./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-e2fb8be-m [2025-03-08 02:51:30,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 02:51:30,574 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 02:51:30,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 02:51:30,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 02:51:30,595 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 02:51:30,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 02:51:30,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 02:51:30,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 02:51:30,596 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 02:51:30,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 02:51:30,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 02:51:30,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 02:51:30,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 02:51:30,597 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 02:51:30,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 02:51:30,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 02:51:30,597 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 02:51:30,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 02:51:30,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 02:51:30,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 02:51:30,597 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 02:51:30,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 02:51:30,598 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:51:30,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 02:51:30,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 02:51:30,598 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 [2025-03-08 02:51:30,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 02:51:30,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 02:51:30,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 02:51:30,828 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 02:51:30,828 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 02:51:30,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_3.c [2025-03-08 02:51:31,949 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d120fae9/6b7f2aa67ec243caa0c1779a981db2c2/FLAG6e177c3de [2025-03-08 02:51:32,144 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 02:51:32,145 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_3.c [2025-03-08 02:51:32,152 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d120fae9/6b7f2aa67ec243caa0c1779a981db2c2/FLAG6e177c3de [2025-03-08 02:51:32,516 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d120fae9/6b7f2aa67ec243caa0c1779a981db2c2 [2025-03-08 02:51:32,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 02:51:32,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 02:51:32,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 02:51:32,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 02:51:32,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 02:51:32,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eda486a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32, skipping insertion in model container [2025-03-08 02:51:32,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,539 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 02:51:32,647 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] [2025-03-08 02:51:32,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:51:32,675 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 02:51:32,682 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] [2025-03-08 02:51:32,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 02:51:32,701 INFO L204 MainTranslator]: Completed translation [2025-03-08 02:51:32,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32 WrapperNode [2025-03-08 02:51:32,702 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 02:51:32,703 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 02:51:32,703 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 02:51:32,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 02:51:32,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,727 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-03-08 02:51:32,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 02:51:32,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 02:51:32,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 02:51:32,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 02:51:32,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,743 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 02:51:32,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,746 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,749 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,757 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 02:51:32,759 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 02:51:32,759 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 02:51:32,759 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 02:51:32,760 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (1/1) ... [2025-03-08 02:51:32,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 02:51:32,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:51:32,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 02:51:32,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 02:51:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 02:51:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-03-08 02:51:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-03-08 02:51:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure g [2025-03-08 02:51:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2025-03-08 02:51:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 02:51:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 02:51:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 02:51:32,862 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 02:51:32,864 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 02:51:33,016 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-03-08 02:51:33,016 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 02:51:33,023 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 02:51:33,023 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 02:51:33,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:51:33 BoogieIcfgContainer [2025-03-08 02:51:33,024 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 02:51:33,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 02:51:33,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 02:51:33,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 02:51:33,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 02:51:32" (1/3) ... [2025-03-08 02:51:33,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1840bdbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:51:33, skipping insertion in model container [2025-03-08 02:51:33,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 02:51:32" (2/3) ... [2025-03-08 02:51:33,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1840bdbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 02:51:33, skipping insertion in model container [2025-03-08 02:51:33,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 02:51:33" (3/3) ... [2025-03-08 02:51:33,030 INFO L128 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2025-03-08 02:51:33,042 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 02:51:33,045 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. [2025-03-08 02:51:33,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 02:51:33,101 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;@23046aa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 02:51:33,101 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 02:51:33,104 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) [2025-03-08 02:51:33,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 02:51:33,109 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:51:33,110 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] [2025-03-08 02:51:33,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:51:33,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:51:33,115 INFO L85 PathProgramCache]: Analyzing trace with hash -949351409, now seen corresponding path program 1 times [2025-03-08 02:51:33,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:51:33,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193292820] [2025-03-08 02:51:33,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:51:33,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:51:33,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 02:51:33,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 02:51:33,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:51:33,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 02:51:33,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:51:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193292820] [2025-03-08 02:51:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193292820] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 02:51:33,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 02:51:33,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 02:51:33,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627382868] [2025-03-08 02:51:33,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 02:51:33,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 02:51:33,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:51:33,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 02:51:33,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:51:33,344 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) [2025-03-08 02:51:33,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:51:33,380 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2025-03-08 02:51:33,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 02:51:33,383 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 [2025-03-08 02:51:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:51:33,388 INFO L225 Difference]: With dead ends: 69 [2025-03-08 02:51:33,389 INFO L226 Difference]: Without dead ends: 41 [2025-03-08 02:51:33,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 02:51:33,394 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 [2025-03-08 02:51:33,396 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] [2025-03-08 02:51:33,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-03-08 02:51:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2025-03-08 02:51:33,425 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) [2025-03-08 02:51:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2025-03-08 02:51:33,430 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 25 [2025-03-08 02:51:33,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:51:33,430 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2025-03-08 02:51:33,431 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) [2025-03-08 02:51:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2025-03-08 02:51:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-03-08 02:51:33,433 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:51:33,433 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] [2025-03-08 02:51:33,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 02:51:33,434 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:51:33,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:51:33,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1438058731, now seen corresponding path program 1 times [2025-03-08 02:51:33,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:51:33,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33597953] [2025-03-08 02:51:33,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:51:33,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:51:33,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 02:51:33,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 02:51:33,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:51:33,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 02:51:33,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:51:33,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33597953] [2025-03-08 02:51:33,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33597953] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:51:33,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433164380] [2025-03-08 02:51:33,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 02:51:33,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:51:33,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:51:33,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 02:51:33,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 02:51:33,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-08 02:51:33,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-08 02:51:33,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:51:33,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:33,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 02:51:33,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:51:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 02:51:33,705 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 02:51:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 02:51:33,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433164380] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 02:51:33,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 02:51:33,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 02:51:33,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645900362] [2025-03-08 02:51:33,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 02:51:33,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 02:51:33,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:51:33,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 02:51:33,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 02:51:33,790 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) [2025-03-08 02:51:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:51:33,869 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2025-03-08 02:51:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 02:51:33,870 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 [2025-03-08 02:51:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:51:33,871 INFO L225 Difference]: With dead ends: 67 [2025-03-08 02:51:33,871 INFO L226 Difference]: Without dead ends: 64 [2025-03-08 02:51:33,871 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 [2025-03-08 02:51:33,872 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 02:51:33,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 93 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 02:51:33,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-03-08 02:51:33,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2025-03-08 02:51:33,881 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) [2025-03-08 02:51:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2025-03-08 02:51:33,884 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 48 [2025-03-08 02:51:33,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:51:33,885 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2025-03-08 02:51:33,885 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) [2025-03-08 02:51:33,885 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2025-03-08 02:51:33,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-08 02:51:33,887 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:51:33,887 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] [2025-03-08 02:51:33,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 02:51:34,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:51:34,088 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:51:34,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:51:34,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1442197873, now seen corresponding path program 2 times [2025-03-08 02:51:34,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:51:34,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945699517] [2025-03-08 02:51:34,092 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 02:51:34,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:51:34,116 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-03-08 02:51:34,133 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 02:51:34,134 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 02:51:34,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-03-08 02:51:34,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:51:34,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945699517] [2025-03-08 02:51:34,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945699517] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:51:34,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836992720] [2025-03-08 02:51:34,318 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 02:51:34,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:51:34,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:51:34,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 02:51:34,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 02:51:34,387 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-03-08 02:51:34,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 02:51:34,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 02:51:34,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:34,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 02:51:34,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:51:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-03-08 02:51:34,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 02:51:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-03-08 02:51:34,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836992720] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 02:51:34,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 02:51:34,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-08 02:51:34,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412251584] [2025-03-08 02:51:34,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 02:51:34,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 02:51:34,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:51:34,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 02:51:34,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-08 02:51:34,717 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) [2025-03-08 02:51:34,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:51:34,854 INFO L93 Difference]: Finished difference Result 133 states and 180 transitions. [2025-03-08 02:51:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 02:51:34,855 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 [2025-03-08 02:51:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:51:34,856 INFO L225 Difference]: With dead ends: 133 [2025-03-08 02:51:34,856 INFO L226 Difference]: Without dead ends: 130 [2025-03-08 02:51:34,857 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 [2025-03-08 02:51:34,857 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 [2025-03-08 02:51:34,857 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] [2025-03-08 02:51:34,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-03-08 02:51:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2025-03-08 02:51:34,870 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) [2025-03-08 02:51:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 172 transitions. [2025-03-08 02:51:34,872 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 172 transitions. Word has length 117 [2025-03-08 02:51:34,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:51:34,872 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 172 transitions. [2025-03-08 02:51:34,873 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) [2025-03-08 02:51:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 172 transitions. [2025-03-08 02:51:34,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2025-03-08 02:51:34,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:51:34,875 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] [2025-03-08 02:51:34,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 02:51:35,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-08 02:51:35,076 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:51:35,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:51:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash 860949071, now seen corresponding path program 3 times [2025-03-08 02:51:35,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:51:35,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771094323] [2025-03-08 02:51:35,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 02:51:35,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:51:35,102 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 255 statements into 18 equivalence classes. [2025-03-08 02:51:35,155 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 245 of 255 statements. [2025-03-08 02:51:35,156 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-03-08 02:51:35,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-03-08 02:51:35,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:51:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771094323] [2025-03-08 02:51:35,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771094323] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:51:35,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218826032] [2025-03-08 02:51:35,529 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 02:51:35,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:51:35,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:51:35,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 02:51:35,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 02:51:35,599 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 255 statements into 18 equivalence classes. [2025-03-08 02:51:35,660 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 245 of 255 statements. [2025-03-08 02:51:35,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-03-08 02:51:35,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:35,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 02:51:35,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:51:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-03-08 02:51:35,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 02:51:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2025-03-08 02:51:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218826032] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 02:51:36,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 02:51:36,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-08 02:51:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100243239] [2025-03-08 02:51:36,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 02:51:36,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 02:51:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:51:36,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 02:51:36,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-08 02:51:36,221 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) [2025-03-08 02:51:36,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:51:36,470 INFO L93 Difference]: Finished difference Result 265 states and 366 transitions. [2025-03-08 02:51:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 02:51:36,470 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 [2025-03-08 02:51:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:51:36,475 INFO L225 Difference]: With dead ends: 265 [2025-03-08 02:51:36,477 INFO L226 Difference]: Without dead ends: 262 [2025-03-08 02:51:36,477 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 [2025-03-08 02:51:36,478 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 02:51:36,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 205 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 02:51:36,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-03-08 02:51:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2025-03-08 02:51:36,501 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) [2025-03-08 02:51:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 352 transitions. [2025-03-08 02:51:36,503 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 352 transitions. Word has length 255 [2025-03-08 02:51:36,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:51:36,504 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 352 transitions. [2025-03-08 02:51:36,504 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) [2025-03-08 02:51:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 352 transitions. [2025-03-08 02:51:36,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2025-03-08 02:51:36,510 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:51:36,510 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] [2025-03-08 02:51:36,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 02:51:36,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:51:36,716 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:51:36,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:51:36,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2083549647, now seen corresponding path program 4 times [2025-03-08 02:51:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:51:36,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19209097] [2025-03-08 02:51:36,718 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 02:51:36,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:51:36,756 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 531 statements into 2 equivalence classes. [2025-03-08 02:51:36,788 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 531 of 531 statements. [2025-03-08 02:51:36,788 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 02:51:36,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-03-08 02:51:37,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:51:37,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19209097] [2025-03-08 02:51:37,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19209097] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:51:37,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695144812] [2025-03-08 02:51:37,771 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 02:51:37,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:51:37,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:51:37,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 02:51:37,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 02:51:37,902 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 531 statements into 2 equivalence classes. [2025-03-08 02:51:37,996 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 531 of 531 statements. [2025-03-08 02:51:37,997 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 02:51:37,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:38,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 02:51:38,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:51:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-03-08 02:51:38,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 02:51:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8773 backedges. 0 proven. 2563 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2025-03-08 02:51:39,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695144812] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 02:51:39,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 02:51:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2025-03-08 02:51:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588107307] [2025-03-08 02:51:39,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 02:51:39,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-08 02:51:39,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:51:39,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-08 02:51:39,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 02:51:39,318 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) [2025-03-08 02:51:39,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:51:39,755 INFO L93 Difference]: Finished difference Result 529 states and 738 transitions. [2025-03-08 02:51:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-08 02:51:39,756 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 [2025-03-08 02:51:39,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:51:39,760 INFO L225 Difference]: With dead ends: 529 [2025-03-08 02:51:39,760 INFO L226 Difference]: Without dead ends: 526 [2025-03-08 02:51:39,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1085 GetRequests, 1039 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 02:51:39,761 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 [2025-03-08 02:51:39,761 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] [2025-03-08 02:51:39,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2025-03-08 02:51:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2025-03-08 02:51:39,792 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) [2025-03-08 02:51:39,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 712 transitions. [2025-03-08 02:51:39,800 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 712 transitions. Word has length 531 [2025-03-08 02:51:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:51:39,802 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 712 transitions. [2025-03-08 02:51:39,802 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) [2025-03-08 02:51:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 712 transitions. [2025-03-08 02:51:39,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2025-03-08 02:51:39,829 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:51:39,829 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] [2025-03-08 02:51:39,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 02:51:40,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:51:40,030 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:51:40,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:51:40,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1170014001, now seen corresponding path program 5 times [2025-03-08 02:51:40,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:51:40,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735823726] [2025-03-08 02:51:40,032 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 02:51:40,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:51:40,082 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1083 statements into 74 equivalence classes. [2025-03-08 02:51:40,262 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) and asserted 1083 of 1083 statements. [2025-03-08 02:51:40,262 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2025-03-08 02:51:40,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-03-08 02:51:43,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:51:43,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735823726] [2025-03-08 02:51:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735823726] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:51:43,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794515121] [2025-03-08 02:51:43,437 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 02:51:43,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:51:43,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:51:43,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 02:51:43,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 02:51:43,633 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1083 statements into 74 equivalence classes. [2025-03-08 02:51:43,976 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) and asserted 1083 of 1083 statements. [2025-03-08 02:51:43,976 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2025-03-08 02:51:43,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:51:43,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 2376 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-08 02:51:43,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:51:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-03-08 02:51:44,479 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 02:51:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 37657 backedges. 0 proven. 11431 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2025-03-08 02:51:47,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794515121] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 02:51:47,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 02:51:47,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-03-08 02:51:47,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438688533] [2025-03-08 02:51:47,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 02:51:47,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-03-08 02:51:47,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:51:47,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-03-08 02:51:47,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-08 02:51:47,038 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) [2025-03-08 02:51:48,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:51:48,024 INFO L93 Difference]: Finished difference Result 1057 states and 1482 transitions. [2025-03-08 02:51:48,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-08 02:51:48,030 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 [2025-03-08 02:51:48,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:51:48,036 INFO L225 Difference]: With dead ends: 1057 [2025-03-08 02:51:48,036 INFO L226 Difference]: Without dead ends: 1054 [2025-03-08 02:51:48,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2213 GetRequests, 2119 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-08 02:51:48,039 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 [2025-03-08 02:51:48,039 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] [2025-03-08 02:51:48,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2025-03-08 02:51:48,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1054. [2025-03-08 02:51:48,076 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) [2025-03-08 02:51:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1432 transitions. [2025-03-08 02:51:48,082 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1432 transitions. Word has length 1083 [2025-03-08 02:51:48,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:51:48,085 INFO L471 AbstractCegarLoop]: Abstraction has 1054 states and 1432 transitions. [2025-03-08 02:51:48,086 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) [2025-03-08 02:51:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1432 transitions. [2025-03-08 02:51:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2188 [2025-03-08 02:51:48,119 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:51:48,119 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] [2025-03-08 02:51:48,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 02:51:48,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:51:48,320 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:51:48,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:51:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1472782641, now seen corresponding path program 6 times [2025-03-08 02:51:48,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:51:48,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320619634] [2025-03-08 02:51:48,321 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 02:51:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:51:48,411 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 2187 statements into 148 equivalence classes. [2025-03-08 02:51:48,649 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) and asserted 2177 of 2187 statements. [2025-03-08 02:51:48,649 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) [2025-03-08 02:51:48,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:52:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-03-08 02:52:02,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 02:52:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320619634] [2025-03-08 02:52:02,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320619634] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 02:52:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209734777] [2025-03-08 02:52:02,946 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 02:52:02,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:52:02,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 02:52:02,948 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 02:52:02,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 02:52:03,286 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 2187 statements into 148 equivalence classes. [2025-03-08 02:52:04,323 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) and asserted 2177 of 2187 statements. [2025-03-08 02:52:04,323 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 147 check-sat command(s) [2025-03-08 02:52:04,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 02:52:04,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 4754 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-03-08 02:52:04,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 02:52:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-03-08 02:52:05,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 02:52:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 155905 backedges. 0 proven. 48175 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2025-03-08 02:52:13,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209734777] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 02:52:13,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 02:52:13,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-03-08 02:52:13,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952213357] [2025-03-08 02:52:13,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 02:52:13,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-03-08 02:52:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 02:52:13,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-03-08 02:52:13,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-08 02:52:13,156 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) [2025-03-08 02:52:16,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 02:52:16,348 INFO L93 Difference]: Finished difference Result 2113 states and 2970 transitions. [2025-03-08 02:52:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-03-08 02:52:16,350 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 [2025-03-08 02:52:16,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 02:52:16,364 INFO L225 Difference]: With dead ends: 2113 [2025-03-08 02:52:16,365 INFO L226 Difference]: Without dead ends: 2110 [2025-03-08 02:52:16,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4469 GetRequests, 4278 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-08 02:52:16,368 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 [2025-03-08 02:52:16,369 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] [2025-03-08 02:52:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2025-03-08 02:52:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2110. [2025-03-08 02:52:16,433 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) [2025-03-08 02:52:16,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 2872 transitions. [2025-03-08 02:52:16,443 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 2872 transitions. Word has length 2187 [2025-03-08 02:52:16,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 02:52:16,447 INFO L471 AbstractCegarLoop]: Abstraction has 2110 states and 2872 transitions. [2025-03-08 02:52:16,448 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) [2025-03-08 02:52:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 2872 transitions. [2025-03-08 02:52:16,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4396 [2025-03-08 02:52:16,548 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 02:52:16,549 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] [2025-03-08 02:52:16,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 02:52:16,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 02:52:16,750 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 02:52:16,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 02:52:16,751 INFO L85 PathProgramCache]: Analyzing trace with hash -816096561, now seen corresponding path program 7 times [2025-03-08 02:52:16,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 02:52:16,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788570428] [2025-03-08 02:52:16,751 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 02:52:16,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 02:52:16,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4395 statements into 1 equivalence classes. [2025-03-08 02:52:17,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4395 of 4395 statements. [2025-03-08 02:52:17,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 02:52:17,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat