:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:32:57,936 INFO L225 Difference]: With dead ends: 21 [2025-03-03 13:32:57,936 INFO L226 Difference]: Without dead ends: 9 [2025-03-03 13:32:57,938 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 [2025-03-03 13:32:57,940 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 [2025-03-03 13:32:57,940 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] [2025-03-03 13:32:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-03-03 13:32:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2025-03-03 13:32:57,955 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) [2025-03-03 13:32:57,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2025-03-03 13:32:57,961 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2025-03-03 13:32:57,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:32:57,961 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2025-03-03 13:32:57,961 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) [2025-03-03 13:32:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2025-03-03 13:32:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-03 13:32:57,961 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:32:57,961 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:32:57,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 13:32:57,962 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:32:57,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:32:57,962 INFO L85 PathProgramCache]: Analyzing trace with hash -167616505, now seen corresponding path program 1 times [2025-03-03 13:32:57,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:32:57,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595548704] [2025-03-03 13:32:57,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:32:57,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:32:57,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-03 13:32:57,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-03 13:32:57,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:32:57,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:58,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:32:58,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595548704] [2025-03-03 13:32:58,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595548704] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:32:58,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387500354] [2025-03-03 13:32:58,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:32:58,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:32:58,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:32:58,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:32:58,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 13:32:58,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-03 13:32:58,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-03 13:32:58,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:32:58,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:58,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 13:32:58,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:32:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:58,139 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:32:58,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387500354] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:32:58,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:32:58,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-03 13:32:58,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161154007] [2025-03-03 13:32:58,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:32:58,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:32:58,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:32:58,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:32:58,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 13:32:58,141 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) [2025-03-03 13:32:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:32:58,169 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2025-03-03 13:32:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:32:58,170 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 [2025-03-03 13:32:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:32:58,171 INFO L225 Difference]: With dead ends: 19 [2025-03-03 13:32:58,171 INFO L226 Difference]: Without dead ends: 17 [2025-03-03 13:32:58,171 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 [2025-03-03 13:32:58,172 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 [2025-03-03 13:32:58,172 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] [2025-03-03 13:32:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-03-03 13:32:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2025-03-03 13:32:58,175 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) [2025-03-03 13:32:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2025-03-03 13:32:58,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2025-03-03 13:32:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:32:58,176 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2025-03-03 13:32:58,176 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) [2025-03-03 13:32:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2025-03-03 13:32:58,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-03 13:32:58,177 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:32:58,177 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:32:58,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 13:32:58,381 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 [2025-03-03 13:32:58,381 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:32:58,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:32:58,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1584505827, now seen corresponding path program 1 times [2025-03-03 13:32:58,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:32:58,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307838680] [2025-03-03 13:32:58,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:32:58,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:32:58,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-03 13:32:58,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-03 13:32:58,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:32:58,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:58,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:32:58,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307838680] [2025-03-03 13:32:58,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307838680] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:32:58,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357360198] [2025-03-03 13:32:58,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:32:58,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:32:58,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:32:58,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:32:58,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 13:32:58,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-03 13:32:58,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-03 13:32:58,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:32:58,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:58,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 13:32:58,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:32:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:58,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:32:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:58,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357360198] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:32:58,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:32:58,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-03-03 13:32:58,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918452632] [2025-03-03 13:32:58,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:32:58,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 13:32:58,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:32:58,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 13:32:58,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 13:32:58,626 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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) [2025-03-03 13:32:58,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:32:58,642 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2025-03-03 13:32:58,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 13:32:58,642 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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) Word has length 10 [2025-03-03 13:32:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:32:58,642 INFO L225 Difference]: With dead ends: 21 [2025-03-03 13:32:58,642 INFO L226 Difference]: Without dead ends: 12 [2025-03-03 13:32:58,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 13:32:58,643 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:32:58,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:32:58,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-03-03 13:32:58,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-03-03 13:32:58,645 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) [2025-03-03 13:32:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2025-03-03 13:32:58,645 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2025-03-03 13:32:58,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:32:58,645 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2025-03-03 13:32:58,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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) [2025-03-03 13:32:58,645 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2025-03-03 13:32:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-03 13:32:58,646 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:32:58,646 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:32:58,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 13:32:58,850 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 [2025-03-03 13:32:58,850 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:32:58,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:32:58,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1130960749, now seen corresponding path program 2 times [2025-03-03 13:32:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:32:58,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491435439] [2025-03-03 13:32:58,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:32:58,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:32:58,857 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-03-03 13:32:58,862 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 13:32:58,866 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:32:58,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:58,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:32:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491435439] [2025-03-03 13:32:58,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491435439] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:32:58,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467333327] [2025-03-03 13:32:58,949 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:32:58,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:32:58,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:32:58,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:32:58,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 13:32:58,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-03-03 13:32:58,980 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-03-03 13:32:58,980 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:32:58,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:58,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 13:32:58,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:32:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:59,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:32:59,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:59,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467333327] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:32:59,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:32:59,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2025-03-03 13:32:59,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690140631] [2025-03-03 13:32:59,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:32:59,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 13:32:59,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:32:59,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 13:32:59,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 13:32:59,051 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) [2025-03-03 13:32:59,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:32:59,089 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2025-03-03 13:32:59,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 13:32:59,090 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 [2025-03-03 13:32:59,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:32:59,090 INFO L225 Difference]: With dead ends: 23 [2025-03-03 13:32:59,091 INFO L226 Difference]: Without dead ends: 21 [2025-03-03 13:32:59,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-03-03 13:32:59,092 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 [2025-03-03 13:32:59,092 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] [2025-03-03 13:32:59,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-03 13:32:59,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2025-03-03 13:32:59,097 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) [2025-03-03 13:32:59,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2025-03-03 13:32:59,097 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2025-03-03 13:32:59,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:32:59,097 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2025-03-03 13:32:59,097 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) [2025-03-03 13:32:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2025-03-03 13:32:59,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-03 13:32:59,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:32:59,098 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-03-03 13:32:59,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 13:32:59,298 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 [2025-03-03 13:32:59,298 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:32:59,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:32:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1565922627, now seen corresponding path program 3 times [2025-03-03 13:32:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:32:59,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777155150] [2025-03-03 13:32:59,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:32:59,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:32:59,303 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 3 equivalence classes. [2025-03-03 13:32:59,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 14 of 14 statements. [2025-03-03 13:32:59,311 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 13:32:59,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:59,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:32:59,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777155150] [2025-03-03 13:32:59,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777155150] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:32:59,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598079219] [2025-03-03 13:32:59,383 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:32:59,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:32:59,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:32:59,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:32:59,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 13:32:59,405 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 3 equivalence classes. [2025-03-03 13:32:59,412 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 14 of 14 statements. [2025-03-03 13:32:59,412 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 13:32:59,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:59,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 13:32:59,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:32:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:59,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:32:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:59,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598079219] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:32:59,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:32:59,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-03-03 13:32:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168395173] [2025-03-03 13:32:59,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:32:59,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 13:32:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:32:59,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 13:32:59,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:32:59,509 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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) [2025-03-03 13:32:59,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:32:59,530 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2025-03-03 13:32:59,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 13:32:59,531 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 14 [2025-03-03 13:32:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:32:59,531 INFO L225 Difference]: With dead ends: 28 [2025-03-03 13:32:59,531 INFO L226 Difference]: Without dead ends: 16 [2025-03-03 13:32:59,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:32:59,532 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:32:59,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:32:59,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-03-03 13:32:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-03-03 13:32:59,534 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) [2025-03-03 13:32:59,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2025-03-03 13:32:59,535 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2025-03-03 13:32:59,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:32:59,535 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2025-03-03 13:32:59,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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) [2025-03-03 13:32:59,535 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2025-03-03 13:32:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-03 13:32:59,536 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:32:59,536 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-03-03 13:32:59,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 13:32:59,736 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 [2025-03-03 13:32:59,737 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:32:59,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:32:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1874294457, now seen corresponding path program 4 times [2025-03-03 13:32:59,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:32:59,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721160328] [2025-03-03 13:32:59,737 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:32:59,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:32:59,741 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-03-03 13:32:59,749 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-03 13:32:59,749 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:32:59,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:59,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:32:59,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721160328] [2025-03-03 13:32:59,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721160328] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:32:59,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171876463] [2025-03-03 13:32:59,829 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:32:59,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:32:59,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:32:59,831 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) [2025-03-03 13:32:59,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 13:32:59,852 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-03-03 13:32:59,863 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-03 13:32:59,863 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:32:59,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:32:59,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 13:32:59,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:32:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:59,892 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:32:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:32:59,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171876463] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:32:59,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:32:59,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2025-03-03 13:32:59,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315687503] [2025-03-03 13:32:59,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:32:59,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 13:32:59,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:32:59,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 13:32:59,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-03 13:32:59,928 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) [2025-03-03 13:32:59,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:32:59,962 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2025-03-03 13:32:59,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 13:32:59,962 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 [2025-03-03 13:32:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:32:59,962 INFO L225 Difference]: With dead ends: 27 [2025-03-03 13:32:59,962 INFO L226 Difference]: Without dead ends: 25 [2025-03-03 13:32:59,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:32:59,965 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:32:59,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:32:59,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-03-03 13:32:59,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2025-03-03 13:32:59,969 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) [2025-03-03 13:32:59,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2025-03-03 13:32:59,969 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2025-03-03 13:32:59,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:32:59,969 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2025-03-03 13:32:59,969 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) [2025-03-03 13:32:59,969 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2025-03-03 13:32:59,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-03 13:32:59,970 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:32:59,970 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2025-03-03 13:32:59,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 13:33:00,170 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 [2025-03-03 13:33:00,170 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:00,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1764487843, now seen corresponding path program 5 times [2025-03-03 13:33:00,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:00,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386415260] [2025-03-03 13:33:00,171 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:00,175 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 4 equivalence classes. [2025-03-03 13:33:00,181 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-03-03 13:33:00,181 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-03 13:33:00,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:00,245 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:00,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386415260] [2025-03-03 13:33:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386415260] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980736860] [2025-03-03 13:33:00,245 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:00,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:00,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:00,247 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) [2025-03-03 13:33:00,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 13:33:00,268 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 4 equivalence classes. [2025-03-03 13:33:00,277 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-03-03 13:33:00,277 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-03 13:33:00,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:00,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 13:33:00,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:00,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:00,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980736860] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:00,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:00,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2025-03-03 13:33:00,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437794069] [2025-03-03 13:33:00,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:00,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 13:33:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:00,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 13:33:00,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-03-03 13:33:00,400 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2025-03-03 13:33:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:00,444 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2025-03-03 13:33:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 13:33:00,445 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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 18 [2025-03-03 13:33:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:00,445 INFO L225 Difference]: With dead ends: 35 [2025-03-03 13:33:00,445 INFO L226 Difference]: Without dead ends: 20 [2025-03-03 13:33:00,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-03-03 13:33:00,446 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:00,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-03-03 13:33:00,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-03-03 13:33:00,448 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) [2025-03-03 13:33:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2025-03-03 13:33:00,448 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2025-03-03 13:33:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:00,448 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2025-03-03 13:33:00,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2025-03-03 13:33:00,448 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2025-03-03 13:33:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-03 13:33:00,450 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:00,450 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1] [2025-03-03 13:33:00,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:00,654 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 [2025-03-03 13:33:00,654 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:00,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:00,654 INFO L85 PathProgramCache]: Analyzing trace with hash 300170285, now seen corresponding path program 6 times [2025-03-03 13:33:00,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:00,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116792157] [2025-03-03 13:33:00,654 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:00,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:00,659 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-03-03 13:33:00,664 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-03-03 13:33:00,664 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-03 13:33:00,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:00,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:00,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116792157] [2025-03-03 13:33:00,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116792157] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:00,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142317903] [2025-03-03 13:33:00,749 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:00,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:00,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:00,752 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) [2025-03-03 13:33:00,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 13:33:00,775 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-03-03 13:33:00,783 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-03-03 13:33:00,783 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-03-03 13:33:00,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:00,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-03 13:33:00,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:00,818 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:00,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142317903] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:00,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:00,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2025-03-03 13:33:00,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861670758] [2025-03-03 13:33:00,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:00,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 13:33:00,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:00,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 13:33:00,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-03 13:33:00,867 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) [2025-03-03 13:33:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:00,919 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2025-03-03 13:33:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 13:33:00,919 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 [2025-03-03 13:33:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:00,919 INFO L225 Difference]: With dead ends: 31 [2025-03-03 13:33:00,919 INFO L226 Difference]: Without dead ends: 29 [2025-03-03 13:33:00,920 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 [2025-03-03 13:33:00,920 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:00,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:00,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-03 13:33:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2025-03-03 13:33:00,922 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) [2025-03-03 13:33:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2025-03-03 13:33:00,924 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2025-03-03 13:33:00,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:00,924 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2025-03-03 13:33:00,925 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) [2025-03-03 13:33:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2025-03-03 13:33:00,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-03 13:33:00,926 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:00,926 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2025-03-03 13:33:00,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 13:33:01,127 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 [2025-03-03 13:33:01,127 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:01,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash 251891197, now seen corresponding path program 7 times [2025-03-03 13:33:01,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:01,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380848739] [2025-03-03 13:33:01,128 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:01,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-03 13:33:01,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-03 13:33:01,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:01,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:01,254 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:01,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:01,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380848739] [2025-03-03 13:33:01,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380848739] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:01,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076499965] [2025-03-03 13:33:01,255 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:01,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:01,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:01,257 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) [2025-03-03 13:33:01,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 13:33:01,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-03 13:33:01,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-03 13:33:01,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:01,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:01,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 13:33:01,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:01,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:01,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076499965] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:01,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:01,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2025-03-03 13:33:01,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958869756] [2025-03-03 13:33:01,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:01,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-03 13:33:01,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:01,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-03 13:33:01,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2025-03-03 13:33:01,501 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 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) [2025-03-03 13:33:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:01,546 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2025-03-03 13:33:01,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 13:33:01,547 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 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 22 [2025-03-03 13:33:01,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:01,547 INFO L225 Difference]: With dead ends: 42 [2025-03-03 13:33:01,547 INFO L226 Difference]: Without dead ends: 24 [2025-03-03 13:33:01,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2025-03-03 13:33:01,548 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:01,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-03-03 13:33:01,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-03-03 13:33:01,552 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) [2025-03-03 13:33:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2025-03-03 13:33:01,553 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2025-03-03 13:33:01,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:01,553 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2025-03-03 13:33:01,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 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) [2025-03-03 13:33:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2025-03-03 13:33:01,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-03 13:33:01,554 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:01,554 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2025-03-03 13:33:01,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:01,754 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 [2025-03-03 13:33:01,754 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:01,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:01,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1475870073, now seen corresponding path program 8 times [2025-03-03 13:33:01,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:01,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122275851] [2025-03-03 13:33:01,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:01,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:01,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-03 13:33:01,764 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-03 13:33:01,764 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:01,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:01,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122275851] [2025-03-03 13:33:01,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122275851] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415822749] [2025-03-03 13:33:01,876 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:01,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:01,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:01,878 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) [2025-03-03 13:33:01,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 13:33:01,901 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-03 13:33:01,912 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-03 13:33:01,912 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:01,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:01,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-03 13:33:01,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:01,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:02,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415822749] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:02,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:02,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2025-03-03 13:33:02,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857778069] [2025-03-03 13:33:02,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:02,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 13:33:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:02,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 13:33:02,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:33:02,015 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) [2025-03-03 13:33:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:02,080 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2025-03-03 13:33:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 13:33:02,081 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 [2025-03-03 13:33:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:02,082 INFO L225 Difference]: With dead ends: 35 [2025-03-03 13:33:02,082 INFO L226 Difference]: Without dead ends: 33 [2025-03-03 13:33:02,082 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 [2025-03-03 13:33:02,083 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:02,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-03-03 13:33:02,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2025-03-03 13:33:02,087 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) [2025-03-03 13:33:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2025-03-03 13:33:02,088 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2025-03-03 13:33:02,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:02,089 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2025-03-03 13:33:02,089 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) [2025-03-03 13:33:02,089 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2025-03-03 13:33:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-03 13:33:02,090 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:02,090 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2025-03-03 13:33:02,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-03 13:33:02,294 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 [2025-03-03 13:33:02,294 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:02,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:02,295 INFO L85 PathProgramCache]: Analyzing trace with hash -64294557, now seen corresponding path program 9 times [2025-03-03 13:33:02,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:02,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972495714] [2025-03-03 13:33:02,295 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:02,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:02,300 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 6 equivalence classes. [2025-03-03 13:33:02,309 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 26 of 26 statements. [2025-03-03 13:33:02,312 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-03 13:33:02,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:02,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972495714] [2025-03-03 13:33:02,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972495714] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:02,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649322294] [2025-03-03 13:33:02,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:02,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:02,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:02,458 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) [2025-03-03 13:33:02,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 13:33:02,483 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 6 equivalence classes. [2025-03-03 13:33:02,495 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 26 of 26 statements. [2025-03-03 13:33:02,495 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-03 13:33:02,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:02,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-03 13:33:02,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:02,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:02,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649322294] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:02,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:02,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2025-03-03 13:33:02,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560666834] [2025-03-03 13:33:02,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:02,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-03 13:33:02,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:02,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-03 13:33:02,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2025-03-03 13:33:02,724 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 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) [2025-03-03 13:33:02,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:02,775 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2025-03-03 13:33:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 13:33:02,776 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 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) Word has length 26 [2025-03-03 13:33:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:02,776 INFO L225 Difference]: With dead ends: 49 [2025-03-03 13:33:02,776 INFO L226 Difference]: Without dead ends: 28 [2025-03-03 13:33:02,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2025-03-03 13:33:02,777 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:02,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:02,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-03 13:33:02,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-03-03 13:33:02,779 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) [2025-03-03 13:33:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2025-03-03 13:33:02,779 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2025-03-03 13:33:02,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:02,779 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2025-03-03 13:33:02,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 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) [2025-03-03 13:33:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2025-03-03 13:33:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-03 13:33:02,780 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:02,780 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2025-03-03 13:33:02,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:02,984 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 [2025-03-03 13:33:02,984 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:02,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:02,984 INFO L85 PathProgramCache]: Analyzing trace with hash -579989267, now seen corresponding path program 10 times [2025-03-03 13:33:02,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:02,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709180645] [2025-03-03 13:33:02,984 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:02,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:02,988 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-03-03 13:33:02,994 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-03 13:33:02,994 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:02,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:03,088 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:03,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:03,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709180645] [2025-03-03 13:33:03,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709180645] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:03,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525954964] [2025-03-03 13:33:03,089 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:03,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:03,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:03,091 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) [2025-03-03 13:33:03,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-03 13:33:03,115 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-03-03 13:33:03,127 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-03 13:33:03,127 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:03,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:03,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-03 13:33:03,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:03,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:03,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525954964] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:03,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:03,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2025-03-03 13:33:03,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895839150] [2025-03-03 13:33:03,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:03,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 13:33:03,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:03,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 13:33:03,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:33:03,232 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) [2025-03-03 13:33:03,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:03,290 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2025-03-03 13:33:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 13:33:03,291 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 [2025-03-03 13:33:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:03,291 INFO L225 Difference]: With dead ends: 39 [2025-03-03 13:33:03,291 INFO L226 Difference]: Without dead ends: 37 [2025-03-03 13:33:03,292 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 [2025-03-03 13:33:03,292 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:03,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:03,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-03 13:33:03,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-03-03 13:33:03,295 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) [2025-03-03 13:33:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2025-03-03 13:33:03,295 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2025-03-03 13:33:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:03,295 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2025-03-03 13:33:03,295 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) [2025-03-03 13:33:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2025-03-03 13:33:03,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-03 13:33:03,295 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:03,296 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2025-03-03 13:33:03,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:03,496 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 [2025-03-03 13:33:03,496 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:03,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:03,496 INFO L85 PathProgramCache]: Analyzing trace with hash 194019645, now seen corresponding path program 11 times [2025-03-03 13:33:03,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:03,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812748439] [2025-03-03 13:33:03,497 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:03,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:03,501 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 7 equivalence classes. [2025-03-03 13:33:03,508 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 30 of 30 statements. [2025-03-03 13:33:03,508 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-03-03 13:33:03,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:03,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812748439] [2025-03-03 13:33:03,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812748439] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:03,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64282242] [2025-03-03 13:33:03,644 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:03,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:03,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:03,645 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) [2025-03-03 13:33:03,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-03 13:33:03,673 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 7 equivalence classes. [2025-03-03 13:33:03,688 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 30 of 30 statements. [2025-03-03 13:33:03,688 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-03-03 13:33:03,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:03,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-03 13:33:03,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:03,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:03,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64282242] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:03,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:03,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 23 [2025-03-03 13:33:03,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365916485] [2025-03-03 13:33:03,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:03,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-03 13:33:03,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:03,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-03 13:33:03,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2025-03-03 13:33:03,919 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:03,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:03,977 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2025-03-03 13:33:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-03 13:33:03,978 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 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 [2025-03-03 13:33:03,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:03,978 INFO L225 Difference]: With dead ends: 56 [2025-03-03 13:33:03,978 INFO L226 Difference]: Without dead ends: 32 [2025-03-03 13:33:03,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 13 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2025-03-03 13:33:03,979 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:03,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-03-03 13:33:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-03-03 13:33:03,981 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) [2025-03-03 13:33:03,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2025-03-03 13:33:03,981 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2025-03-03 13:33:03,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:03,981 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2025-03-03 13:33:03,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:03,981 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2025-03-03 13:33:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-03-03 13:33:03,981 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:03,982 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1] [2025-03-03 13:33:03,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:04,182 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 [2025-03-03 13:33:04,182 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:04,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:04,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1338297287, now seen corresponding path program 12 times [2025-03-03 13:33:04,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:04,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658558908] [2025-03-03 13:33:04,183 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:04,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:04,186 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 7 equivalence classes. [2025-03-03 13:33:04,192 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 31 statements. [2025-03-03 13:33:04,193 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-03 13:33:04,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:04,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:04,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658558908] [2025-03-03 13:33:04,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658558908] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:04,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736492021] [2025-03-03 13:33:04,290 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:04,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:04,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:04,292 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) [2025-03-03 13:33:04,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-03 13:33:04,316 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 7 equivalence classes. [2025-03-03 13:33:04,329 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 31 statements. [2025-03-03 13:33:04,329 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-03 13:33:04,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:04,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-03 13:33:04,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:04,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:04,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736492021] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:04,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:04,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2025-03-03 13:33:04,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107649708] [2025-03-03 13:33:04,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:04,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 13:33:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:04,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 13:33:04,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:33:04,444 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) [2025-03-03 13:33:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:04,516 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2025-03-03 13:33:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-03 13:33:04,516 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 [2025-03-03 13:33:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:04,517 INFO L225 Difference]: With dead ends: 43 [2025-03-03 13:33:04,517 INFO L226 Difference]: Without dead ends: 41 [2025-03-03 13:33:04,517 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 [2025-03-03 13:33:04,517 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:04,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-03-03 13:33:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2025-03-03 13:33:04,519 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) [2025-03-03 13:33:04,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2025-03-03 13:33:04,522 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2025-03-03 13:33:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:04,523 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2025-03-03 13:33:04,523 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) [2025-03-03 13:33:04,523 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2025-03-03 13:33:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-03 13:33:04,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:04,523 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2025-03-03 13:33:04,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:04,724 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 [2025-03-03 13:33:04,724 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:04,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -966090717, now seen corresponding path program 13 times [2025-03-03 13:33:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:04,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766257705] [2025-03-03 13:33:04,724 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:04,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:04,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-03 13:33:04,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-03 13:33:04,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:04,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:04,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:04,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766257705] [2025-03-03 13:33:04,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766257705] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:04,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978033078] [2025-03-03 13:33:04,882 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:04,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:04,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:04,884 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) [2025-03-03 13:33:04,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-03 13:33:04,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-03 13:33:04,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-03 13:33:04,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:04,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:04,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-03 13:33:04,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:05,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:05,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978033078] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:05,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:05,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2025-03-03 13:33:05,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460117976] [2025-03-03 13:33:05,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:05,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-03 13:33:05,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:05,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-03 13:33:05,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2025-03-03 13:33:05,217 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 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) [2025-03-03 13:33:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:05,281 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2025-03-03 13:33:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-03 13:33:05,282 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 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 34 [2025-03-03 13:33:05,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:05,283 INFO L225 Difference]: With dead ends: 63 [2025-03-03 13:33:05,283 INFO L226 Difference]: Without dead ends: 36 [2025-03-03 13:33:05,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 14 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2025-03-03 13:33:05,285 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:05,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:05,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-03 13:33:05,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-03-03 13:33:05,287 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) [2025-03-03 13:33:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2025-03-03 13:33:05,287 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 34 [2025-03-03 13:33:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:05,288 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2025-03-03 13:33:05,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 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) [2025-03-03 13:33:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2025-03-03 13:33:05,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-03 13:33:05,289 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:05,289 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1] [2025-03-03 13:33:05,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:05,489 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 [2025-03-03 13:33:05,489 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:05,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash -352152147, now seen corresponding path program 14 times [2025-03-03 13:33:05,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:05,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767819301] [2025-03-03 13:33:05,490 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:05,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:05,496 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-03 13:33:05,503 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-03 13:33:05,503 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:05,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 28 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:05,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:05,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767819301] [2025-03-03 13:33:05,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767819301] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:05,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452861444] [2025-03-03 13:33:05,628 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:05,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:05,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:05,630 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) [2025-03-03 13:33:05,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-03 13:33:05,655 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-03-03 13:33:05,668 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-03 13:33:05,668 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:05,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:05,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-03 13:33:05,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:05,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:05,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452861444] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:05,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:05,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2025-03-03 13:33:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101795539] [2025-03-03 13:33:05,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:05,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 13:33:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:05,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 13:33:05,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2025-03-03 13:33:05,813 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) [2025-03-03 13:33:05,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:05,896 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2025-03-03 13:33:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-03 13:33:05,896 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 [2025-03-03 13:33:05,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:05,897 INFO L225 Difference]: With dead ends: 47 [2025-03-03 13:33:05,897 INFO L226 Difference]: Without dead ends: 45 [2025-03-03 13:33:05,897 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 [2025-03-03 13:33:05,898 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:05,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:05,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-03 13:33:05,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2025-03-03 13:33:05,900 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) [2025-03-03 13:33:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2025-03-03 13:33:05,900 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2025-03-03 13:33:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:05,900 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2025-03-03 13:33:05,900 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) [2025-03-03 13:33:05,901 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2025-03-03 13:33:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-03 13:33:05,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:05,901 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1] [2025-03-03 13:33:05,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:06,105 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 [2025-03-03 13:33:06,105 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:06,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:06,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1641333885, now seen corresponding path program 15 times [2025-03-03 13:33:06,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:06,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077040412] [2025-03-03 13:33:06,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:06,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:06,109 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 9 equivalence classes. [2025-03-03 13:33:06,115 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 38 of 38 statements. [2025-03-03 13:33:06,117 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-03-03 13:33:06,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:06,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:06,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077040412] [2025-03-03 13:33:06,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077040412] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:06,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488287624] [2025-03-03 13:33:06,282 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:06,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:06,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:06,284 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) [2025-03-03 13:33:06,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-03 13:33:06,311 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 9 equivalence classes. [2025-03-03 13:33:06,326 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 38 of 38 statements. [2025-03-03 13:33:06,327 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-03-03 13:33:06,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:06,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-03 13:33:06,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:06,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:06,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488287624] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:06,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:06,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2025-03-03 13:33:06,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76149422] [2025-03-03 13:33:06,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:06,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-03 13:33:06,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:06,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-03 13:33:06,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2025-03-03 13:33:06,634 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:06,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:06,695 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2025-03-03 13:33:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-03 13:33:06,696 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2025-03-03 13:33:06,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:06,696 INFO L225 Difference]: With dead ends: 70 [2025-03-03 13:33:06,696 INFO L226 Difference]: Without dead ends: 40 [2025-03-03 13:33:06,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2025-03-03 13:33:06,697 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:06,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:06,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-03-03 13:33:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-03-03 13:33:06,699 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) [2025-03-03 13:33:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2025-03-03 13:33:06,699 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2025-03-03 13:33:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:06,699 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2025-03-03 13:33:06,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:06,699 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2025-03-03 13:33:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-03 13:33:06,703 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:06,703 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1] [2025-03-03 13:33:06,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:06,907 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 [2025-03-03 13:33:06,907 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:06,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:06,907 INFO L85 PathProgramCache]: Analyzing trace with hash -419240697, now seen corresponding path program 16 times [2025-03-03 13:33:06,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:06,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924514497] [2025-03-03 13:33:06,907 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:06,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:06,911 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-03-03 13:33:06,917 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-03-03 13:33:06,919 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:06,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:07,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:07,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924514497] [2025-03-03 13:33:07,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924514497] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:07,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644232475] [2025-03-03 13:33:07,036 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:07,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:07,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:07,038 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) [2025-03-03 13:33:07,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-03 13:33:07,067 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-03-03 13:33:07,081 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-03-03 13:33:07,081 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:07,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:07,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-03 13:33:07,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:07,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:07,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644232475] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:07,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:07,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2025-03-03 13:33:07,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556367674] [2025-03-03 13:33:07,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:07,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 13:33:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:07,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 13:33:07,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-03 13:33:07,262 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) [2025-03-03 13:33:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:07,344 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2025-03-03 13:33:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-03 13:33:07,345 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 [2025-03-03 13:33:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:07,345 INFO L225 Difference]: With dead ends: 51 [2025-03-03 13:33:07,345 INFO L226 Difference]: Without dead ends: 49 [2025-03-03 13:33:07,346 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 [2025-03-03 13:33:07,346 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 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 [2025-03-03 13:33:07,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:07,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-03-03 13:33:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2025-03-03 13:33:07,350 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) [2025-03-03 13:33:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2025-03-03 13:33:07,351 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 39 [2025-03-03 13:33:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:07,351 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2025-03-03 13:33:07,351 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) [2025-03-03 13:33:07,351 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2025-03-03 13:33:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-03 13:33:07,351 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:07,351 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1] [2025-03-03 13:33:07,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:07,552 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 [2025-03-03 13:33:07,552 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:07,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash 166133475, now seen corresponding path program 17 times [2025-03-03 13:33:07,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:07,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432264402] [2025-03-03 13:33:07,553 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:07,556 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 10 equivalence classes. [2025-03-03 13:33:07,568 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 42 of 42 statements. [2025-03-03 13:33:07,568 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-03 13:33:07,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:07,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:07,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432264402] [2025-03-03 13:33:07,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432264402] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:07,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965650138] [2025-03-03 13:33:07,764 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:07,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:07,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:07,766 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) [2025-03-03 13:33:07,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-03 13:33:07,795 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 10 equivalence classes. [2025-03-03 13:33:07,811 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 42 of 42 statements. [2025-03-03 13:33:07,812 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-03-03 13:33:07,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:07,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-03 13:33:07,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:08,026 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:08,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:08,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965650138] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:08,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:08,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 32 [2025-03-03 13:33:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580971394] [2025-03-03 13:33:08,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:08,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-03 13:33:08,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:08,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-03 13:33:08,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2025-03-03 13:33:08,188 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 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) [2025-03-03 13:33:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:08,249 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2025-03-03 13:33:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-03 13:33:08,250 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 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 42 [2025-03-03 13:33:08,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:08,250 INFO L225 Difference]: With dead ends: 77 [2025-03-03 13:33:08,250 INFO L226 Difference]: Without dead ends: 44 [2025-03-03 13:33:08,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 19 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2025-03-03 13:33:08,251 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:08,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-03-03 13:33:08,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-03-03 13:33:08,254 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) [2025-03-03 13:33:08,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2025-03-03 13:33:08,255 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2025-03-03 13:33:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:08,255 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2025-03-03 13:33:08,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 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) [2025-03-03 13:33:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2025-03-03 13:33:08,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-03-03 13:33:08,255 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:08,255 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1] [2025-03-03 13:33:08,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:08,455 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 [2025-03-03 13:33:08,456 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:08,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:08,456 INFO L85 PathProgramCache]: Analyzing trace with hash 312330861, now seen corresponding path program 18 times [2025-03-03 13:33:08,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:08,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400563866] [2025-03-03 13:33:08,456 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:08,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:08,465 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 10 equivalence classes. [2025-03-03 13:33:08,486 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 43 of 43 statements. [2025-03-03 13:33:08,486 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-03-03 13:33:08,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 45 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:08,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400563866] [2025-03-03 13:33:08,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400563866] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945557716] [2025-03-03 13:33:08,621 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:08,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:08,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:08,624 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) [2025-03-03 13:33:08,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-03 13:33:08,656 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 10 equivalence classes. [2025-03-03 13:33:08,674 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 43 of 43 statements. [2025-03-03 13:33:08,674 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-03-03 13:33:08,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:08,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-03 13:33:08,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:08,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:08,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945557716] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:08,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:08,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2025-03-03 13:33:08,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697052441] [2025-03-03 13:33:08,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:08,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-03 13:33:08,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:08,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-03 13:33:08,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2025-03-03 13:33:08,868 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) [2025-03-03 13:33:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:08,979 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2025-03-03 13:33:08,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-03 13:33:08,979 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 [2025-03-03 13:33:08,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:08,979 INFO L225 Difference]: With dead ends: 55 [2025-03-03 13:33:08,979 INFO L226 Difference]: Without dead ends: 53 [2025-03-03 13:33:08,980 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 [2025-03-03 13:33:08,980 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:08,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-03-03 13:33:08,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2025-03-03 13:33:08,987 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) [2025-03-03 13:33:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2025-03-03 13:33:08,988 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 43 [2025-03-03 13:33:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:08,988 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2025-03-03 13:33:08,988 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) [2025-03-03 13:33:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2025-03-03 13:33:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-03 13:33:08,988 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:08,988 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2025-03-03 13:33:09,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-03 13:33:09,188 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 [2025-03-03 13:33:09,189 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:09,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:09,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1750357949, now seen corresponding path program 19 times [2025-03-03 13:33:09,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:09,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197386785] [2025-03-03 13:33:09,189 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:09,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:09,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-03 13:33:09,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-03 13:33:09,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:09,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:09,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:09,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197386785] [2025-03-03 13:33:09,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197386785] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:09,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822789362] [2025-03-03 13:33:09,389 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:09,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:09,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:09,391 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) [2025-03-03 13:33:09,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-03 13:33:09,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-03 13:33:09,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-03 13:33:09,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:09,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:09,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-03 13:33:09,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:09,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:09,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822789362] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:09,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:09,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2025-03-03 13:33:09,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124064279] [2025-03-03 13:33:09,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:09,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-03 13:33:09,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:09,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-03 13:33:09,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2025-03-03 13:33:09,836 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 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) [2025-03-03 13:33:09,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:09,895 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2025-03-03 13:33:09,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-03 13:33:09,896 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 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 46 [2025-03-03 13:33:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:09,896 INFO L225 Difference]: With dead ends: 84 [2025-03-03 13:33:09,896 INFO L226 Difference]: Without dead ends: 48 [2025-03-03 13:33:09,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 59 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2025-03-03 13:33:09,897 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:09,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-03-03 13:33:09,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-03-03 13:33:09,899 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) [2025-03-03 13:33:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2025-03-03 13:33:09,902 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2025-03-03 13:33:09,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:09,903 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2025-03-03 13:33:09,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 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) [2025-03-03 13:33:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2025-03-03 13:33:09,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-03-03 13:33:09,903 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:09,903 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2025-03-03 13:33:09,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-03 13:33:10,104 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 [2025-03-03 13:33:10,104 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:10,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1514556999, now seen corresponding path program 20 times [2025-03-03 13:33:10,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:10,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122422770] [2025-03-03 13:33:10,104 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:10,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:10,108 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-03-03 13:33:10,118 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-03-03 13:33:10,118 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:10,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 55 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:10,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:10,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122422770] [2025-03-03 13:33:10,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122422770] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:10,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549918195] [2025-03-03 13:33:10,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:10,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:10,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:10,276 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) [2025-03-03 13:33:10,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-03 13:33:10,307 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-03-03 13:33:10,323 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-03-03 13:33:10,324 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:10,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:10,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-03 13:33:10,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:10,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:10,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549918195] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:10,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:10,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2025-03-03 13:33:10,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681144635] [2025-03-03 13:33:10,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:10,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-03 13:33:10,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:10,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-03 13:33:10,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2025-03-03 13:33:10,536 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) [2025-03-03 13:33:10,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:10,623 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2025-03-03 13:33:10,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-03 13:33:10,625 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 [2025-03-03 13:33:10,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:10,625 INFO L225 Difference]: With dead ends: 59 [2025-03-03 13:33:10,625 INFO L226 Difference]: Without dead ends: 57 [2025-03-03 13:33:10,625 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 [2025-03-03 13:33:10,626 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:10,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:10,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-03-03 13:33:10,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2025-03-03 13:33:10,629 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) [2025-03-03 13:33:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2025-03-03 13:33:10,629 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2025-03-03 13:33:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:10,629 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2025-03-03 13:33:10,629 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) [2025-03-03 13:33:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2025-03-03 13:33:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-03 13:33:10,630 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:10,630 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1] [2025-03-03 13:33:10,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:10,830 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 [2025-03-03 13:33:10,830 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:10,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:10,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1536953763, now seen corresponding path program 21 times [2025-03-03 13:33:10,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:10,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212549057] [2025-03-03 13:33:10,831 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:10,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:10,834 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 12 equivalence classes. [2025-03-03 13:33:10,842 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 50 of 50 statements. [2025-03-03 13:33:10,842 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-03-03 13:33:10,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 156 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:11,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:11,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212549057] [2025-03-03 13:33:11,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212549057] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:11,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519879847] [2025-03-03 13:33:11,091 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:11,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:11,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:11,093 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) [2025-03-03 13:33:11,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-03 13:33:11,125 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 12 equivalence classes. [2025-03-03 13:33:11,147 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 50 of 50 statements. [2025-03-03 13:33:11,148 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-03-03 13:33:11,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:11,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-03 13:33:11,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:11,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:11,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519879847] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:11,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:11,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 40 [2025-03-03 13:33:11,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469005364] [2025-03-03 13:33:11,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:11,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-03-03 13:33:11,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:11,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-03-03 13:33:11,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2025-03-03 13:33:11,616 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:11,710 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2025-03-03 13:33:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-03 13:33:11,710 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 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 [2025-03-03 13:33:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:11,711 INFO L225 Difference]: With dead ends: 91 [2025-03-03 13:33:11,711 INFO L226 Difference]: Without dead ends: 52 [2025-03-03 13:33:11,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 64 SyntacticMatches, 22 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2025-03-03 13:33:11,711 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:11,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-03-03 13:33:11,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-03-03 13:33:11,713 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) [2025-03-03 13:33:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2025-03-03 13:33:11,714 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2025-03-03 13:33:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:11,714 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2025-03-03 13:33:11,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2025-03-03 13:33:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-03 13:33:11,714 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:11,714 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1] [2025-03-03 13:33:11,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:11,914 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 [2025-03-03 13:33:11,915 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:11,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:11,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2134617901, now seen corresponding path program 22 times [2025-03-03 13:33:11,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:11,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100976917] [2025-03-03 13:33:11,915 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:11,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:11,919 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-03-03 13:33:11,929 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-03-03 13:33:11,929 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:11,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:12,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:12,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100976917] [2025-03-03 13:33:12,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100976917] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:12,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368681905] [2025-03-03 13:33:12,078 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:12,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:12,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:12,079 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) [2025-03-03 13:33:12,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-03 13:33:12,111 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-03-03 13:33:12,128 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-03-03 13:33:12,129 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:12,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:12,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-03 13:33:12,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:12,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:12,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368681905] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:12,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:12,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 17 [2025-03-03 13:33:12,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164999028] [2025-03-03 13:33:12,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:12,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-03 13:33:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:12,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-03 13:33:12,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2025-03-03 13:33:12,316 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) [2025-03-03 13:33:12,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:12,437 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2025-03-03 13:33:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-03 13:33:12,437 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 [2025-03-03 13:33:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:12,438 INFO L225 Difference]: With dead ends: 63 [2025-03-03 13:33:12,438 INFO L226 Difference]: Without dead ends: 61 [2025-03-03 13:33:12,438 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 [2025-03-03 13:33:12,438 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:12,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:12,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-03-03 13:33:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2025-03-03 13:33:12,442 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) [2025-03-03 13:33:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2025-03-03 13:33:12,443 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 51 [2025-03-03 13:33:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:12,443 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2025-03-03 13:33:12,443 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) [2025-03-03 13:33:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2025-03-03 13:33:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-03 13:33:12,443 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:12,443 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1] [2025-03-03 13:33:12,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-03 13:33:12,648 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 [2025-03-03 13:33:12,648 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:12,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:12,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1116945149, now seen corresponding path program 23 times [2025-03-03 13:33:12,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:12,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903427908] [2025-03-03 13:33:12,648 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:12,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:12,654 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 13 equivalence classes. [2025-03-03 13:33:12,662 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 54 of 54 statements. [2025-03-03 13:33:12,662 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-03-03 13:33:12,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:12,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:12,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903427908] [2025-03-03 13:33:12,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903427908] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:12,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841328886] [2025-03-03 13:33:12,891 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:12,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:12,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:12,893 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) [2025-03-03 13:33:12,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-03 13:33:12,926 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 13 equivalence classes. [2025-03-03 13:33:12,946 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 54 of 54 statements. [2025-03-03 13:33:12,946 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-03-03 13:33:12,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:12,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-03 13:33:12,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:13,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:13,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841328886] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:13,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:13,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 41 [2025-03-03 13:33:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188646341] [2025-03-03 13:33:13,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:13,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-03 13:33:13,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:13,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-03 13:33:13,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1236, Unknown=0, NotChecked=0, Total=1640 [2025-03-03 13:33:13,480 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 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) [2025-03-03 13:33:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:13,564 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2025-03-03 13:33:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-03 13:33:13,565 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 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) Word has length 54 [2025-03-03 13:33:13,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:13,565 INFO L225 Difference]: With dead ends: 98 [2025-03-03 13:33:13,565 INFO L226 Difference]: Without dead ends: 56 [2025-03-03 13:33:13,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 70 SyntacticMatches, 25 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=404, Invalid=1236, Unknown=0, NotChecked=0, Total=1640 [2025-03-03 13:33:13,566 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:13,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:13,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-03 13:33:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-03-03 13:33:13,568 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) [2025-03-03 13:33:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2025-03-03 13:33:13,569 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2025-03-03 13:33:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:13,569 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2025-03-03 13:33:13,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 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) [2025-03-03 13:33:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2025-03-03 13:33:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-03 13:33:13,569 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:13,570 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1] [2025-03-03 13:33:13,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-03 13:33:13,770 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 [2025-03-03 13:33:13,770 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:13,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1662191495, now seen corresponding path program 24 times [2025-03-03 13:33:13,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:13,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759079257] [2025-03-03 13:33:13,771 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:13,774 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 13 equivalence classes. [2025-03-03 13:33:13,782 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 55 of 55 statements. [2025-03-03 13:33:13,783 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-03 13:33:13,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 78 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759079257] [2025-03-03 13:33:13,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759079257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216562613] [2025-03-03 13:33:13,956 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:13,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:13,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:13,957 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) [2025-03-03 13:33:13,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-03 13:33:13,997 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 13 equivalence classes. [2025-03-03 13:33:14,020 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 55 of 55 statements. [2025-03-03 13:33:14,021 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-03 13:33:14,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:14,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-03 13:33:14,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:14,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:14,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216562613] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:14,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:14,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2025-03-03 13:33:14,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664124926] [2025-03-03 13:33:14,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:14,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-03 13:33:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:14,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-03 13:33:14,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2025-03-03 13:33:14,241 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) [2025-03-03 13:33:14,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:14,382 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2025-03-03 13:33:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-03 13:33:14,382 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 [2025-03-03 13:33:14,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:14,382 INFO L225 Difference]: With dead ends: 67 [2025-03-03 13:33:14,382 INFO L226 Difference]: Without dead ends: 65 [2025-03-03 13:33:14,383 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 [2025-03-03 13:33:14,383 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:14,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-03-03 13:33:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2025-03-03 13:33:14,385 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) [2025-03-03 13:33:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2025-03-03 13:33:14,386 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 55 [2025-03-03 13:33:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:14,386 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2025-03-03 13:33:14,386 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) [2025-03-03 13:33:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2025-03-03 13:33:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-03-03 13:33:14,386 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:14,386 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1] [2025-03-03 13:33:14,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:14,587 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 [2025-03-03 13:33:14,588 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:14,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:14,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1669712995, now seen corresponding path program 25 times [2025-03-03 13:33:14,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:14,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344281484] [2025-03-03 13:33:14,588 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:14,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:14,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-03 13:33:14,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-03 13:33:14,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:14,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 223 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:14,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344281484] [2025-03-03 13:33:14,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344281484] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:14,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078392680] [2025-03-03 13:33:14,906 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:14,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:14,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:14,908 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) [2025-03-03 13:33:14,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-03 13:33:14,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-03 13:33:14,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-03 13:33:14,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:14,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:14,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-03 13:33:14,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:15,257 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:15,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:15,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078392680] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:15,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:15,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2025-03-03 13:33:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238774553] [2025-03-03 13:33:15,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:15,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-03-03 13:33:15,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:15,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-03-03 13:33:15,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1587, Unknown=0, NotChecked=0, Total=2070 [2025-03-03 13:33:15,493 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 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) [2025-03-03 13:33:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:15,586 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2025-03-03 13:33:15,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-03 13:33:15,586 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 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) Word has length 58 [2025-03-03 13:33:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:15,587 INFO L225 Difference]: With dead ends: 105 [2025-03-03 13:33:15,587 INFO L226 Difference]: Without dead ends: 60 [2025-03-03 13:33:15,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 74 SyntacticMatches, 26 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=483, Invalid=1587, Unknown=0, NotChecked=0, Total=2070 [2025-03-03 13:33:15,588 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:15,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-03 13:33:15,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-03-03 13:33:15,590 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) [2025-03-03 13:33:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2025-03-03 13:33:15,590 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 58 [2025-03-03 13:33:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:15,590 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2025-03-03 13:33:15,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 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) [2025-03-03 13:33:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2025-03-03 13:33:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-03 13:33:15,591 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:15,591 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1] [2025-03-03 13:33:15,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:15,795 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 [2025-03-03 13:33:15,795 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:15,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:15,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1859666925, now seen corresponding path program 26 times [2025-03-03 13:33:15,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:15,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276030099] [2025-03-03 13:33:15,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:15,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:15,799 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-03-03 13:33:15,804 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-03-03 13:33:15,804 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:15,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 91 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:16,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:16,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276030099] [2025-03-03 13:33:16,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276030099] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:16,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682852484] [2025-03-03 13:33:16,006 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:16,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:16,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:16,008 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) [2025-03-03 13:33:16,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-03 13:33:16,043 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-03-03 13:33:16,059 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-03-03 13:33:16,059 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:16,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:16,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-03 13:33:16,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:16,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:16,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682852484] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:16,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:16,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2025-03-03 13:33:16,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455314556] [2025-03-03 13:33:16,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:16,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-03 13:33:16,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:16,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-03 13:33:16,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2025-03-03 13:33:16,275 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) [2025-03-03 13:33:16,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:16,387 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2025-03-03 13:33:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-03 13:33:16,388 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 [2025-03-03 13:33:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:16,388 INFO L225 Difference]: With dead ends: 71 [2025-03-03 13:33:16,388 INFO L226 Difference]: Without dead ends: 69 [2025-03-03 13:33:16,388 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 [2025-03-03 13:33:16,389 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:16,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-03-03 13:33:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2025-03-03 13:33:16,391 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) [2025-03-03 13:33:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2025-03-03 13:33:16,391 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 59 [2025-03-03 13:33:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:16,391 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2025-03-03 13:33:16,391 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) [2025-03-03 13:33:16,391 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2025-03-03 13:33:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-03 13:33:16,391 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:16,391 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1] [2025-03-03 13:33:16,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:16,592 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 [2025-03-03 13:33:16,592 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:16,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash 555052605, now seen corresponding path program 27 times [2025-03-03 13:33:16,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:16,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717517422] [2025-03-03 13:33:16,592 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:16,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:16,597 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 15 equivalence classes. [2025-03-03 13:33:16,606 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 13:33:16,606 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-03-03 13:33:16,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 261 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:16,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:16,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717517422] [2025-03-03 13:33:16,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717517422] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:16,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916894442] [2025-03-03 13:33:16,906 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:16,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:16,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:16,908 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) [2025-03-03 13:33:16,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-03 13:33:16,945 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 15 equivalence classes. [2025-03-03 13:33:16,972 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 13:33:16,972 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-03-03 13:33:16,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:16,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-03 13:33:16,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:17,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:17,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916894442] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:17,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:17,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2025-03-03 13:33:17,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209821552] [2025-03-03 13:33:17,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:17,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-03 13:33:17,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:17,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-03 13:33:17,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 13:33:17,564 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 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) [2025-03-03 13:33:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:17,654 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2025-03-03 13:33:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-03 13:33:17,655 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 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 62 [2025-03-03 13:33:17,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:17,655 INFO L225 Difference]: With dead ends: 112 [2025-03-03 13:33:17,655 INFO L226 Difference]: Without dead ends: 64 [2025-03-03 13:33:17,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 79 SyntacticMatches, 28 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 13:33:17,656 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:17,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:17,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-03-03 13:33:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2025-03-03 13:33:17,658 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) [2025-03-03 13:33:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2025-03-03 13:33:17,658 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2025-03-03 13:33:17,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:17,659 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2025-03-03 13:33:17,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 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) [2025-03-03 13:33:17,659 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2025-03-03 13:33:17,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-03 13:33:17,659 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:17,659 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1] [2025-03-03 13:33:17,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-03 13:33:17,863 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 [2025-03-03 13:33:17,863 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:17,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:17,863 INFO L85 PathProgramCache]: Analyzing trace with hash -940764985, now seen corresponding path program 28 times [2025-03-03 13:33:17,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:17,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707192913] [2025-03-03 13:33:17,863 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:17,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:17,867 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 63 statements into 2 equivalence classes. [2025-03-03 13:33:17,873 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-03-03 13:33:17,873 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:17,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:18,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:18,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707192913] [2025-03-03 13:33:18,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707192913] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:18,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608805377] [2025-03-03 13:33:18,070 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:18,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:18,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:18,072 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) [2025-03-03 13:33:18,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-03 13:33:18,116 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 63 statements into 2 equivalence classes. [2025-03-03 13:33:18,137 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-03-03 13:33:18,137 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:18,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:18,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-03 13:33:18,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:18,198 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:18,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608805377] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:18,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:18,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2025-03-03 13:33:18,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212655632] [2025-03-03 13:33:18,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:18,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-03 13:33:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:18,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-03 13:33:18,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2025-03-03 13:33:18,380 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) [2025-03-03 13:33:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:18,498 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2025-03-03 13:33:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-03 13:33:18,499 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 [2025-03-03 13:33:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:18,499 INFO L225 Difference]: With dead ends: 75 [2025-03-03 13:33:18,499 INFO L226 Difference]: Without dead ends: 73 [2025-03-03 13:33:18,499 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 [2025-03-03 13:33:18,500 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:18,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:33:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-03-03 13:33:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2025-03-03 13:33:18,502 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) [2025-03-03 13:33:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2025-03-03 13:33:18,503 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 63 [2025-03-03 13:33:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:18,503 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2025-03-03 13:33:18,503 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) [2025-03-03 13:33:18,503 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2025-03-03 13:33:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-03 13:33:18,503 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:18,504 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2025-03-03 13:33:18,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-03 13:33:18,704 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 [2025-03-03 13:33:18,704 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:18,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1667220701, now seen corresponding path program 29 times [2025-03-03 13:33:18,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:18,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928105357] [2025-03-03 13:33:18,705 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:18,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:18,709 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 66 statements into 16 equivalence classes. [2025-03-03 13:33:18,718 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 13:33:18,718 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-03-03 13:33:18,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:19,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:19,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928105357] [2025-03-03 13:33:19,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928105357] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:19,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251166143] [2025-03-03 13:33:19,083 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:19,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:19,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:19,085 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) [2025-03-03 13:33:19,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-03 13:33:19,123 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 66 statements into 16 equivalence classes. [2025-03-03 13:33:19,148 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 13:33:19,148 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-03-03 13:33:19,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:19,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-03 13:33:19,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:19,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:19,787 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:19,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251166143] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:19,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:19,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 50 [2025-03-03 13:33:19,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263563288] [2025-03-03 13:33:19,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:19,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-03-03 13:33:19,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:19,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-03-03 13:33:19,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=1857, Unknown=0, NotChecked=0, Total=2450 [2025-03-03 13:33:19,788 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 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) [2025-03-03 13:33:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:19,856 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2025-03-03 13:33:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-03 13:33:19,856 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 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 66 [2025-03-03 13:33:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:19,856 INFO L225 Difference]: With dead ends: 119 [2025-03-03 13:33:19,856 INFO L226 Difference]: Without dead ends: 68 [2025-03-03 13:33:19,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 85 SyntacticMatches, 31 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=593, Invalid=1857, Unknown=0, NotChecked=0, Total=2450 [2025-03-03 13:33:19,857 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:19,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-03-03 13:33:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-03-03 13:33:19,859 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) [2025-03-03 13:33:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2025-03-03 13:33:19,860 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 66 [2025-03-03 13:33:19,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:19,860 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2025-03-03 13:33:19,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 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) [2025-03-03 13:33:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2025-03-03 13:33:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-03 13:33:19,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:19,860 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1] [2025-03-03 13:33:19,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-03 13:33:20,060 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 [2025-03-03 13:33:20,061 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:20,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash -227571539, now seen corresponding path program 30 times [2025-03-03 13:33:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:20,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69967260] [2025-03-03 13:33:20,061 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:20,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:20,065 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 67 statements into 16 equivalence classes. [2025-03-03 13:33:20,075 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 13:33:20,076 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-03-03 13:33:20,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 120 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:20,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69967260] [2025-03-03 13:33:20,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69967260] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411958586] [2025-03-03 13:33:20,294 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:20,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:20,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:20,296 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) [2025-03-03 13:33:20,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-03 13:33:20,343 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 67 statements into 16 equivalence classes. [2025-03-03 13:33:20,372 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 13:33:20,372 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-03-03 13:33:20,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:20,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-03 13:33:20,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:20,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:20,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411958586] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:20,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:20,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 22 [2025-03-03 13:33:20,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245995359] [2025-03-03 13:33:20,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:20,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-03 13:33:20,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:20,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-03 13:33:20,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2025-03-03 13:33:20,667 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) [2025-03-03 13:33:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:20,815 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2025-03-03 13:33:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-03 13:33:20,816 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 [2025-03-03 13:33:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:20,816 INFO L225 Difference]: With dead ends: 79 [2025-03-03 13:33:20,816 INFO L226 Difference]: Without dead ends: 77 [2025-03-03 13:33:20,817 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 [2025-03-03 13:33:20,817 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:20,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:20,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-03-03 13:33:20,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2025-03-03 13:33:20,822 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) [2025-03-03 13:33:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2025-03-03 13:33:20,822 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 67 [2025-03-03 13:33:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:20,822 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2025-03-03 13:33:20,822 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) [2025-03-03 13:33:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2025-03-03 13:33:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 13:33:20,823 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:20,823 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 1, 1, 1, 1, 1] [2025-03-03 13:33:20,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-03 13:33:21,023 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 [2025-03-03 13:33:21,023 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:21,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:21,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2124484227, now seen corresponding path program 31 times [2025-03-03 13:33:21,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:21,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420993906] [2025-03-03 13:33:21,024 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:21,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:21,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 13:33:21,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 13:33:21,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:21,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 346 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:21,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:21,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420993906] [2025-03-03 13:33:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420993906] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:21,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084116689] [2025-03-03 13:33:21,397 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:21,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:21,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:21,399 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) [2025-03-03 13:33:21,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-03 13:33:21,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 13:33:21,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 13:33:21,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:21,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:21,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-03 13:33:21,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:21,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:22,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084116689] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:22,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:22,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 55 [2025-03-03 13:33:22,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893692384] [2025-03-03 13:33:22,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:22,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-03-03 13:33:22,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:22,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-03-03 13:33:22,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=2283, Unknown=0, NotChecked=0, Total=2970 [2025-03-03 13:33:22,175 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 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) [2025-03-03 13:33:22,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:22,302 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2025-03-03 13:33:22,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-03 13:33:22,303 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 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 70 [2025-03-03 13:33:22,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:22,303 INFO L225 Difference]: With dead ends: 126 [2025-03-03 13:33:22,303 INFO L226 Difference]: Without dead ends: 72 [2025-03-03 13:33:22,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 89 SyntacticMatches, 32 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=687, Invalid=2283, Unknown=0, NotChecked=0, Total=2970 [2025-03-03 13:33:22,304 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:22,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:22,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-03-03 13:33:22,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-03-03 13:33:22,309 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) [2025-03-03 13:33:22,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2025-03-03 13:33:22,310 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 70 [2025-03-03 13:33:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:22,310 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2025-03-03 13:33:22,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 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) [2025-03-03 13:33:22,310 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2025-03-03 13:33:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 13:33:22,310 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:22,310 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1] [2025-03-03 13:33:22,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-03 13:33:22,510 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 [2025-03-03 13:33:22,511 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:22,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:22,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1671927289, now seen corresponding path program 32 times [2025-03-03 13:33:22,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:22,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773913864] [2025-03-03 13:33:22,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:22,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:22,516 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-03-03 13:33:22,524 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 13:33:22,525 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:22,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 136 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:22,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:22,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773913864] [2025-03-03 13:33:22,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773913864] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:22,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475204924] [2025-03-03 13:33:22,751 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:22,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:22,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:22,753 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) [2025-03-03 13:33:22,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-03 13:33:22,794 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-03-03 13:33:22,815 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 13:33:22,815 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:22,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:22,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-03 13:33:22,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:22,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:23,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475204924] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:23,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:23,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2025-03-03 13:33:23,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173785832] [2025-03-03 13:33:23,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:23,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-03 13:33:23,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:23,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-03 13:33:23,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2025-03-03 13:33:23,115 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) [2025-03-03 13:33:23,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:23,266 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2025-03-03 13:33:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-03 13:33:23,267 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 [2025-03-03 13:33:23,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:23,267 INFO L225 Difference]: With dead ends: 83 [2025-03-03 13:33:23,267 INFO L226 Difference]: Without dead ends: 81 [2025-03-03 13:33:23,267 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 [2025-03-03 13:33:23,268 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:23,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-03-03 13:33:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2025-03-03 13:33:23,270 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) [2025-03-03 13:33:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2025-03-03 13:33:23,270 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 71 [2025-03-03 13:33:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:23,271 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2025-03-03 13:33:23,271 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) [2025-03-03 13:33:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2025-03-03 13:33:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-03 13:33:23,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:23,271 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 1, 1, 1, 1, 1] [2025-03-03 13:33:23,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-03 13:33:23,471 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 [2025-03-03 13:33:23,471 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:23,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash 350706147, now seen corresponding path program 33 times [2025-03-03 13:33:23,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:23,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6036954] [2025-03-03 13:33:23,472 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:23,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:23,478 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 74 statements into 18 equivalence classes. [2025-03-03 13:33:23,487 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 74 of 74 statements. [2025-03-03 13:33:23,487 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-03-03 13:33:23,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 393 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:23,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:23,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6036954] [2025-03-03 13:33:23,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6036954] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:23,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371597423] [2025-03-03 13:33:23,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:23,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:23,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:23,882 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) [2025-03-03 13:33:23,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-03 13:33:23,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 74 statements into 18 equivalence classes. [2025-03-03 13:33:23,957 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 74 of 74 statements. [2025-03-03 13:33:23,957 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-03-03 13:33:23,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:23,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-03 13:33:23,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:24,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:24,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371597423] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:24,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:24,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 58 [2025-03-03 13:33:24,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521326376] [2025-03-03 13:33:24,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:24,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-03-03 13:33:24,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:24,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-03-03 13:33:24,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=2543, Unknown=0, NotChecked=0, Total=3306 [2025-03-03 13:33:24,716 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 58 states, 58 states have (on average 2.293103448275862) internal successors, (133), 58 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) [2025-03-03 13:33:24,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:24,834 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2025-03-03 13:33:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-03-03 13:33:24,834 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.293103448275862) internal successors, (133), 58 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) Word has length 74 [2025-03-03 13:33:24,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:24,835 INFO L225 Difference]: With dead ends: 133 [2025-03-03 13:33:24,835 INFO L226 Difference]: Without dead ends: 76 [2025-03-03 13:33:24,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 94 SyntacticMatches, 34 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=763, Invalid=2543, Unknown=0, NotChecked=0, Total=3306 [2025-03-03 13:33:24,836 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:24,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:24,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-03-03 13:33:24,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2025-03-03 13:33:24,839 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) [2025-03-03 13:33:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2025-03-03 13:33:24,839 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2025-03-03 13:33:24,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:24,839 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2025-03-03 13:33:24,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.293103448275862) internal successors, (133), 58 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) [2025-03-03 13:33:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2025-03-03 13:33:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-03 13:33:24,839 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:24,840 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1] [2025-03-03 13:33:24,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-03 13:33:25,040 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 [2025-03-03 13:33:25,040 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:25,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1375896211, now seen corresponding path program 34 times [2025-03-03 13:33:25,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:25,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450545872] [2025-03-03 13:33:25,040 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:25,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:25,045 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 75 statements into 2 equivalence classes. [2025-03-03 13:33:25,051 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-03-03 13:33:25,051 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:25,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:25,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:25,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450545872] [2025-03-03 13:33:25,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450545872] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:25,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867635951] [2025-03-03 13:33:25,317 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:25,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:25,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:25,318 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) [2025-03-03 13:33:25,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-03 13:33:25,363 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 75 statements into 2 equivalence classes. [2025-03-03 13:33:25,384 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-03-03 13:33:25,385 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:25,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:25,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-03 13:33:25,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:25,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:25,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867635951] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:25,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:25,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 23 [2025-03-03 13:33:25,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359122442] [2025-03-03 13:33:25,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:25,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-03 13:33:25,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:25,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-03 13:33:25,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=291, Unknown=0, NotChecked=0, Total=506 [2025-03-03 13:33:25,703 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) [2025-03-03 13:33:25,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:25,857 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2025-03-03 13:33:25,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-03 13:33:25,857 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 [2025-03-03 13:33:25,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:25,857 INFO L225 Difference]: With dead ends: 87 [2025-03-03 13:33:25,857 INFO L226 Difference]: Without dead ends: 85 [2025-03-03 13:33:25,858 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 [2025-03-03 13:33:25,858 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:25,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-03-03 13:33:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2025-03-03 13:33:25,861 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) [2025-03-03 13:33:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2025-03-03 13:33:25,862 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 75 [2025-03-03 13:33:25,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:25,862 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2025-03-03 13:33:25,862 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) [2025-03-03 13:33:25,862 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2025-03-03 13:33:25,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-03 13:33:25,863 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:25,863 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 1, 1, 1, 1, 1] [2025-03-03 13:33:25,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-03 13:33:26,063 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 [2025-03-03 13:33:26,064 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:26,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1844692157, now seen corresponding path program 35 times [2025-03-03 13:33:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:26,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135380819] [2025-03-03 13:33:26,064 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:26,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:26,073 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 78 statements into 19 equivalence classes. [2025-03-03 13:33:26,084 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) and asserted 78 of 78 statements. [2025-03-03 13:33:26,084 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2025-03-03 13:33:26,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:26,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:26,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135380819] [2025-03-03 13:33:26,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135380819] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:26,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008368096] [2025-03-03 13:33:26,549 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:26,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:26,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:26,550 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) [2025-03-03 13:33:26,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-03 13:33:26,595 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 78 statements into 19 equivalence classes. [2025-03-03 13:33:26,624 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) and asserted 78 of 78 statements. [2025-03-03 13:33:26,624 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2025-03-03 13:33:26,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:26,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-03 13:33:26,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:27,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008368096] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:27,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:27,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 59 [2025-03-03 13:33:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399245479] [2025-03-03 13:33:27,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:27,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-03-03 13:33:27,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:27,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-03-03 13:33:27,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=818, Invalid=2604, Unknown=0, NotChecked=0, Total=3422 [2025-03-03 13:33:27,472 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:27,589 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2025-03-03 13:33:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-03-03 13:33:27,589 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 0 states have call successors, (0), 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 [2025-03-03 13:33:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:27,589 INFO L225 Difference]: With dead ends: 140 [2025-03-03 13:33:27,590 INFO L226 Difference]: Without dead ends: 80 [2025-03-03 13:33:27,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 100 SyntacticMatches, 37 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1692 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=818, Invalid=2604, Unknown=0, NotChecked=0, Total=3422 [2025-03-03 13:33:27,590 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:27,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-03 13:33:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2025-03-03 13:33:27,593 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) [2025-03-03 13:33:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2025-03-03 13:33:27,593 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 78 [2025-03-03 13:33:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:27,593 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2025-03-03 13:33:27,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2025-03-03 13:33:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-03 13:33:27,594 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:27,594 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1] [2025-03-03 13:33:27,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-03-03 13:33:27,794 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 [2025-03-03 13:33:27,794 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:27,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2133257401, now seen corresponding path program 36 times [2025-03-03 13:33:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:27,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465972290] [2025-03-03 13:33:27,795 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:27,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:27,800 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 79 statements into 19 equivalence classes. [2025-03-03 13:33:27,818 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 13:33:27,818 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-03-03 13:33:27,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 171 proven. 514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:28,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465972290] [2025-03-03 13:33:28,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465972290] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372401562] [2025-03-03 13:33:28,122 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:28,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:28,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:28,125 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) [2025-03-03 13:33:28,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-03 13:33:28,181 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 79 statements into 19 equivalence classes. [2025-03-03 13:33:28,215 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 13:33:28,215 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-03-03 13:33:28,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:28,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-03 13:33:28,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:28,297 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:28,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372401562] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:28,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:28,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 25 [2025-03-03 13:33:28,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756275375] [2025-03-03 13:33:28,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:28,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-03 13:33:28,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:28,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-03 13:33:28,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2025-03-03 13:33:28,627 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) [2025-03-03 13:33:28,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:28,810 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2025-03-03 13:33:28,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-03-03 13:33:28,810 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 [2025-03-03 13:33:28,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:28,811 INFO L225 Difference]: With dead ends: 91 [2025-03-03 13:33:28,811 INFO L226 Difference]: Without dead ends: 89 [2025-03-03 13:33:28,811 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 [2025-03-03 13:33:28,811 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:28,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:28,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-03-03 13:33:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2025-03-03 13:33:28,814 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) [2025-03-03 13:33:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2025-03-03 13:33:28,815 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 79 [2025-03-03 13:33:28,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:28,815 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2025-03-03 13:33:28,815 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) [2025-03-03 13:33:28,815 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2025-03-03 13:33:28,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-03 13:33:28,815 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:28,815 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 1, 1, 1, 1, 1] [2025-03-03 13:33:28,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-03-03 13:33:29,016 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 [2025-03-03 13:33:29,016 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:29,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash 760686755, now seen corresponding path program 37 times [2025-03-03 13:33:29,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:29,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223561550] [2025-03-03 13:33:29,017 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:29,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:29,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-03 13:33:29,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-03 13:33:29,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:29,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 496 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:29,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223561550] [2025-03-03 13:33:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223561550] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:29,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614647063] [2025-03-03 13:33:29,530 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:29,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:29,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:29,532 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) [2025-03-03 13:33:29,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-03 13:33:29,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-03 13:33:29,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-03 13:33:29,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:29,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:29,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-03 13:33:29,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:30,127 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:30,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614647063] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:30,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:30,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 64 [2025-03-03 13:33:30,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691445135] [2025-03-03 13:33:30,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:30,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-03-03 13:33:30,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:30,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-03-03 13:33:30,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=927, Invalid=3105, Unknown=0, NotChecked=0, Total=4032 [2025-03-03 13:33:30,514 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 64 states, 64 states have (on average 2.296875) internal successors, (147), 64 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) [2025-03-03 13:33:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:30,674 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2025-03-03 13:33:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-03-03 13:33:30,674 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.296875) internal successors, (147), 64 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 82 [2025-03-03 13:33:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:30,675 INFO L225 Difference]: With dead ends: 147 [2025-03-03 13:33:30,675 INFO L226 Difference]: Without dead ends: 84 [2025-03-03 13:33:30,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 104 SyntacticMatches, 38 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2178 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=927, Invalid=3105, Unknown=0, NotChecked=0, Total=4032 [2025-03-03 13:33:30,676 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:30,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:30,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-03-03 13:33:30,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2025-03-03 13:33:30,679 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) [2025-03-03 13:33:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2025-03-03 13:33:30,680 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2025-03-03 13:33:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:30,680 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2025-03-03 13:33:30,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.296875) internal successors, (147), 64 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) [2025-03-03 13:33:30,680 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2025-03-03 13:33:30,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-03 13:33:30,680 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:30,680 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1] [2025-03-03 13:33:30,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-03-03 13:33:30,881 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 [2025-03-03 13:33:30,881 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:30,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:30,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1736564179, now seen corresponding path program 38 times [2025-03-03 13:33:30,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:30,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764338383] [2025-03-03 13:33:30,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:30,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:30,886 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 83 statements into 2 equivalence classes. [2025-03-03 13:33:30,892 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 83 of 83 statements. [2025-03-03 13:33:30,892 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:30,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 190 proven. 571 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:31,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764338383] [2025-03-03 13:33:31,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764338383] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997598558] [2025-03-03 13:33:31,175 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:31,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:31,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:31,177 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) [2025-03-03 13:33:31,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-03-03 13:33:31,228 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 83 statements into 2 equivalence classes. [2025-03-03 13:33:31,251 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 83 of 83 statements. [2025-03-03 13:33:31,251 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:31,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:31,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-03 13:33:31,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:31,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:31,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997598558] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:31,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:31,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 26 [2025-03-03 13:33:31,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425966722] [2025-03-03 13:33:31,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:31,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-03 13:33:31,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:31,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-03 13:33:31,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2025-03-03 13:33:31,702 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) [2025-03-03 13:33:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:31,886 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2025-03-03 13:33:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-03 13:33:31,886 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 [2025-03-03 13:33:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:31,887 INFO L225 Difference]: With dead ends: 95 [2025-03-03 13:33:31,887 INFO L226 Difference]: Without dead ends: 93 [2025-03-03 13:33:31,887 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 [2025-03-03 13:33:31,887 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:31,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:31,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-03-03 13:33:31,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2025-03-03 13:33:31,890 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) [2025-03-03 13:33:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2025-03-03 13:33:31,891 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 83 [2025-03-03 13:33:31,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:31,891 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2025-03-03 13:33:31,891 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) [2025-03-03 13:33:31,891 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2025-03-03 13:33:31,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-03 13:33:31,891 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:31,891 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 1, 1, 1, 1, 1] [2025-03-03 13:33:31,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-03-03 13:33:32,092 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 [2025-03-03 13:33:32,092 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:32,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:32,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1101535235, now seen corresponding path program 39 times [2025-03-03 13:33:32,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:32,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152781817] [2025-03-03 13:33:32,092 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:32,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:32,097 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 86 statements into 21 equivalence classes. [2025-03-03 13:33:32,107 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) and asserted 86 of 86 statements. [2025-03-03 13:33:32,107 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2025-03-03 13:33:32,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 552 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:32,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:32,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152781817] [2025-03-03 13:33:32,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152781817] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:32,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866066535] [2025-03-03 13:33:32,726 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:32,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:32,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:32,728 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) [2025-03-03 13:33:32,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-03-03 13:33:32,785 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 86 statements into 21 equivalence classes. [2025-03-03 13:33:32,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) and asserted 86 of 86 statements. [2025-03-03 13:33:32,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2025-03-03 13:33:32,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:32,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-03 13:33:32,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:33,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:33,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866066535] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:33,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:33,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 67 [2025-03-03 13:33:33,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564527762] [2025-03-03 13:33:33,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:33,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-03-03 13:33:33,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:33,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-03-03 13:33:33,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1015, Invalid=3407, Unknown=0, NotChecked=0, Total=4422 [2025-03-03 13:33:33,852 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 67 states, 67 states have (on average 2.298507462686567) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:34,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:34,014 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2025-03-03 13:33:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-03 13:33:34,015 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.298507462686567) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 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 [2025-03-03 13:33:34,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:34,015 INFO L225 Difference]: With dead ends: 154 [2025-03-03 13:33:34,015 INFO L226 Difference]: Without dead ends: 88 [2025-03-03 13:33:34,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 109 SyntacticMatches, 40 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2393 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1015, Invalid=3407, Unknown=0, NotChecked=0, Total=4422 [2025-03-03 13:33:34,016 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:34,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-03-03 13:33:34,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-03-03 13:33:34,022 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) [2025-03-03 13:33:34,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2025-03-03 13:33:34,022 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2025-03-03 13:33:34,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:34,022 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2025-03-03 13:33:34,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.298507462686567) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:34,022 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2025-03-03 13:33:34,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-03 13:33:34,022 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:34,023 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1] [2025-03-03 13:33:34,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-03-03 13:33:34,223 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 [2025-03-03 13:33:34,223 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:34,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:34,223 INFO L85 PathProgramCache]: Analyzing trace with hash -487388025, now seen corresponding path program 40 times [2025-03-03 13:33:34,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:34,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965863127] [2025-03-03 13:33:34,224 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:34,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:34,228 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 87 statements into 2 equivalence classes. [2025-03-03 13:33:34,236 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-03 13:33:34,236 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:34,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:34,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965863127] [2025-03-03 13:33:34,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965863127] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:34,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577340135] [2025-03-03 13:33:34,576 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:34,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:34,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:34,578 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) [2025-03-03 13:33:34,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-03-03 13:33:34,631 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 87 statements into 2 equivalence classes. [2025-03-03 13:33:34,655 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-03-03 13:33:34,656 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:34,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:34,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-03 13:33:34,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:34,724 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:35,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577340135] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:35,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:35,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2025-03-03 13:33:35,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490195826] [2025-03-03 13:33:35,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:35,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-03 13:33:35,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:35,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-03 13:33:35,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2025-03-03 13:33:35,095 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) [2025-03-03 13:33:35,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:35,287 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2025-03-03 13:33:35,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-03-03 13:33:35,287 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 [2025-03-03 13:33:35,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:35,288 INFO L225 Difference]: With dead ends: 99 [2025-03-03 13:33:35,288 INFO L226 Difference]: Without dead ends: 97 [2025-03-03 13:33:35,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 151 SyntacticMatches, 42 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=827, Invalid=1335, Unknown=0, NotChecked=0, Total=2162 [2025-03-03 13:33:35,289 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:35,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:35,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-03-03 13:33:35,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2025-03-03 13:33:35,292 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) [2025-03-03 13:33:35,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2025-03-03 13:33:35,293 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 87 [2025-03-03 13:33:35,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:35,293 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2025-03-03 13:33:35,293 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) [2025-03-03 13:33:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2025-03-03 13:33:35,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-03 13:33:35,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:35,294 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1, 1, 1] [2025-03-03 13:33:35,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2025-03-03 13:33:35,494 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 [2025-03-03 13:33:35,494 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:35,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:35,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1508616035, now seen corresponding path program 41 times [2025-03-03 13:33:35,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:35,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345398722] [2025-03-03 13:33:35,495 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:35,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:35,499 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 90 statements into 22 equivalence classes. [2025-03-03 13:33:35,511 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) and asserted 90 of 90 statements. [2025-03-03 13:33:35,512 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2025-03-03 13:33:35,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:36,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345398722] [2025-03-03 13:33:36,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345398722] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:36,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178258578] [2025-03-03 13:33:36,113 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:36,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:36,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:36,115 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) [2025-03-03 13:33:36,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-03-03 13:33:36,170 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 90 statements into 22 equivalence classes. [2025-03-03 13:33:36,206 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) and asserted 90 of 90 statements. [2025-03-03 13:33:36,206 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2025-03-03 13:33:36,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:36,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-03 13:33:36,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:36,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:37,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178258578] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:37,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 68 [2025-03-03 13:33:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237458229] [2025-03-03 13:33:37,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:37,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2025-03-03 13:33:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:37,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2025-03-03 13:33:37,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=3477, Unknown=0, NotChecked=0, Total=4556 [2025-03-03 13:33:37,425 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:37,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:37,577 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2025-03-03 13:33:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-03 13:33:37,577 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 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 [2025-03-03 13:33:37,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:37,578 INFO L225 Difference]: With dead ends: 161 [2025-03-03 13:33:37,578 INFO L226 Difference]: Without dead ends: 92 [2025-03-03 13:33:37,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 115 SyntacticMatches, 43 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2289 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1079, Invalid=3477, Unknown=0, NotChecked=0, Total=4556 [2025-03-03 13:33:37,582 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:37,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:37,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-03-03 13:33:37,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2025-03-03 13:33:37,588 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) [2025-03-03 13:33:37,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2025-03-03 13:33:37,589 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 90 [2025-03-03 13:33:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:37,591 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2025-03-03 13:33:37,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:37,591 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2025-03-03 13:33:37,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 13:33:37,591 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:37,591 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1] [2025-03-03 13:33:37,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2025-03-03 13:33:37,792 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 [2025-03-03 13:33:37,792 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:37,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:37,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1142065427, now seen corresponding path program 42 times [2025-03-03 13:33:37,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:37,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031232441] [2025-03-03 13:33:37,792 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:37,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:37,801 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 91 statements into 22 equivalence classes. [2025-03-03 13:33:37,819 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 13:33:37,819 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-03-03 13:33:37,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 231 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:38,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:38,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031232441] [2025-03-03 13:33:38,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031232441] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:38,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177220669] [2025-03-03 13:33:38,190 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:38,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:38,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:38,192 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) [2025-03-03 13:33:38,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-03-03 13:33:38,255 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 91 statements into 22 equivalence classes. [2025-03-03 13:33:38,293 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 13:33:38,293 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-03-03 13:33:38,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:38,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-03-03 13:33:38,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:38,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:38,836 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:38,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177220669] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:38,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:38,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 28 [2025-03-03 13:33:38,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489865910] [2025-03-03 13:33:38,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:38,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-03 13:33:38,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:38,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-03 13:33:38,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2025-03-03 13:33:38,837 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) [2025-03-03 13:33:39,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:39,095 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2025-03-03 13:33:39,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-03 13:33:39,096 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 [2025-03-03 13:33:39,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:39,096 INFO L225 Difference]: With dead ends: 103 [2025-03-03 13:33:39,096 INFO L226 Difference]: Without dead ends: 101 [2025-03-03 13:33:39,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 157 SyntacticMatches, 44 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2025-03-03 13:33:39,097 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:39,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:39,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-03-03 13:33:39,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2025-03-03 13:33:39,101 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) [2025-03-03 13:33:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2025-03-03 13:33:39,101 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 91 [2025-03-03 13:33:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:39,101 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2025-03-03 13:33:39,101 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) [2025-03-03 13:33:39,101 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2025-03-03 13:33:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 13:33:39,102 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:39,102 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2025-03-03 13:33:39,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2025-03-03 13:33:39,302 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 [2025-03-03 13:33:39,302 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:39,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:39,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1460624189, now seen corresponding path program 43 times [2025-03-03 13:33:39,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:39,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000800889] [2025-03-03 13:33:39,303 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:39,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:39,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 13:33:39,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 13:33:39,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:39,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 673 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:39,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000800889] [2025-03-03 13:33:39,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000800889] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780040968] [2025-03-03 13:33:39,982 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:39,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:39,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:39,984 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) [2025-03-03 13:33:39,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-03-03 13:33:40,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 13:33:40,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 13:33:40,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:40,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:40,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-03 13:33:40,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:40,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:41,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780040968] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:41,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:41,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 73 [2025-03-03 13:33:41,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910912906] [2025-03-03 13:33:41,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:41,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-03-03 13:33:41,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:41,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-03-03 13:33:41,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=4053, Unknown=0, NotChecked=0, Total=5256 [2025-03-03 13:33:41,397 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 73 states, 73 states have (on average 2.3013698630136985) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:41,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:41,577 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2025-03-03 13:33:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-03 13:33:41,577 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.3013698630136985) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 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 [2025-03-03 13:33:41,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:41,578 INFO L225 Difference]: With dead ends: 168 [2025-03-03 13:33:41,578 INFO L226 Difference]: Without dead ends: 96 [2025-03-03 13:33:41,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 119 SyntacticMatches, 44 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2853 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1203, Invalid=4053, Unknown=0, NotChecked=0, Total=5256 [2025-03-03 13:33:41,579 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:41,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:41,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-03-03 13:33:41,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-03-03 13:33:41,584 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) [2025-03-03 13:33:41,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2025-03-03 13:33:41,584 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 94 [2025-03-03 13:33:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:41,584 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2025-03-03 13:33:41,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.3013698630136985) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2025-03-03 13:33:41,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-03 13:33:41,585 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:41,585 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1] [2025-03-03 13:33:41,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:41,785 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 [2025-03-03 13:33:41,786 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:41,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:41,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1026184647, now seen corresponding path program 44 times [2025-03-03 13:33:41,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:41,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211793815] [2025-03-03 13:33:41,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:41,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:41,793 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-03 13:33:41,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 13:33:41,801 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:41,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 253 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:42,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:42,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211793815] [2025-03-03 13:33:42,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211793815] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:42,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816691126] [2025-03-03 13:33:42,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:42,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:42,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:42,196 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) [2025-03-03 13:33:42,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-03-03 13:33:42,257 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-03 13:33:42,285 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 13:33:42,285 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:42,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:42,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-03 13:33:42,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:42,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:42,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816691126] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:42,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:42,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 29 [2025-03-03 13:33:42,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610276192] [2025-03-03 13:33:42,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:42,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-03 13:33:42,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:42,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-03 13:33:42,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2025-03-03 13:33:42,762 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) [2025-03-03 13:33:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:42,991 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2025-03-03 13:33:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-03-03 13:33:42,992 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 [2025-03-03 13:33:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:42,992 INFO L225 Difference]: With dead ends: 107 [2025-03-03 13:33:42,992 INFO L226 Difference]: Without dead ends: 105 [2025-03-03 13:33:42,993 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 [2025-03-03 13:33:42,993 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:42,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:42,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-03 13:33:42,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2025-03-03 13:33:42,998 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) [2025-03-03 13:33:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2025-03-03 13:33:42,998 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 95 [2025-03-03 13:33:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:42,998 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2025-03-03 13:33:42,999 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) [2025-03-03 13:33:42,999 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2025-03-03 13:33:42,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 13:33:42,999 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:42,999 INFO L218 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 1, 1, 1, 1, 1] [2025-03-03 13:33:43,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2025-03-03 13:33:43,199 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 [2025-03-03 13:33:43,200 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:43,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash -509553117, now seen corresponding path program 45 times [2025-03-03 13:33:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:43,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810445495] [2025-03-03 13:33:43,200 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:43,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:43,206 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 98 statements into 24 equivalence classes. [2025-03-03 13:33:43,218 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 13:33:43,219 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2025-03-03 13:33:43,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 738 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:43,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:43,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810445495] [2025-03-03 13:33:43,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810445495] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:43,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149392835] [2025-03-03 13:33:43,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:43,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:43,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:43,925 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) [2025-03-03 13:33:43,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-03-03 13:33:43,987 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 98 statements into 24 equivalence classes. [2025-03-03 13:33:44,028 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 13:33:44,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2025-03-03 13:33:44,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:44,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-03-03 13:33:44,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:44,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:45,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149392835] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:45,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:45,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 76 [2025-03-03 13:33:45,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352788646] [2025-03-03 13:33:45,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:45,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2025-03-03 13:33:45,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:45,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2025-03-03 13:33:45,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=4397, Unknown=0, NotChecked=0, Total=5700 [2025-03-03 13:33:45,366 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 76 states, 76 states have (on average 2.3026315789473686) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:45,525 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2025-03-03 13:33:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-03-03 13:33:45,525 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.3026315789473686) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 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 [2025-03-03 13:33:45,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:45,526 INFO L225 Difference]: With dead ends: 175 [2025-03-03 13:33:45,526 INFO L226 Difference]: Without dead ends: 100 [2025-03-03 13:33:45,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 124 SyntacticMatches, 46 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3098 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1303, Invalid=4397, Unknown=0, NotChecked=0, Total=5700 [2025-03-03 13:33:45,526 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:45,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:45,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-03-03 13:33:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2025-03-03 13:33:45,530 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) [2025-03-03 13:33:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2025-03-03 13:33:45,531 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2025-03-03 13:33:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:45,531 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2025-03-03 13:33:45,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.3026315789473686) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2025-03-03 13:33:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-03 13:33:45,531 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:45,531 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1] [2025-03-03 13:33:45,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:45,731 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 [2025-03-03 13:33:45,732 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:45,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash -179864659, now seen corresponding path program 46 times [2025-03-03 13:33:45,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:45,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993858665] [2025-03-03 13:33:45,732 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:45,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:45,737 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 99 statements into 2 equivalence classes. [2025-03-03 13:33:45,747 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 13:33:45,747 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:45,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:46,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:46,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993858665] [2025-03-03 13:33:46,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993858665] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:46,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257959177] [2025-03-03 13:33:46,132 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:46,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:46,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:46,136 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) [2025-03-03 13:33:46,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-03-03 13:33:46,202 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 99 statements into 2 equivalence classes. [2025-03-03 13:33:46,230 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 13:33:46,230 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:46,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:46,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-03-03 13:33:46,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:46,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257959177] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:46,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:46,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 29 [2025-03-03 13:33:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618043904] [2025-03-03 13:33:46,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:46,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-03 13:33:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:46,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-03 13:33:46,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2025-03-03 13:33:46,745 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) [2025-03-03 13:33:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:46,963 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2025-03-03 13:33:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-03-03 13:33:46,964 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 [2025-03-03 13:33:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:46,964 INFO L225 Difference]: With dead ends: 111 [2025-03-03 13:33:46,964 INFO L226 Difference]: Without dead ends: 109 [2025-03-03 13:33:46,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 172 SyntacticMatches, 48 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1052, Invalid=1704, Unknown=0, NotChecked=0, Total=2756 [2025-03-03 13:33:46,965 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:46,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-03-03 13:33:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2025-03-03 13:33:46,970 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) [2025-03-03 13:33:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2025-03-03 13:33:46,971 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 99 [2025-03-03 13:33:46,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:46,971 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2025-03-03 13:33:46,971 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) [2025-03-03 13:33:46,971 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2025-03-03 13:33:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-03-03 13:33:46,971 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:46,971 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 1, 1, 1, 1, 1] [2025-03-03 13:33:46,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2025-03-03 13:33:47,172 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 [2025-03-03 13:33:47,172 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:47,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1771970173, now seen corresponding path program 47 times [2025-03-03 13:33:47,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:47,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888933974] [2025-03-03 13:33:47,173 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:47,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:47,181 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 102 statements into 25 equivalence classes. [2025-03-03 13:33:47,195 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) and asserted 102 of 102 statements. [2025-03-03 13:33:47,195 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2025-03-03 13:33:47,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:47,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:47,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888933974] [2025-03-03 13:33:47,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888933974] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:47,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434356958] [2025-03-03 13:33:47,970 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:33:47,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:47,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:47,972 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) [2025-03-03 13:33:47,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-03-03 13:33:48,038 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 102 statements into 25 equivalence classes. [2025-03-03 13:33:48,087 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) and asserted 102 of 102 statements. [2025-03-03 13:33:48,088 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2025-03-03 13:33:48,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:48,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-03-03 13:33:48,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:48,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:49,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434356958] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:49,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:49,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 77 [2025-03-03 13:33:49,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228128451] [2025-03-03 13:33:49,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:49,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2025-03-03 13:33:49,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:49,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2025-03-03 13:33:49,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1376, Invalid=4476, Unknown=0, NotChecked=0, Total=5852 [2025-03-03 13:33:49,487 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 77 states, 77 states have (on average 2.2857142857142856) internal successors, (176), 77 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:49,667 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2025-03-03 13:33:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-03-03 13:33:49,667 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.2857142857142856) internal successors, (176), 77 states have internal predecessors, (176), 0 states have call successors, (0), 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 [2025-03-03 13:33:49,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:49,668 INFO L225 Difference]: With dead ends: 182 [2025-03-03 13:33:49,668 INFO L226 Difference]: Without dead ends: 104 [2025-03-03 13:33:49,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 130 SyntacticMatches, 49 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2976 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1376, Invalid=4476, Unknown=0, NotChecked=0, Total=5852 [2025-03-03 13:33:49,668 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 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 [2025-03-03 13:33:49,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:49,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-03 13:33:49,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2025-03-03 13:33:49,672 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) [2025-03-03 13:33:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2025-03-03 13:33:49,673 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 102 [2025-03-03 13:33:49,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:49,673 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2025-03-03 13:33:49,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.2857142857142856) internal successors, (176), 77 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:49,673 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2025-03-03 13:33:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-03 13:33:49,673 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:49,673 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1] [2025-03-03 13:33:49,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2025-03-03 13:33:49,874 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 [2025-03-03 13:33:49,874 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:49,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:49,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1459810055, now seen corresponding path program 48 times [2025-03-03 13:33:49,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:49,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465687147] [2025-03-03 13:33:49,874 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:49,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:49,880 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 25 equivalence classes. [2025-03-03 13:33:49,893 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) and asserted 103 of 103 statements. [2025-03-03 13:33:49,893 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2025-03-03 13:33:49,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 300 proven. 901 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:50,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:50,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465687147] [2025-03-03 13:33:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465687147] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:50,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234903134] [2025-03-03 13:33:50,340 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:33:50,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:50,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:50,341 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) [2025-03-03 13:33:50,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-03-03 13:33:50,414 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 25 equivalence classes. [2025-03-03 13:33:50,458 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) and asserted 103 of 103 statements. [2025-03-03 13:33:50,458 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2025-03-03 13:33:50,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:50,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-03-03 13:33:50,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:50,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:50,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:51,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234903134] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:51,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:51,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 31 [2025-03-03 13:33:51,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757518127] [2025-03-03 13:33:51,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:51,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-03 13:33:51,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:51,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-03 13:33:51,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2025-03-03 13:33:51,018 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) [2025-03-03 13:33:51,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:51,334 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2025-03-03 13:33:51,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-03-03 13:33:51,334 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 [2025-03-03 13:33:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:51,335 INFO L225 Difference]: With dead ends: 115 [2025-03-03 13:33:51,335 INFO L226 Difference]: Without dead ends: 113 [2025-03-03 13:33:51,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 178 SyntacticMatches, 50 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1136, Invalid=1944, Unknown=0, NotChecked=0, Total=3080 [2025-03-03 13:33:51,335 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:51,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:51,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-03-03 13:33:51,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2025-03-03 13:33:51,341 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) [2025-03-03 13:33:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2025-03-03 13:33:51,341 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 103 [2025-03-03 13:33:51,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:51,341 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2025-03-03 13:33:51,342 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) [2025-03-03 13:33:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2025-03-03 13:33:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-03 13:33:51,342 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:51,342 INFO L218 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 1, 1, 1, 1, 1] [2025-03-03 13:33:51,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2025-03-03 13:33:51,542 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 [2025-03-03 13:33:51,543 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:51,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1636649757, now seen corresponding path program 49 times [2025-03-03 13:33:51,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:51,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275547148] [2025-03-03 13:33:51,543 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:51,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:51,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-03 13:33:51,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-03 13:33:51,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:51,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 877 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:52,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:52,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275547148] [2025-03-03 13:33:52,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275547148] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:52,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710618899] [2025-03-03 13:33:52,422 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:33:52,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:52,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:52,423 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) [2025-03-03 13:33:52,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-03-03 13:33:52,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-03 13:33:52,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-03 13:33:52,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:33:52,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:52,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-03-03 13:33:52,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:53,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:54,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710618899] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:54,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:54,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 82 [2025-03-03 13:33:54,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675199315] [2025-03-03 13:33:54,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:54,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2025-03-03 13:33:54,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:54,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2025-03-03 13:33:54,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1515, Invalid=5127, Unknown=0, NotChecked=0, Total=6642 [2025-03-03 13:33:54,174 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 82 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:54,411 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2025-03-03 13:33:54,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-03-03 13:33:54,411 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 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 [2025-03-03 13:33:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:54,415 INFO L225 Difference]: With dead ends: 189 [2025-03-03 13:33:54,415 INFO L226 Difference]: Without dead ends: 108 [2025-03-03 13:33:54,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 134 SyntacticMatches, 50 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3618 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1515, Invalid=5127, Unknown=0, NotChecked=0, Total=6642 [2025-03-03 13:33:54,416 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:54,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 13:33:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-03-03 13:33:54,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-03-03 13:33:54,421 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) [2025-03-03 13:33:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2025-03-03 13:33:54,421 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 106 [2025-03-03 13:33:54,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:54,422 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2025-03-03 13:33:54,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:54,422 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2025-03-03 13:33:54,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-03 13:33:54,422 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:54,422 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1] [2025-03-03 13:33:54,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2025-03-03 13:33:54,622 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 [2025-03-03 13:33:54,623 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:54,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:54,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1266143123, now seen corresponding path program 50 times [2025-03-03 13:33:54,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:54,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165018372] [2025-03-03 13:33:54,623 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:54,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:54,632 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-03-03 13:33:54,641 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-03-03 13:33:54,641 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:54,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 325 proven. 976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:55,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165018372] [2025-03-03 13:33:55,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165018372] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115414051] [2025-03-03 13:33:55,118 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:33:55,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:55,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:55,120 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) [2025-03-03 13:33:55,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2025-03-03 13:33:55,195 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-03-03 13:33:55,225 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-03-03 13:33:55,225 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:33:55,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:55,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-03-03 13:33:55,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:55,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:55,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:55,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115414051] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:55,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:55,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 32 [2025-03-03 13:33:55,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054028550] [2025-03-03 13:33:55,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:55,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-03 13:33:55,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:55,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-03 13:33:55,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2025-03-03 13:33:55,863 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) [2025-03-03 13:33:56,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:56,138 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2025-03-03 13:33:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-03-03 13:33:56,140 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 [2025-03-03 13:33:56,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:56,141 INFO L225 Difference]: With dead ends: 119 [2025-03-03 13:33:56,141 INFO L226 Difference]: Without dead ends: 117 [2025-03-03 13:33:56,141 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 [2025-03-03 13:33:56,142 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 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 [2025-03-03 13:33:56,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-03 13:33:56,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2025-03-03 13:33:56,148 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) [2025-03-03 13:33:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2025-03-03 13:33:56,148 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 107 [2025-03-03 13:33:56,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:56,148 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2025-03-03 13:33:56,148 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) [2025-03-03 13:33:56,148 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2025-03-03 13:33:56,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-03 13:33:56,149 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:56,149 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 1, 1, 1, 1, 1] [2025-03-03 13:33:56,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2025-03-03 13:33:56,349 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 [2025-03-03 13:33:56,349 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:56,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:56,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1266142787, now seen corresponding path program 51 times [2025-03-03 13:33:56,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:56,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584376801] [2025-03-03 13:33:56,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:56,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:56,356 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 110 statements into 27 equivalence classes. [2025-03-03 13:33:56,368 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 110 of 110 statements. [2025-03-03 13:33:56,368 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-03-03 13:33:56,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 951 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:57,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584376801] [2025-03-03 13:33:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584376801] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750940859] [2025-03-03 13:33:57,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:33:57,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:57,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:57,237 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) [2025-03-03 13:33:57,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2025-03-03 13:33:57,310 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 110 statements into 27 equivalence classes. [2025-03-03 13:33:57,358 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 110 of 110 statements. [2025-03-03 13:33:57,358 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-03-03 13:33:57,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:57,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-03-03 13:33:57,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:33:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:58,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:33:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:58,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750940859] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:33:58,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:33:58,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 85 [2025-03-03 13:33:58,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976245209] [2025-03-03 13:33:58,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:33:58,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2025-03-03 13:33:58,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:33:58,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2025-03-03 13:33:58,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1627, Invalid=5513, Unknown=0, NotChecked=0, Total=7140 [2025-03-03 13:33:58,991 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 85 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:33:59,173 INFO L93 Difference]: Finished difference Result 196 states and 198 transitions. [2025-03-03 13:33:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-03-03 13:33:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 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 [2025-03-03 13:33:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:33:59,174 INFO L225 Difference]: With dead ends: 196 [2025-03-03 13:33:59,174 INFO L226 Difference]: Without dead ends: 112 [2025-03-03 13:33:59,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 139 SyntacticMatches, 52 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3893 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1627, Invalid=5513, Unknown=0, NotChecked=0, Total=7140 [2025-03-03 13:33:59,175 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:33:59,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:33:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-03 13:33:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2025-03-03 13:33:59,180 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) [2025-03-03 13:33:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2025-03-03 13:33:59,180 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2025-03-03 13:33:59,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:33:59,180 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2025-03-03 13:33:59,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:33:59,180 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2025-03-03 13:33:59,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-03 13:33:59,181 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:33:59,181 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1] [2025-03-03 13:33:59,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2025-03-03 13:33:59,381 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 [2025-03-03 13:33:59,381 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:33:59,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:33:59,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2063542201, now seen corresponding path program 52 times [2025-03-03 13:33:59,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:33:59,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162954507] [2025-03-03 13:33:59,382 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:59,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:33:59,388 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 111 statements into 2 equivalence classes. [2025-03-03 13:33:59,399 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 111 of 111 statements. [2025-03-03 13:33:59,399 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:33:59,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:33:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:33:59,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:33:59,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162954507] [2025-03-03 13:33:59,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162954507] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:33:59,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748578442] [2025-03-03 13:33:59,934 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:33:59,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:33:59,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:33:59,936 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) [2025-03-03 13:33:59,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2025-03-03 13:34:00,008 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 111 statements into 2 equivalence classes. [2025-03-03 13:34:00,041 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 111 of 111 statements. [2025-03-03 13:34:00,041 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:34:00,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:00,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-03-03 13:34:00,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:00,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:00,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748578442] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:00,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:00,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 32 [2025-03-03 13:34:00,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335970801] [2025-03-03 13:34:00,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:00,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-03 13:34:00,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:00,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-03 13:34:00,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=552, Unknown=0, NotChecked=0, Total=992 [2025-03-03 13:34:00,617 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) [2025-03-03 13:34:00,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:00,882 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2025-03-03 13:34:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-03 13:34:00,883 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 [2025-03-03 13:34:00,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:00,883 INFO L225 Difference]: With dead ends: 123 [2025-03-03 13:34:00,883 INFO L226 Difference]: Without dead ends: 121 [2025-03-03 13:34:00,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 193 SyntacticMatches, 54 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1304, Invalid=2118, Unknown=0, NotChecked=0, Total=3422 [2025-03-03 13:34:00,884 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:00,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:34:00,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-03-03 13:34:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2025-03-03 13:34:00,895 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) [2025-03-03 13:34:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2025-03-03 13:34:00,896 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 111 [2025-03-03 13:34:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:00,896 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2025-03-03 13:34:00,896 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) [2025-03-03 13:34:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2025-03-03 13:34:00,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-03 13:34:00,896 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:00,896 INFO L218 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 1, 1, 1, 1, 1] [2025-03-03 13:34:00,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2025-03-03 13:34:01,097 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 [2025-03-03 13:34:01,097 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:01,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:01,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1117961309, now seen corresponding path program 53 times [2025-03-03 13:34:01,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:01,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845977765] [2025-03-03 13:34:01,097 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:34:01,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:01,104 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 114 statements into 28 equivalence classes. [2025-03-03 13:34:01,122 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) and asserted 114 of 114 statements. [2025-03-03 13:34:01,123 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2025-03-03 13:34:01,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:02,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:02,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845977765] [2025-03-03 13:34:02,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845977765] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:02,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686087850] [2025-03-03 13:34:02,127 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:34:02,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:02,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:02,129 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) [2025-03-03 13:34:02,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2025-03-03 13:34:02,211 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 114 statements into 28 equivalence classes. [2025-03-03 13:34:02,264 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) and asserted 114 of 114 statements. [2025-03-03 13:34:02,265 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2025-03-03 13:34:02,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:02,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-03-03 13:34:02,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:03,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:04,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686087850] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:04,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:04,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 86 [2025-03-03 13:34:04,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843960638] [2025-03-03 13:34:04,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:04,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2025-03-03 13:34:04,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:04,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2025-03-03 13:34:04,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1709, Invalid=5601, Unknown=0, NotChecked=0, Total=7310 [2025-03-03 13:34:04,084 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 86 states, 86 states have (on average 2.2906976744186047) internal successors, (197), 86 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:04,254 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2025-03-03 13:34:04,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-03-03 13:34:04,255 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.2906976744186047) internal successors, (197), 86 states have internal predecessors, (197), 0 states have call successors, (0), 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 [2025-03-03 13:34:04,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:04,255 INFO L225 Difference]: With dead ends: 203 [2025-03-03 13:34:04,255 INFO L226 Difference]: Without dead ends: 116 [2025-03-03 13:34:04,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 145 SyntacticMatches, 55 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3753 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1709, Invalid=5601, Unknown=0, NotChecked=0, Total=7310 [2025-03-03 13:34:04,256 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:04,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:34:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-03 13:34:04,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2025-03-03 13:34:04,262 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) [2025-03-03 13:34:04,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2025-03-03 13:34:04,263 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 114 [2025-03-03 13:34:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:04,263 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2025-03-03 13:34:04,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.2906976744186047) internal successors, (197), 86 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:04,264 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2025-03-03 13:34:04,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-03 13:34:04,264 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:04,264 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1] [2025-03-03 13:34:04,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2025-03-03 13:34:04,465 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 [2025-03-03 13:34:04,466 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:04,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:04,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1129605843, now seen corresponding path program 54 times [2025-03-03 13:34:04,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:04,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106655257] [2025-03-03 13:34:04,466 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:34:04,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:04,472 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 115 statements into 28 equivalence classes. [2025-03-03 13:34:04,495 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) and asserted 115 of 115 statements. [2025-03-03 13:34:04,495 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2025-03-03 13:34:04,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 378 proven. 1135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:05,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:05,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106655257] [2025-03-03 13:34:05,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106655257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:05,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751118496] [2025-03-03 13:34:05,007 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:34:05,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:05,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:05,009 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) [2025-03-03 13:34:05,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2025-03-03 13:34:05,087 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 115 statements into 28 equivalence classes. [2025-03-03 13:34:05,136 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) and asserted 115 of 115 statements. [2025-03-03 13:34:05,136 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2025-03-03 13:34:05,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:05,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-03-03 13:34:05,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:05,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:05,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751118496] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:05,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:05,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 34 [2025-03-03 13:34:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470883325] [2025-03-03 13:34:05,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:05,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-03-03 13:34:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:05,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-03-03 13:34:05,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=649, Unknown=0, NotChecked=0, Total=1122 [2025-03-03 13:34:05,778 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) [2025-03-03 13:34:06,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:06,062 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2025-03-03 13:34:06,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-03-03 13:34:06,062 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 [2025-03-03 13:34:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:06,063 INFO L225 Difference]: With dead ends: 127 [2025-03-03 13:34:06,063 INFO L226 Difference]: Without dead ends: 125 [2025-03-03 13:34:06,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 199 SyntacticMatches, 56 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1397, Invalid=2385, Unknown=0, NotChecked=0, Total=3782 [2025-03-03 13:34:06,063 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:06,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:34:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-03-03 13:34:06,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2025-03-03 13:34:06,068 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) [2025-03-03 13:34:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2025-03-03 13:34:06,068 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 115 [2025-03-03 13:34:06,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:06,069 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2025-03-03 13:34:06,069 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) [2025-03-03 13:34:06,069 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2025-03-03 13:34:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-03 13:34:06,069 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:06,069 INFO L218 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 1, 1, 1, 1, 1] [2025-03-03 13:34:06,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2025-03-03 13:34:06,269 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 [2025-03-03 13:34:06,270 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:06,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1018063619, now seen corresponding path program 55 times [2025-03-03 13:34:06,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:06,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294501530] [2025-03-03 13:34:06,270 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:34:06,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:06,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-03 13:34:06,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-03 13:34:06,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:34:06,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1108 proven. 488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:07,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:07,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294501530] [2025-03-03 13:34:07,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294501530] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:07,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845297141] [2025-03-03 13:34:07,324 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:34:07,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:07,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:07,325 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) [2025-03-03 13:34:07,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2025-03-03 13:34:07,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-03 13:34:07,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-03 13:34:07,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:34:07,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:07,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-03-03 13:34:07,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:08,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:09,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845297141] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:09,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:09,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 91 [2025-03-03 13:34:09,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677603057] [2025-03-03 13:34:09,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:09,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2025-03-03 13:34:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:09,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2025-03-03 13:34:09,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1863, Invalid=6327, Unknown=0, NotChecked=0, Total=8190 [2025-03-03 13:34:09,334 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 91 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:09,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:09,505 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2025-03-03 13:34:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-03-03 13:34:09,505 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 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 [2025-03-03 13:34:09,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:09,506 INFO L225 Difference]: With dead ends: 210 [2025-03-03 13:34:09,506 INFO L226 Difference]: Without dead ends: 120 [2025-03-03 13:34:09,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 149 SyntacticMatches, 56 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4473 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1863, Invalid=6327, Unknown=0, NotChecked=0, Total=8190 [2025-03-03 13:34:09,506 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:09,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:34:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-03-03 13:34:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-03-03 13:34:09,511 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) [2025-03-03 13:34:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2025-03-03 13:34:09,512 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 118 [2025-03-03 13:34:09,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:09,512 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2025-03-03 13:34:09,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:09,512 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2025-03-03 13:34:09,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-03 13:34:09,513 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:09,513 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1] [2025-03-03 13:34:09,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2025-03-03 13:34:09,714 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 [2025-03-03 13:34:09,714 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:09,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash -391638649, now seen corresponding path program 56 times [2025-03-03 13:34:09,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:09,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635510121] [2025-03-03 13:34:09,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:34:09,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:09,720 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-03-03 13:34:09,731 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-03-03 13:34:09,731 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:34:09,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 406 proven. 1219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:10,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:10,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635510121] [2025-03-03 13:34:10,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635510121] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:10,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595691663] [2025-03-03 13:34:10,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:34:10,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:10,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:10,276 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) [2025-03-03 13:34:10,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2025-03-03 13:34:10,362 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-03-03 13:34:10,401 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-03-03 13:34:10,401 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:34:10,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:10,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-03-03 13:34:10,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:10,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:11,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595691663] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:11,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:11,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 35 [2025-03-03 13:34:11,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480680699] [2025-03-03 13:34:11,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:11,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-03 13:34:11,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:11,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-03 13:34:11,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=686, Unknown=0, NotChecked=0, Total=1190 [2025-03-03 13:34:11,053 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) [2025-03-03 13:34:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:11,377 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2025-03-03 13:34:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-03-03 13:34:11,377 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 [2025-03-03 13:34:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:11,378 INFO L225 Difference]: With dead ends: 131 [2025-03-03 13:34:11,378 INFO L226 Difference]: Without dead ends: 129 [2025-03-03 13:34:11,378 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 [2025-03-03 13:34:11,378 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:11,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:34:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-03-03 13:34:11,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2025-03-03 13:34:11,384 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) [2025-03-03 13:34:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2025-03-03 13:34:11,384 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 119 [2025-03-03 13:34:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:11,385 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2025-03-03 13:34:11,385 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) [2025-03-03 13:34:11,385 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2025-03-03 13:34:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-03 13:34:11,385 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:11,385 INFO L218 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 1, 1, 1, 1, 1] [2025-03-03 13:34:11,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2025-03-03 13:34:11,585 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 [2025-03-03 13:34:11,586 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:11,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:11,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2119991907, now seen corresponding path program 57 times [2025-03-03 13:34:11,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:11,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225885716] [2025-03-03 13:34:11,586 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:34:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:11,593 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 122 statements into 30 equivalence classes. [2025-03-03 13:34:11,607 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) and asserted 122 of 122 statements. [2025-03-03 13:34:11,608 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2025-03-03 13:34:11,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1191 proven. 520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:12,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:12,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225885716] [2025-03-03 13:34:12,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225885716] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:12,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733656991] [2025-03-03 13:34:12,680 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:34:12,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:12,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:12,682 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) [2025-03-03 13:34:12,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2025-03-03 13:34:12,766 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 122 statements into 30 equivalence classes. [2025-03-03 13:34:12,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) and asserted 122 of 122 statements. [2025-03-03 13:34:12,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2025-03-03 13:34:12,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:12,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-03-03 13:34:12,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:13,922 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:14,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733656991] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:14,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:14,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 94 [2025-03-03 13:34:14,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699520648] [2025-03-03 13:34:14,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:14,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2025-03-03 13:34:14,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:14,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2025-03-03 13:34:14,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1987, Invalid=6755, Unknown=0, NotChecked=0, Total=8742 [2025-03-03 13:34:14,772 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 94 states, 94 states have (on average 2.3085106382978724) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:14,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:14,985 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2025-03-03 13:34:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-03-03 13:34:14,986 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.3085106382978724) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2025-03-03 13:34:14,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:14,986 INFO L225 Difference]: With dead ends: 217 [2025-03-03 13:34:14,986 INFO L226 Difference]: Without dead ends: 124 [2025-03-03 13:34:14,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 154 SyntacticMatches, 58 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4778 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1987, Invalid=6755, Unknown=0, NotChecked=0, Total=8742 [2025-03-03 13:34:14,987 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:14,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 296 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 13:34:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-03-03 13:34:14,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2025-03-03 13:34:14,993 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) [2025-03-03 13:34:14,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2025-03-03 13:34:14,993 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2025-03-03 13:34:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:14,993 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2025-03-03 13:34:14,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.3085106382978724) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2025-03-03 13:34:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-03 13:34:14,994 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:14,994 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1] [2025-03-03 13:34:15,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2025-03-03 13:34:15,194 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 [2025-03-03 13:34:15,194 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:15,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash -475158035, now seen corresponding path program 58 times [2025-03-03 13:34:15,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:15,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634050648] [2025-03-03 13:34:15,195 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:34:15,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:15,201 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 123 statements into 2 equivalence classes. [2025-03-03 13:34:15,215 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 123 of 123 statements. [2025-03-03 13:34:15,215 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:34:15,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:15,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:15,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634050648] [2025-03-03 13:34:15,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634050648] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:15,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102665370] [2025-03-03 13:34:15,804 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:34:15,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:15,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:15,805 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) [2025-03-03 13:34:15,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2025-03-03 13:34:15,890 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 123 statements into 2 equivalence classes. [2025-03-03 13:34:15,926 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 123 of 123 statements. [2025-03-03 13:34:15,926 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:34:15,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:15,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-03-03 13:34:15,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:16,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:16,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:16,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102665370] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:16,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:16,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 35 [2025-03-03 13:34:16,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937198885] [2025-03-03 13:34:16,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:16,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-03 13:34:16,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:16,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-03 13:34:16,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=657, Unknown=0, NotChecked=0, Total=1190 [2025-03-03 13:34:16,622 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) [2025-03-03 13:34:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:16,933 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2025-03-03 13:34:16,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2025-03-03 13:34:16,934 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 [2025-03-03 13:34:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:16,934 INFO L225 Difference]: With dead ends: 135 [2025-03-03 13:34:16,934 INFO L226 Difference]: Without dead ends: 133 [2025-03-03 13:34:16,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 214 SyntacticMatches, 60 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1583, Invalid=2577, Unknown=0, NotChecked=0, Total=4160 [2025-03-03 13:34:16,935 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:16,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:34:16,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-03-03 13:34:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2025-03-03 13:34:16,941 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) [2025-03-03 13:34:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2025-03-03 13:34:16,941 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 123 [2025-03-03 13:34:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:16,941 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2025-03-03 13:34:16,941 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) [2025-03-03 13:34:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2025-03-03 13:34:16,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-03 13:34:16,942 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:16,942 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1] [2025-03-03 13:34:16,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2025-03-03 13:34:17,142 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 [2025-03-03 13:34:17,143 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:17,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash 780027965, now seen corresponding path program 59 times [2025-03-03 13:34:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:17,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778539987] [2025-03-03 13:34:17,143 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:34:17,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:17,150 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 126 statements into 31 equivalence classes. [2025-03-03 13:34:17,177 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 126 of 126 statements. [2025-03-03 13:34:17,177 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-03-03 13:34:17,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:18,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:18,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778539987] [2025-03-03 13:34:18,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778539987] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:18,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920744832] [2025-03-03 13:34:18,341 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:34:18,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:18,343 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) [2025-03-03 13:34:18,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2025-03-03 13:34:18,444 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 126 statements into 31 equivalence classes. [2025-03-03 13:34:18,509 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 126 of 126 statements. [2025-03-03 13:34:18,509 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-03-03 13:34:18,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:18,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-03 13:34:18,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:19,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:19,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:20,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920744832] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:20,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:20,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 95 [2025-03-03 13:34:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212277788] [2025-03-03 13:34:20,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:20,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2025-03-03 13:34:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:20,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2025-03-03 13:34:20,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2078, Invalid=6852, Unknown=0, NotChecked=0, Total=8930 [2025-03-03 13:34:20,667 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 95 states, 95 states have (on average 2.294736842105263) internal successors, (218), 95 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:20,880 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2025-03-03 13:34:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-03-03 13:34:20,880 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.294736842105263) internal successors, (218), 95 states have internal predecessors, (218), 0 states have call successors, (0), 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 [2025-03-03 13:34:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:20,881 INFO L225 Difference]: With dead ends: 224 [2025-03-03 13:34:20,881 INFO L226 Difference]: Without dead ends: 128 [2025-03-03 13:34:20,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 160 SyntacticMatches, 61 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4620 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2078, Invalid=6852, Unknown=0, NotChecked=0, Total=8930 [2025-03-03 13:34:20,882 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:20,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 13:34:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-03-03 13:34:20,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2025-03-03 13:34:20,887 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) [2025-03-03 13:34:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2025-03-03 13:34:20,887 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 126 [2025-03-03 13:34:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:20,887 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2025-03-03 13:34:20,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.294736842105263) internal successors, (218), 95 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2025-03-03 13:34:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-03 13:34:20,888 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:20,888 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1] [2025-03-03 13:34:20,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2025-03-03 13:34:21,088 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 [2025-03-03 13:34:21,088 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:21,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:21,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1334011193, now seen corresponding path program 60 times [2025-03-03 13:34:21,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:21,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635086353] [2025-03-03 13:34:21,089 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:34:21,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:21,095 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 127 statements into 31 equivalence classes. [2025-03-03 13:34:21,115 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 13:34:21,116 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-03-03 13:34:21,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 465 proven. 1396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:21,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:21,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635086353] [2025-03-03 13:34:21,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635086353] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:21,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815224798] [2025-03-03 13:34:21,751 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:34:21,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:21,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:21,753 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) [2025-03-03 13:34:21,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2025-03-03 13:34:21,847 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 127 statements into 31 equivalence classes. [2025-03-03 13:34:21,901 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 13:34:21,901 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-03-03 13:34:21,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:21,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-03-03 13:34:21,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:21,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:22,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815224798] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:22,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:22,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 37 [2025-03-03 13:34:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299749081] [2025-03-03 13:34:22,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:22,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-03 13:34:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:22,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-03 13:34:22,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=763, Unknown=0, NotChecked=0, Total=1332 [2025-03-03 13:34:22,681 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) [2025-03-03 13:34:23,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:23,003 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2025-03-03 13:34:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-03-03 13:34:23,003 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 [2025-03-03 13:34:23,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:23,004 INFO L225 Difference]: With dead ends: 139 [2025-03-03 13:34:23,004 INFO L226 Difference]: Without dead ends: 137 [2025-03-03 13:34:23,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 220 SyntacticMatches, 62 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1685, Invalid=2871, Unknown=0, NotChecked=0, Total=4556 [2025-03-03 13:34:23,005 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:23,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:34:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-03-03 13:34:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2025-03-03 13:34:23,011 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) [2025-03-03 13:34:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2025-03-03 13:34:23,011 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 127 [2025-03-03 13:34:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:23,011 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2025-03-03 13:34:23,011 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) [2025-03-03 13:34:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2025-03-03 13:34:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-03 13:34:23,012 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:23,012 INFO L218 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1, 1] [2025-03-03 13:34:23,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2025-03-03 13:34:23,212 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 [2025-03-03 13:34:23,212 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:23,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash -194219741, now seen corresponding path program 61 times [2025-03-03 13:34:23,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:23,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187733890] [2025-03-03 13:34:23,213 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:34:23,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:23,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-03 13:34:23,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-03 13:34:23,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:34:23,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1366 proven. 587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:24,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187733890] [2025-03-03 13:34:24,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187733890] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238914036] [2025-03-03 13:34:24,463 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:34:24,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:24,465 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) [2025-03-03 13:34:24,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2025-03-03 13:34:24,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-03 13:34:24,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-03 13:34:24,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:34:24,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:24,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-03-03 13:34:24,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:25,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:26,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238914036] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:26,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:26,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 100 [2025-03-03 13:34:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616089341] [2025-03-03 13:34:26,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:26,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2025-03-03 13:34:26,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:26,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2025-03-03 13:34:26,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2247, Invalid=7653, Unknown=0, NotChecked=0, Total=9900 [2025-03-03 13:34:26,737 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 100 states, 100 states have (on average 2.31) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:26,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:26,973 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2025-03-03 13:34:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-03-03 13:34:26,973 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.31) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 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 [2025-03-03 13:34:26,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:26,974 INFO L225 Difference]: With dead ends: 231 [2025-03-03 13:34:26,974 INFO L226 Difference]: Without dead ends: 132 [2025-03-03 13:34:26,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 164 SyntacticMatches, 62 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5418 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2247, Invalid=7653, Unknown=0, NotChecked=0, Total=9900 [2025-03-03 13:34:26,974 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:26,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 363 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 13:34:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-03-03 13:34:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2025-03-03 13:34:26,980 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) [2025-03-03 13:34:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2025-03-03 13:34:26,981 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 130 [2025-03-03 13:34:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:26,981 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2025-03-03 13:34:26,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.31) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:26,981 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2025-03-03 13:34:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-03 13:34:26,981 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:26,981 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1, 1] [2025-03-03 13:34:26,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2025-03-03 13:34:27,182 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 [2025-03-03 13:34:27,182 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:27,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash -762679635, now seen corresponding path program 62 times [2025-03-03 13:34:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:27,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074776734] [2025-03-03 13:34:27,182 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:34:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:27,190 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 131 statements into 2 equivalence classes. [2025-03-03 13:34:27,205 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 13:34:27,205 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:34:27,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 496 proven. 1489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:27,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:27,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074776734] [2025-03-03 13:34:27,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074776734] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:27,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034584457] [2025-03-03 13:34:27,877 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:34:27,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:27,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:27,879 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) [2025-03-03 13:34:27,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2025-03-03 13:34:27,974 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 131 statements into 2 equivalence classes. [2025-03-03 13:34:28,011 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 13:34:28,011 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:34:28,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:28,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-03-03 13:34:28,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:28,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:28,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034584457] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:28,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:28,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 38 [2025-03-03 13:34:28,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791468185] [2025-03-03 13:34:28,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:28,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-03-03 13:34:28,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:28,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-03-03 13:34:28,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=803, Unknown=0, NotChecked=0, Total=1406 [2025-03-03 13:34:28,783 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) [2025-03-03 13:34:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:29,124 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2025-03-03 13:34:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-03-03 13:34:29,125 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 [2025-03-03 13:34:29,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:29,125 INFO L225 Difference]: With dead ends: 143 [2025-03-03 13:34:29,125 INFO L226 Difference]: Without dead ends: 141 [2025-03-03 13:34:29,126 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 [2025-03-03 13:34:29,126 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:29,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:34:29,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-03-03 13:34:29,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2025-03-03 13:34:29,132 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) [2025-03-03 13:34:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2025-03-03 13:34:29,133 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 131 [2025-03-03 13:34:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:29,133 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2025-03-03 13:34:29,133 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) [2025-03-03 13:34:29,133 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2025-03-03 13:34:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-03 13:34:29,133 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:29,133 INFO L218 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 1, 1, 1, 1, 1] [2025-03-03 13:34:29,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2025-03-03 13:34:29,334 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 [2025-03-03 13:34:29,334 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:29,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:29,334 INFO L85 PathProgramCache]: Analyzing trace with hash -611169411, now seen corresponding path program 63 times [2025-03-03 13:34:29,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:29,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026985736] [2025-03-03 13:34:29,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:34:29,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:29,346 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 134 statements into 33 equivalence classes. [2025-03-03 13:34:29,365 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) and asserted 134 of 134 statements. [2025-03-03 13:34:29,365 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2025-03-03 13:34:29,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:30,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1458 proven. 622 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:30,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:34:30,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026985736] [2025-03-03 13:34:30,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026985736] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:34:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485694690] [2025-03-03 13:34:30,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:34:30,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:34:30,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:34:30,749 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) [2025-03-03 13:34:30,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2025-03-03 13:34:30,854 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 134 statements into 33 equivalence classes. [2025-03-03 13:34:30,925 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) and asserted 134 of 134 statements. [2025-03-03 13:34:30,925 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2025-03-03 13:34:30,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:34:30,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-03-03 13:34:30,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:34:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:32,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:34:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:34:33,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485694690] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:34:33,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:34:33,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68, 68] total 103 [2025-03-03 13:34:33,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724369613] [2025-03-03 13:34:33,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:34:33,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2025-03-03 13:34:33,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:34:33,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2025-03-03 13:34:33,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2383, Invalid=8123, Unknown=0, NotChecked=0, Total=10506 [2025-03-03 13:34:33,349 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 103 states, 103 states have (on average 2.3106796116504853) internal successors, (238), 103 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:33,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:34:33,609 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2025-03-03 13:34:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-03-03 13:34:33,610 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.3106796116504853) internal successors, (238), 103 states have internal predecessors, (238), 0 states have call successors, (0), 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 [2025-03-03 13:34:33,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:34:33,611 INFO L225 Difference]: With dead ends: 238 [2025-03-03 13:34:33,611 INFO L226 Difference]: Without dead ends: 136 [2025-03-03 13:34:33,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 169 SyntacticMatches, 64 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5753 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2383, Invalid=8123, Unknown=0, NotChecked=0, Total=10506 [2025-03-03 13:34:33,611 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:34:33,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 377 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 13:34:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-03-03 13:34:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2025-03-03 13:34:33,619 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) [2025-03-03 13:34:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2025-03-03 13:34:33,619 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2025-03-03 13:34:33,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:34:33,619 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2025-03-03 13:34:33,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.3106796116504853) internal successors, (238), 103 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:34:33,619 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2025-03-03 13:34:33,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-03 13:34:33,620 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:34:33,620 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1, 1] [2025-03-03 13:34:33,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2025-03-03 13:34:33,820 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 [2025-03-03 13:34:33,820 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:34:33,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:34:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1476555783, now seen corresponding path program 64 times [2025-03-03 13:34:33,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:34:33,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864988877] [2025-03-03 13:34:33,821 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:34:33,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:34:33,828 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 135 statements into 2 equivalence classes. [2025-03-03 13:34:33,843 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 135 of 135 statements. [2025-03-03 13:34:33,843 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:34:33,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat