./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 11:41:19,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 11:41:19,325 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 11:41:19,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 11:41:19,328 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 11:41:19,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 11:41:19,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 11:41:19,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 11:41:19,353 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 11:41:19,353 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 11:41:19,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 11:41:19,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 11:41:19,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 11:41:19,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 11:41:19,354 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 11:41:19,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 11:41:19,355 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 11:41:19,356 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 11:41:19,356 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 11:41:19,356 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 11:41:19,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 11:41:19,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:41:19,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 11:41:19,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 11:41:19,356 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 11:41:19,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 11:41:19,357 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 11:41:19,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 11:41:19,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 11:41:19,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 11:41:19,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 11:41:19,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 11:41:19,357 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 -> c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 [2025-03-03 11:41:19,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 11:41:19,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 11:41:19,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 11:41:19,584 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 11:41:19,584 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 11:41:19,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c [2025-03-03 11:41:20,735 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060f70da2/dffcac27e8fa49d38c95bc4acb4fc916/FLAG95589d81f [2025-03-03 11:41:20,960 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 11:41:20,960 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c [2025-03-03 11:41:20,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060f70da2/dffcac27e8fa49d38c95bc4acb4fc916/FLAG95589d81f [2025-03-03 11:41:21,313 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060f70da2/dffcac27e8fa49d38c95bc4acb4fc916 [2025-03-03 11:41:21,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 11:41:21,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 11:41:21,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 11:41:21,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 11:41:21,320 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 11:41:21,321 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,321 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693c576e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21, skipping insertion in model container [2025-03-03 11:41:21,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,331 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 11:41:21,433 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/float-benchs/zonotope_3.c[604,617] [2025-03-03 11:41:21,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:41:21,458 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 11:41:21,466 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/float-benchs/zonotope_3.c[604,617] [2025-03-03 11:41:21,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 11:41:21,483 INFO L204 MainTranslator]: Completed translation [2025-03-03 11:41:21,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21 WrapperNode [2025-03-03 11:41:21,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 11:41:21,486 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 11:41:21,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 11:41:21,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 11:41:21,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,509 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-03-03 11:41:21,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 11:41:21,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 11:41:21,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 11:41:21,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 11:41:21,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,519 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,530 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 11:41:21,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,534 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 11:41:21,537 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 11:41:21,537 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 11:41:21,537 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 11:41:21,538 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (1/1) ... [2025-03-03 11:41:21,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 11:41:21,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:41:21,564 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 11:41:21,566 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 11:41:21,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 11:41:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-03-03 11:41:21,582 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-03-03 11:41:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure g [2025-03-03 11:41:21,582 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2025-03-03 11:41:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 11:41:21,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 11:41:21,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 11:41:21,628 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 11:41:21,630 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 11:41:21,747 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-03-03 11:41:21,747 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 11:41:21,753 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 11:41:21,753 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 11:41:21,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:41:21 BoogieIcfgContainer [2025-03-03 11:41:21,753 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 11:41:21,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 11:41:21,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 11:41:21,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 11:41:21,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:41:21" (1/3) ... [2025-03-03 11:41:21,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330c02f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:41:21, skipping insertion in model container [2025-03-03 11:41:21,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:41:21" (2/3) ... [2025-03-03 11:41:21,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330c02f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:41:21, skipping insertion in model container [2025-03-03 11:41:21,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:41:21" (3/3) ... [2025-03-03 11:41:21,760 INFO L128 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2025-03-03 11:41:21,769 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 11:41:21,771 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zonotope_3.c that has 3 procedures, 34 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 11:41:21,801 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 11:41:21,809 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;@522ce3d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 11:41:21,809 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 11:41:21,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-03 11:41:21,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-03 11:41:21,816 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:41:21,817 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:41:21,817 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:41:21,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:41:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash -949351409, now seen corresponding path program 1 times [2025-03-03 11:41:21,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:41:21,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952145786] [2025-03-03 11:41:21,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:41:21,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:41:21,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-03 11:41:21,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-03 11:41:21,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:41:21,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-03 11:41:21,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:41:21,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952145786] [2025-03-03 11:41:21,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952145786] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 11:41:21,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 11:41:21,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 11:41:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516980652] [2025-03-03 11:41:21,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 11:41:21,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 11:41:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:41:21,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 11:41:21,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:41:21,985 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-03 11:41:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:41:22,017 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2025-03-03 11:41:22,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 11:41:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2025-03-03 11:41:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:41:22,024 INFO L225 Difference]: With dead ends: 69 [2025-03-03 11:41:22,024 INFO L226 Difference]: Without dead ends: 41 [2025-03-03 11:41:22,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 11:41:22,028 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 11:41:22,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 11:41:22,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-03-03 11:41:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2025-03-03 11:41:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-03 11:41:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2025-03-03 11:41:22,055 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 25 [2025-03-03 11:41:22,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:41:22,056 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2025-03-03 11:41:22,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-03 11:41:22,056 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2025-03-03 11:41:22,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-03 11:41:22,058 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:41:22,058 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:41:22,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 11:41:22,059 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:41:22,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:41:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1438058731, now seen corresponding path program 1 times [2025-03-03 11:41:22,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:41:22,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203444969] [2025-03-03 11:41:22,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:41:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:41:22,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-03 11:41:22,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-03 11:41:22,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:41:22,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 11:41:22,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:41:22,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203444969] [2025-03-03 11:41:22,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203444969] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:41:22,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313813785] [2025-03-03 11:41:22,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 11:41:22,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:41:22,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:41:22,200 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 11:41:22,202 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 11:41:22,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-03 11:41:22,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-03 11:41:22,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:41:22,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:22,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 11:41:22,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:41:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 11:41:22,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 11:41:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 11:41:22,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313813785] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 11:41:22,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 11:41:22,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-03 11:41:22,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735237282] [2025-03-03 11:41:22,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 11:41:22,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 11:41:22,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:41:22,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 11:41:22,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 11:41:22,451 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-03 11:41:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:41:22,500 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2025-03-03 11:41:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 11:41:22,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 48 [2025-03-03 11:41:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:41:22,502 INFO L225 Difference]: With dead ends: 67 [2025-03-03 11:41:22,502 INFO L226 Difference]: Without dead ends: 64 [2025-03-03 11:41:22,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 11:41:22,503 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 11:41:22,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 93 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 11:41:22,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-03-03 11:41:22,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2025-03-03 11:41:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-03 11:41:22,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2025-03-03 11:41:22,515 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 48 [2025-03-03 11:41:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:41:22,515 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2025-03-03 11:41:22,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-03 11:41:22,516 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2025-03-03 11:41:22,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-03 11:41:22,521 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:41:22,521 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:41:22,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 11:41:22,722 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 11:41:22,722 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:41:22,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:41:22,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1442197873, now seen corresponding path program 2 times [2025-03-03 11:41:22,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:41:22,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476296144] [2025-03-03 11:41:22,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 11:41:22,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:41:22,752 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-03-03 11:41:22,772 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-03-03 11:41:22,772 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 11:41:22,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-03-03 11:41:22,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:41:22,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476296144] [2025-03-03 11:41:22,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476296144] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:41:22,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803912633] [2025-03-03 11:41:22,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 11:41:22,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:41:22,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:41:22,986 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 11:41:22,988 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 11:41:23,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-03-03 11:41:23,071 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-03-03 11:41:23,072 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 11:41:23,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:23,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 11:41:23,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:41:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-03-03 11:41:23,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 11:41:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-03-03 11:41:23,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803912633] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 11:41:23,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 11:41:23,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-03 11:41:23,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338409720] [2025-03-03 11:41:23,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 11:41:23,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 11:41:23,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:41:23,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 11:41:23,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-03 11:41:23,324 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2025-03-03 11:41:23,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:41:23,428 INFO L93 Difference]: Finished difference Result 133 states and 180 transitions. [2025-03-03 11:41:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 11:41:23,428 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 117 [2025-03-03 11:41:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:41:23,431 INFO L225 Difference]: With dead ends: 133 [2025-03-03 11:41:23,431 INFO L226 Difference]: Without dead ends: 130 [2025-03-03 11:41:23,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-03 11:41:23,432 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 11:41:23,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 123 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 11:41:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-03-03 11:41:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2025-03-03 11:41:23,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-03 11:41:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2025-03-03 11:41:23,446 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 117 [2025-03-03 11:41:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:41:23,447 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2025-03-03 11:41:23,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2025-03-03 11:41:23,447 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2025-03-03 11:41:23,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2025-03-03 11:41:23,449 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:41:23,449 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:41:23,456 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 11:41:23,650 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 11:41:23,650 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:41:23,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:41:23,651 INFO L85 PathProgramCache]: Analyzing trace with hash 860949071, now seen corresponding path program 3 times [2025-03-03 11:41:23,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:41:23,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102722206] [2025-03-03 11:41:23,651 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 11:41:23,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:41:23,675 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 255 statements into 18 equivalence classes. [2025-03-03 11:41:23,709 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 245 of 255 statements. [2025-03-03 11:41:23,709 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-03-03 11:41:23,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-03-03 11:41:24,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:41:24,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102722206] [2025-03-03 11:41:24,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102722206] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:41:24,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893665833] [2025-03-03 11:41:24,027 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 11:41:24,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:41:24,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:41:24,029 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 11:41:24,031 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 11:41:24,105 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 255 statements into 18 equivalence classes. [2025-03-03 11:41:24,163 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 245 of 255 statements. [2025-03-03 11:41:24,164 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-03-03 11:41:24,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:24,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 11:41:24,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:41:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-03-03 11:41:24,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 11:41:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-03-03 11:41:24,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893665833] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 11:41:24,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 11:41:24,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-03 11:41:24,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109344384] [2025-03-03 11:41:24,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 11:41:24,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-03 11:41:24,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:41:24,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-03 11:41:24,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-03 11:41:24,726 INFO L87 Difference]: Start difference. First operand 130 states and 172 transitions. Second operand has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2025-03-03 11:41:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:41:24,906 INFO L93 Difference]: Finished difference Result 265 states and 366 transitions. [2025-03-03 11:41:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-03 11:41:24,907 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) Word has length 255 [2025-03-03 11:41:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:41:24,909 INFO L225 Difference]: With dead ends: 265 [2025-03-03 11:41:24,909 INFO L226 Difference]: Without dead ends: 262 [2025-03-03 11:41:24,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-03 11:41:24,910 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 11:41:24,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 205 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 11:41:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-03-03 11:41:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2025-03-03 11:41:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 167 states have (on average 1.0059880239520957) internal successors, (168), 167 states have internal predecessors, (168), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 11:41:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 352 transitions. [2025-03-03 11:41:24,937 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 352 transitions. Word has length 255 [2025-03-03 11:41:24,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:41:24,938 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 352 transitions. [2025-03-03 11:41:24,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2025-03-03 11:41:24,938 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 352 transitions. [2025-03-03 11:41:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2025-03-03 11:41:24,946 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:41:24,947 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:41:24,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 11:41:25,147 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 11:41:25,148 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:41:25,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:41:25,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2083549647, now seen corresponding path program 4 times [2025-03-03 11:41:25,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:41:25,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89637351] [2025-03-03 11:41:25,149 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 11:41:25,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:41:25,183 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 531 statements into 2 equivalence classes. [2025-03-03 11:41:25,210 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 531 of 531 statements. [2025-03-03 11:41:25,210 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 11:41:25,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-03-03 11:41:26,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:41:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89637351] [2025-03-03 11:41:26,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89637351] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:41:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246647221] [2025-03-03 11:41:26,020 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 11:41:26,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:41:26,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:41:26,022 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 11:41:26,024 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 11:41:26,127 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 531 statements into 2 equivalence classes. [2025-03-03 11:41:26,219 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 531 of 531 statements. [2025-03-03 11:41:26,219 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 11:41:26,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:26,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-03 11:41:26,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:41:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-03-03 11:41:26,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 11:41:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-03-03 11:41:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246647221] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 11:41:27,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 11:41:27,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2025-03-03 11:41:27,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93699820] [2025-03-03 11:41:27,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 11:41:27,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-03 11:41:27,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:41:27,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-03 11:41:27,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-03 11:41:27,560 INFO L87 Difference]: Start difference. First operand 262 states and 352 transitions. Second operand has 48 states, 48 states have (on average 6.729166666666667) internal successors, (323), 48 states have internal predecessors, (323), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2025-03-03 11:41:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:41:27,991 INFO L93 Difference]: Finished difference Result 529 states and 738 transitions. [2025-03-03 11:41:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-03 11:41:27,992 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.729166666666667) internal successors, (323), 48 states have internal predecessors, (323), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) Word has length 531 [2025-03-03 11:41:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:41:27,995 INFO L225 Difference]: With dead ends: 529 [2025-03-03 11:41:27,996 INFO L226 Difference]: Without dead ends: 526 [2025-03-03 11:41:27,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1085 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-03 11:41:27,997 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 11:41:27,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 347 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 11:41:28,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2025-03-03 11:41:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2025-03-03 11:41:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 335 states have (on average 1.0029850746268656) internal successors, (336), 335 states have internal predecessors, (336), 188 states have call successors, (188), 2 states have call predecessors, (188), 2 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2025-03-03 11:41:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 712 transitions. [2025-03-03 11:41:28,030 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 712 transitions. Word has length 531 [2025-03-03 11:41:28,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:41:28,031 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 712 transitions. [2025-03-03 11:41:28,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.729166666666667) internal successors, (323), 48 states have internal predecessors, (323), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2025-03-03 11:41:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 712 transitions. [2025-03-03 11:41:28,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2025-03-03 11:41:28,053 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:41:28,054 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:41:28,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 11:41:28,254 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 11:41:28,255 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:41:28,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:41:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1170014001, now seen corresponding path program 5 times [2025-03-03 11:41:28,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:41:28,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849000966] [2025-03-03 11:41:28,256 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 11:41:28,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:41:28,309 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1083 statements into 74 equivalence classes. [2025-03-03 11:41:28,451 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) and asserted 1083 of 1083 statements. [2025-03-03 11:41:28,451 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2025-03-03 11:41:28,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-03-03 11:41:31,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:41:31,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849000966] [2025-03-03 11:41:31,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849000966] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:41:31,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309912171] [2025-03-03 11:41:31,373 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 11:41:31,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:41:31,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:41:31,375 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 11:41:31,377 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 11:41:31,554 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1083 statements into 74 equivalence classes. [2025-03-03 11:41:31,871 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) and asserted 1083 of 1083 statements. [2025-03-03 11:41:31,871 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2025-03-03 11:41:31,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:31,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 2376 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-03 11:41:31,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:41:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-03-03 11:41:32,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 11:41:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-03-03 11:41:34,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309912171] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 11:41:34,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 11:41:34,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-03-03 11:41:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390588630] [2025-03-03 11:41:34,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 11:41:34,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-03-03 11:41:34,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:41:34,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-03-03 11:41:34,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-03 11:41:34,989 INFO L87 Difference]: Start difference. First operand 526 states and 712 transitions. Second operand has 96 states, 96 states have (on average 6.864583333333333) internal successors, (659), 96 states have internal predecessors, (659), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2025-03-03 11:41:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:41:35,913 INFO L93 Difference]: Finished difference Result 1057 states and 1482 transitions. [2025-03-03 11:41:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-03 11:41:35,914 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 6.864583333333333) internal successors, (659), 96 states have internal predecessors, (659), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) Word has length 1083 [2025-03-03 11:41:35,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:41:35,919 INFO L225 Difference]: With dead ends: 1057 [2025-03-03 11:41:35,919 INFO L226 Difference]: Without dead ends: 1054 [2025-03-03 11:41:35,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2213 GetRequests, 2119 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-03 11:41:35,922 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 11:41:35,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 631 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 11:41:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2025-03-03 11:41:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1054. [2025-03-03 11:41:35,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 671 states have (on average 1.0014903129657229) internal successors, (672), 671 states have internal predecessors, (672), 380 states have call successors, (380), 2 states have call predecessors, (380), 2 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-03-03 11:41:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1432 transitions. [2025-03-03 11:41:35,955 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1432 transitions. Word has length 1083 [2025-03-03 11:41:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:41:35,956 INFO L471 AbstractCegarLoop]: Abstraction has 1054 states and 1432 transitions. [2025-03-03 11:41:35,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 6.864583333333333) internal successors, (659), 96 states have internal predecessors, (659), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2025-03-03 11:41:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1432 transitions. [2025-03-03 11:41:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2188 [2025-03-03 11:41:35,978 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:41:35,978 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:41:35,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 11:41:36,179 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 11:41:36,179 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:41:36,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:41:36,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1472782641, now seen corresponding path program 6 times [2025-03-03 11:41:36,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:41:36,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923895827] [2025-03-03 11:41:36,180 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 11:41:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:41:36,265 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 2187 statements into 148 equivalence classes. [2025-03-03 11:41:36,558 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) and asserted 2177 of 2187 statements. [2025-03-03 11:41:36,558 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) [2025-03-03 11:41:36,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-03-03 11:41:51,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 11:41:51,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923895827] [2025-03-03 11:41:51,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923895827] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 11:41:51,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324588894] [2025-03-03 11:41:51,108 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 11:41:51,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 11:41:51,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 11:41:51,114 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 11:41:51,115 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 11:41:51,448 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 2187 statements into 148 equivalence classes. [2025-03-03 11:41:52,434 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) and asserted 2177 of 2187 statements. [2025-03-03 11:41:52,434 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) [2025-03-03 11:41:52,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 11:41:52,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 4754 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-03-03 11:41:52,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 11:41:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-03-03 11:41:53,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 11:42:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-03-03 11:42:01,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324588894] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 11:42:01,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 11:42:01,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-03-03 11:42:01,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356247671] [2025-03-03 11:42:01,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 11:42:01,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-03-03 11:42:01,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 11:42:01,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-03-03 11:42:01,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-03 11:42:01,272 INFO L87 Difference]: Start difference. First operand 1054 states and 1432 transitions. Second operand has 193 states, 193 states have (on average 6.937823834196891) internal successors, (1339), 193 states have internal predecessors, (1339), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2025-03-03 11:42:04,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 11:42:04,523 INFO L93 Difference]: Finished difference Result 2113 states and 2970 transitions. [2025-03-03 11:42:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-03-03 11:42:04,525 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 6.937823834196891) internal successors, (1339), 193 states have internal predecessors, (1339), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) Word has length 2187 [2025-03-03 11:42:04,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 11:42:04,537 INFO L225 Difference]: With dead ends: 2113 [2025-03-03 11:42:04,537 INFO L226 Difference]: Without dead ends: 2110 [2025-03-03 11:42:04,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4469 GetRequests, 4278 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-03 11:42:04,542 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-03 11:42:04,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1067 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-03 11:42:04,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2025-03-03 11:42:04,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2110. [2025-03-03 11:42:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 1343 states have (on average 1.0007446016381236) internal successors, (1344), 1343 states have internal predecessors, (1344), 764 states have call successors, (764), 2 states have call predecessors, (764), 2 states have return successors, (764), 764 states have call predecessors, (764), 764 states have call successors, (764) [2025-03-03 11:42:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 2872 transitions. [2025-03-03 11:42:04,606 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 2872 transitions. Word has length 2187 [2025-03-03 11:42:04,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 11:42:04,612 INFO L471 AbstractCegarLoop]: Abstraction has 2110 states and 2872 transitions. [2025-03-03 11:42:04,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 6.937823834196891) internal successors, (1339), 193 states have internal predecessors, (1339), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2025-03-03 11:42:04,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 2872 transitions. [2025-03-03 11:42:04,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4396 [2025-03-03 11:42:04,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 11:42:04,721 INFO L218 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 11:42:04,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 11:42:04,921 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 11:42:04,921 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 11:42:04,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 11:42:04,923 INFO L85 PathProgramCache]: Analyzing trace with hash -816096561, now seen corresponding path program 7 times [2025-03-03 11:42:04,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 11:42:04,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022326079] [2025-03-03 11:42:04,923 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 11:42:04,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 11:42:05,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4395 statements into 1 equivalence classes. [2025-03-03 11:42:05,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4395 of 4395 statements. [2025-03-03 11:42:05,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 11:42:05,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat