./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_9.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/loops-crafted-1/mono-crafted_9.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 c6e51ff8c9564e836040d6d35580386edd1169ec75010fdbf7c4eee4bc9fc430 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 04:47:44,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 04:47:44,201 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 04:47:44,205 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 04:47:44,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 04:47:44,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 04:47:44,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 04:47:44,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 04:47:44,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 04:47:44,226 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 04:47:44,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 04:47:44,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 04:47:44,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 04:47:44,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 04:47:44,226 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 04:47:44,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 04:47:44,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 04:47:44,227 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 04:47:44,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 04:47:44,228 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 04:47:44,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 04:47:44,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:47:44,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 04:47:44,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 04:47:44,229 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 04:47:44,229 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 04:47:44,229 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 04:47:44,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 04:47:44,229 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 04:47:44,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 04:47:44,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 04:47:44,230 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 04:47:44,230 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 -> c6e51ff8c9564e836040d6d35580386edd1169ec75010fdbf7c4eee4bc9fc430 [2025-03-08 04:47:44,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 04:47:44,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 04:47:44,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 04:47:44,471 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 04:47:44,471 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 04:47:44,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_9.c [2025-03-08 04:47:45,598 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b49e586fd/293ff99716db4a39bdfda00134933577/FLAG3a426c7b2 [2025-03-08 04:47:45,795 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 04:47:45,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_9.c [2025-03-08 04:47:45,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b49e586fd/293ff99716db4a39bdfda00134933577/FLAG3a426c7b2 [2025-03-08 04:47:45,851 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b49e586fd/293ff99716db4a39bdfda00134933577 [2025-03-08 04:47:45,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 04:47:45,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 04:47:45,858 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 04:47:45,858 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 04:47:45,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 04:47:45,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:47:45" (1/1) ... [2025-03-08 04:47:45,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c499a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:45, skipping insertion in model container [2025-03-08 04:47:45,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:47:45" (1/1) ... [2025-03-08 04:47:45,874 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 04:47:45,969 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/loops-crafted-1/mono-crafted_9.c[318,331] [2025-03-08 04:47:45,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:47:45,987 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 04:47:45,995 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/loops-crafted-1/mono-crafted_9.c[318,331] [2025-03-08 04:47:45,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:47:46,007 INFO L204 MainTranslator]: Completed translation [2025-03-08 04:47:46,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46 WrapperNode [2025-03-08 04:47:46,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 04:47:46,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 04:47:46,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 04:47:46,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 04:47:46,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,029 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2025-03-08 04:47:46,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 04:47:46,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 04:47:46,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 04:47:46,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 04:47:46,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,036 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,042 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 04:47:46,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,043 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 04:47:46,045 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 04:47:46,045 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 04:47:46,045 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 04:47:46,046 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (1/1) ... [2025-03-08 04:47:46,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:47:46,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:47:46,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 04:47:46,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 04:47:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 04:47:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 04:47:46,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 04:47:46,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 04:47:46,118 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 04:47:46,119 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 04:47:46,184 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-03-08 04:47:46,184 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 04:47:46,189 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 04:47:46,189 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 04:47:46,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:47:46 BoogieIcfgContainer [2025-03-08 04:47:46,189 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 04:47:46,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 04:47:46,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 04:47:46,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 04:47:46,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:47:45" (1/3) ... [2025-03-08 04:47:46,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394a305a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:47:46, skipping insertion in model container [2025-03-08 04:47:46,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:47:46" (2/3) ... [2025-03-08 04:47:46,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394a305a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:47:46, skipping insertion in model container [2025-03-08 04:47:46,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:47:46" (3/3) ... [2025-03-08 04:47:46,195 INFO L128 eAbstractionObserver]: Analyzing ICFG mono-crafted_9.c [2025-03-08 04:47:46,204 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 04:47:46,205 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mono-crafted_9.c that has 1 procedures, 11 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 04:47:46,239 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 04:47:46,247 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;@729043f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 04:47:46,248 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 04:47:46,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-08 04:47:46,254 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:47:46,255 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-08 04:47:46,255 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:47:46,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:47:46,260 INFO L85 PathProgramCache]: Analyzing trace with hash 40045990, now seen corresponding path program 1 times [2025-03-08 04:47:46,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:47:46,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826815389] [2025-03-08 04:47:46,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:47:46,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:47:46,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-08 04:47:46,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-08 04:47:46,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:47:46,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:47:46,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:47:46,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826815389] [2025-03-08 04:47:46,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826815389] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:47:46,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 04:47:46,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 04:47:46,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079789515] [2025-03-08 04:47:46,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:47:46,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 04:47:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:47:46,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 04:47:46,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 04:47:46,428 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:47:46,450 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2025-03-08 04:47:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 04:47:46,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-08 04:47:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:47:46,456 INFO L225 Difference]: With dead ends: 22 [2025-03-08 04:47:46,456 INFO L226 Difference]: Without dead ends: 9 [2025-03-08 04:47:46,457 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 04:47:46,459 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:47:46,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:47:46,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-03-08 04:47:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2025-03-08 04:47:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2025-03-08 04:47:46,477 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2025-03-08 04:47:46,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:47:46,477 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2025-03-08 04:47:46,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2025-03-08 04:47:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 04:47:46,478 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:47:46,478 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:47:46,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 04:47:46,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:47:46,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:47:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash -167646296, now seen corresponding path program 1 times [2025-03-08 04:47:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:47:46,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108026029] [2025-03-08 04:47:46,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:47:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:47:46,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 04:47:46,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 04:47:46,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:47:46,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:47:46,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:47:46,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108026029] [2025-03-08 04:47:46,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108026029] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:47:46,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631243147] [2025-03-08 04:47:46,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:47:46,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:46,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:47:46,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:47:46,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 04:47:46,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 04:47:46,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 04:47:46,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:47:46,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:46,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 04:47:46,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:47:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:47:46,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:47:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:47:46,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631243147] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:47:46,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:47:46,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 04:47:46,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177056175] [2025-03-08 04:47:46,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:47:46,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 04:47:46,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:47:46,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 04:47:46,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 04:47:46,626 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:47:46,660 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2025-03-08 04:47:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 04:47:46,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-08 04:47:46,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:47:46,661 INFO L225 Difference]: With dead ends: 19 [2025-03-08 04:47:46,661 INFO L226 Difference]: Without dead ends: 14 [2025-03-08 04:47:46,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 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 04:47:46,661 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:47:46,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:47:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-08 04:47:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-08 04:47:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-03-08 04:47:46,664 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2025-03-08 04:47:46,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:47:46,664 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-03-08 04:47:46,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:46,664 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-03-08 04:47:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 04:47:46,665 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:47:46,665 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2025-03-08 04:47:46,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 04:47:46,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:46,866 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:47:46,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:47:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash 41910188, now seen corresponding path program 1 times [2025-03-08 04:47:46,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:47:46,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280824676] [2025-03-08 04:47:46,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:47:46,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:47:46,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 04:47:46,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 04:47:46,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:47:46,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:47:46,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:47:46,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280824676] [2025-03-08 04:47:46,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280824676] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:47:46,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701032275] [2025-03-08 04:47:46,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:47:46,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:46,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:47:46,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:47:46,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 04:47:46,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 04:47:46,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 04:47:46,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:47:46,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:46,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 04:47:46,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:47:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:47:47,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:47:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:47:47,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701032275] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:47:47,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:47:47,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-08 04:47:47,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370416726] [2025-03-08 04:47:47,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:47:47,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 04:47:47,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:47:47,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 04:47:47,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-08 04:47:47,056 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:47,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:47:47,088 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2025-03-08 04:47:47,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 04:47:47,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-08 04:47:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:47:47,089 INFO L225 Difference]: With dead ends: 30 [2025-03-08 04:47:47,089 INFO L226 Difference]: Without dead ends: 22 [2025-03-08 04:47:47,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-08 04:47:47,090 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:47:47,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:47:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-08 04:47:47,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-03-08 04:47:47,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2025-03-08 04:47:47,095 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2025-03-08 04:47:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:47:47,095 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2025-03-08 04:47:47,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:47,096 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2025-03-08 04:47:47,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 04:47:47,097 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:47:47,097 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1] [2025-03-08 04:47:47,102 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 04:47:47,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-08 04:47:47,297 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:47:47,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:47:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash 806689972, now seen corresponding path program 2 times [2025-03-08 04:47:47,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:47:47,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089284169] [2025-03-08 04:47:47,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:47:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:47:47,302 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-08 04:47:47,309 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:47:47,310 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:47:47,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:47:47,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:47:47,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089284169] [2025-03-08 04:47:47,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089284169] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:47:47,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029065124] [2025-03-08 04:47:47,447 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:47:47,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:47,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:47:47,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:47:47,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 04:47:47,468 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-08 04:47:47,477 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:47:47,477 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:47:47,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:47,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 04:47:47,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:47:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:47:47,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:47:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:47:47,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029065124] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:47:47,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:47:47,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-03-08 04:47:47,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597260174] [2025-03-08 04:47:47,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:47:47,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 04:47:47,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:47:47,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 04:47:47,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:47:47,629 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:47:47,682 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2025-03-08 04:47:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 04:47:47,683 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-03-08 04:47:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:47:47,684 INFO L225 Difference]: With dead ends: 46 [2025-03-08 04:47:47,684 INFO L226 Difference]: Without dead ends: 38 [2025-03-08 04:47:47,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:47:47,685 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:47:47,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:47:47,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-08 04:47:47,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-03-08 04:47:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2025-03-08 04:47:47,694 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 21 [2025-03-08 04:47:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:47:47,694 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2025-03-08 04:47:47,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:47,694 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2025-03-08 04:47:47,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 04:47:47,695 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:47:47,695 INFO L218 NwaCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1] [2025-03-08 04:47:47,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 04:47:47,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:47,900 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:47:47,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:47:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1460945212, now seen corresponding path program 3 times [2025-03-08 04:47:47,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:47:47,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854414090] [2025-03-08 04:47:47,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:47:47,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:47:47,906 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 17 equivalence classes. [2025-03-08 04:47:47,911 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 15 of 37 statements. [2025-03-08 04:47:47,914 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 04:47:47,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-03-08 04:47:47,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:47:47,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854414090] [2025-03-08 04:47:47,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854414090] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:47:47,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251074339] [2025-03-08 04:47:47,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:47:47,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:47,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:47:47,948 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:47:47,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 04:47:47,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 17 equivalence classes. [2025-03-08 04:47:47,979 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 15 of 37 statements. [2025-03-08 04:47:47,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 04:47:47,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:47,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 04:47:47,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:47:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-03-08 04:47:47,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:47:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-03-08 04:47:48,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251074339] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:47:48,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:47:48,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-03-08 04:47:48,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278739860] [2025-03-08 04:47:48,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:47:48,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 04:47:48,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:47:48,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 04:47:48,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-03-08 04:47:48,023 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:47:48,043 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2025-03-08 04:47:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 04:47:48,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-03-08 04:47:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:47:48,046 INFO L225 Difference]: With dead ends: 49 [2025-03-08 04:47:48,046 INFO L226 Difference]: Without dead ends: 46 [2025-03-08 04:47:48,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-03-08 04:47:48,047 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:47:48,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:47:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-03-08 04:47:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-03-08 04:47:48,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2025-03-08 04:47:48,056 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 37 [2025-03-08 04:47:48,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:47:48,056 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2025-03-08 04:47:48,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2025-03-08 04:47:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:47:48,057 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:47:48,057 INFO L218 NwaCegarLoop]: trace histogram [20, 14, 6, 1, 1, 1, 1, 1] [2025-03-08 04:47:48,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 04:47:48,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:48,258 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:47:48,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:47:48,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1376333624, now seen corresponding path program 4 times [2025-03-08 04:47:48,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:47:48,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264301820] [2025-03-08 04:47:48,258 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:47:48,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:47:48,263 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-08 04:47:48,270 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:47:48,270 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:47:48,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:47:48,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:47:48,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264301820] [2025-03-08 04:47:48,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264301820] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:47:48,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038404427] [2025-03-08 04:47:48,512 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:47:48,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:48,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:47:48,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:47:48,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 04:47:48,537 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-08 04:47:48,549 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:47:48,549 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:47:48,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:48,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 04:47:48,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:47:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:47:48,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:47:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:47:48,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038404427] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:47:48,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:47:48,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2025-03-08 04:47:48,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698809332] [2025-03-08 04:47:48,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:47:48,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-08 04:47:48,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:47:48,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-08 04:47:48,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:47:48,926 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:47:49,005 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2025-03-08 04:47:49,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-08 04:47:49,006 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-03-08 04:47:49,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:47:49,006 INFO L225 Difference]: With dead ends: 94 [2025-03-08 04:47:49,006 INFO L226 Difference]: Without dead ends: 78 [2025-03-08 04:47:49,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:47:49,007 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:47:49,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:47:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-03-08 04:47:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2025-03-08 04:47:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 77 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2025-03-08 04:47:49,013 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 45 [2025-03-08 04:47:49,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:47:49,014 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2025-03-08 04:47:49,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2025-03-08 04:47:49,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 04:47:49,015 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:47:49,015 INFO L218 NwaCegarLoop]: trace histogram [36, 30, 6, 1, 1, 1, 1, 1] [2025-03-08 04:47:49,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 04:47:49,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:49,219 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:47:49,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:47:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash -392456984, now seen corresponding path program 5 times [2025-03-08 04:47:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:47:49,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470493075] [2025-03-08 04:47:49,219 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:47:49,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:47:49,225 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 77 statements into 37 equivalence classes. [2025-03-08 04:47:49,240 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 04:47:49,240 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2025-03-08 04:47:49,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 390 proven. 36 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2025-03-08 04:47:49,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:47:49,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470493075] [2025-03-08 04:47:49,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470493075] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:47:49,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889652229] [2025-03-08 04:47:49,348 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:47:49,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:49,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:47:49,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:47:49,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 04:47:49,376 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 77 statements into 37 equivalence classes. [2025-03-08 04:47:49,403 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 04:47:49,404 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2025-03-08 04:47:49,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:49,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 04:47:49,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:47:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 341 proven. 930 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:47:49,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:47:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 341 proven. 930 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:47:50,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889652229] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:47:50,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:47:50,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 33, 33] total 71 [2025-03-08 04:47:50,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115334267] [2025-03-08 04:47:50,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:47:50,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-03-08 04:47:50,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:47:50,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-03-08 04:47:50,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2025-03-08 04:47:50,989 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 71 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:47:51,169 INFO L93 Difference]: Finished difference Result 161 states and 208 transitions. [2025-03-08 04:47:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-03-08 04:47:51,170 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 71 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2025-03-08 04:47:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:47:51,172 INFO L225 Difference]: With dead ends: 161 [2025-03-08 04:47:51,172 INFO L226 Difference]: Without dead ends: 145 [2025-03-08 04:47:51,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2025-03-08 04:47:51,175 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:47:51,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:47:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-03-08 04:47:51,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2025-03-08 04:47:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.055944055944056) internal successors, (151), 143 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 151 transitions. [2025-03-08 04:47:51,189 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 151 transitions. Word has length 77 [2025-03-08 04:47:51,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:47:51,190 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 151 transitions. [2025-03-08 04:47:51,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 71 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:51,190 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 151 transitions. [2025-03-08 04:47:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 04:47:51,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:47:51,193 INFO L218 NwaCegarLoop]: trace histogram [69, 62, 7, 1, 1, 1, 1, 1] [2025-03-08 04:47:51,201 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 04:47:51,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:51,396 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:47:51,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:47:51,396 INFO L85 PathProgramCache]: Analyzing trace with hash 743773961, now seen corresponding path program 6 times [2025-03-08 04:47:51,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:47:51,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137094727] [2025-03-08 04:47:51,396 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:47:51,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:47:51,406 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 143 statements into 70 equivalence classes. [2025-03-08 04:47:51,426 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 65 of 143 statements. [2025-03-08 04:47:51,427 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-03-08 04:47:51,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 930 proven. 49 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2025-03-08 04:47:51,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:47:51,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137094727] [2025-03-08 04:47:51,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137094727] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:47:51,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941377591] [2025-03-08 04:47:51,509 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:47:51,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:51,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:47:51,512 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:47:51,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 04:47:51,538 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 143 statements into 70 equivalence classes. [2025-03-08 04:47:51,561 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 65 of 143 statements. [2025-03-08 04:47:51,562 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-03-08 04:47:51,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:51,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 04:47:51,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:47:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 930 proven. 49 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2025-03-08 04:47:51,591 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:47:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 930 proven. 49 refuted. 0 times theorem prover too weak. 3782 trivial. 0 not checked. [2025-03-08 04:47:51,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941377591] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:47:51,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:47:51,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-03-08 04:47:51,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396026842] [2025-03-08 04:47:51,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:47:51,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 04:47:51,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:47:51,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 04:47:51,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2025-03-08 04:47:51,697 INFO L87 Difference]: Start difference. First operand 144 states and 151 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:47:51,739 INFO L93 Difference]: Finished difference Result 165 states and 189 transitions. [2025-03-08 04:47:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 04:47:51,739 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2025-03-08 04:47:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:47:51,740 INFO L225 Difference]: With dead ends: 165 [2025-03-08 04:47:51,742 INFO L226 Difference]: Without dead ends: 162 [2025-03-08 04:47:51,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2025-03-08 04:47:51,742 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:47:51,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:47:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-03-08 04:47:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2025-03-08 04:47:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.1055900621118013) internal successors, (178), 161 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 178 transitions. [2025-03-08 04:47:51,750 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 178 transitions. Word has length 143 [2025-03-08 04:47:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:47:51,750 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 178 transitions. [2025-03-08 04:47:51,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 178 transitions. [2025-03-08 04:47:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-08 04:47:51,751 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:47:51,751 INFO L218 NwaCegarLoop]: trace histogram [78, 62, 16, 1, 1, 1, 1, 1] [2025-03-08 04:47:51,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 04:47:51,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:51,952 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:47:51,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:47:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1026494286, now seen corresponding path program 7 times [2025-03-08 04:47:51,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:47:51,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529267782] [2025-03-08 04:47:51,952 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:47:51,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:47:51,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-08 04:47:51,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-08 04:47:51,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:47:51,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 1953 proven. 3906 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-08 04:47:53,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:47:53,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529267782] [2025-03-08 04:47:53,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529267782] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:47:53,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751825568] [2025-03-08 04:47:53,953 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:47:53,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:47:53,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:47:53,954 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:47:53,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 04:47:53,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-08 04:47:54,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-08 04:47:54,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:47:54,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:47:54,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-03-08 04:47:54,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:47:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 1953 proven. 3906 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-08 04:47:54,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:47:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 1953 proven. 3906 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-08 04:47:57,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751825568] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:47:57,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:47:57,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2025-03-08 04:47:57,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274547828] [2025-03-08 04:47:57,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:47:57,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2025-03-08 04:47:57,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:47:57,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2025-03-08 04:47:57,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2025-03-08 04:47:57,287 INFO L87 Difference]: Start difference. First operand 162 states and 178 transitions. Second operand has 129 states, 129 states have (on average 2.0387596899224807) internal successors, (263), 129 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:47:57,569 INFO L93 Difference]: Finished difference Result 326 states and 422 transitions. [2025-03-08 04:47:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2025-03-08 04:47:57,569 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.0387596899224807) internal successors, (263), 129 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2025-03-08 04:47:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:47:57,570 INFO L225 Difference]: With dead ends: 326 [2025-03-08 04:47:57,570 INFO L226 Difference]: Without dead ends: 290 [2025-03-08 04:47:57,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2025-03-08 04:47:57,573 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 04:47:57,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 04:47:57,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2025-03-08 04:47:57,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2025-03-08 04:47:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.0588235294117647) internal successors, (306), 289 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 306 transitions. [2025-03-08 04:47:57,589 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 306 transitions. Word has length 161 [2025-03-08 04:47:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:47:57,589 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 306 transitions. [2025-03-08 04:47:57,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.0387596899224807) internal successors, (263), 129 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:47:57,589 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 306 transitions. [2025-03-08 04:47:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2025-03-08 04:47:57,594 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:47:57,594 INFO L218 NwaCegarLoop]: trace histogram [142, 126, 16, 1, 1, 1, 1, 1] [2025-03-08 04:47:57,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 04:47:57,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-08 04:47:57,794 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:47:57,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:47:57,795 INFO L85 PathProgramCache]: Analyzing trace with hash -125976270, now seen corresponding path program 8 times [2025-03-08 04:47:57,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:47:57,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016024625] [2025-03-08 04:47:57,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:47:57,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:47:57,806 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 289 statements into 2 equivalence classes. [2025-03-08 04:47:57,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 289 of 289 statements. [2025-03-08 04:47:57,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:47:57,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:48:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 20164 backedges. 3937 proven. 16002 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-08 04:48:03,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:48:03,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016024625] [2025-03-08 04:48:03,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016024625] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:48:03,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718323498] [2025-03-08 04:48:03,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:48:03,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:48:03,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:48:03,633 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:48:03,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 04:48:03,659 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 289 statements into 2 equivalence classes. [2025-03-08 04:48:03,708 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 289 of 289 statements. [2025-03-08 04:48:03,708 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:48:03,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:48:03,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 128 conjuncts are in the unsatisfiable core [2025-03-08 04:48:03,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:48:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 20164 backedges. 3937 proven. 16002 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-08 04:48:03,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:48:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 20164 backedges. 3937 proven. 16002 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-08 04:48:16,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718323498] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:48:16,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:48:16,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 257 [2025-03-08 04:48:16,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596761508] [2025-03-08 04:48:16,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:48:16,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2025-03-08 04:48:16,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:48:16,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2025-03-08 04:48:16,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2025-03-08 04:48:16,041 INFO L87 Difference]: Start difference. First operand 290 states and 306 transitions. Second operand has 257 states, 257 states have (on average 2.019455252918288) internal successors, (519), 257 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:48:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:48:16,850 INFO L93 Difference]: Finished difference Result 582 states and 742 transitions. [2025-03-08 04:48:16,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2025-03-08 04:48:16,851 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 257 states have (on average 2.019455252918288) internal successors, (519), 257 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2025-03-08 04:48:16,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:48:16,853 INFO L225 Difference]: With dead ends: 582 [2025-03-08 04:48:16,853 INFO L226 Difference]: Without dead ends: 546 [2025-03-08 04:48:16,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2025-03-08 04:48:16,856 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 04:48:16,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 04:48:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2025-03-08 04:48:16,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2025-03-08 04:48:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 1.0311926605504587) internal successors, (562), 545 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:48:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 562 transitions. [2025-03-08 04:48:16,870 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 562 transitions. Word has length 289 [2025-03-08 04:48:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:48:16,870 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 562 transitions. [2025-03-08 04:48:16,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 257 states have (on average 2.019455252918288) internal successors, (519), 257 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:48:16,871 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 562 transitions. [2025-03-08 04:48:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2025-03-08 04:48:16,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:48:16,876 INFO L218 NwaCegarLoop]: trace histogram [270, 254, 16, 1, 1, 1, 1, 1] [2025-03-08 04:48:16,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-08 04:48:17,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 04:48:17,076 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:48:17,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:48:17,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1421909454, now seen corresponding path program 9 times [2025-03-08 04:48:17,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:48:17,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100470589] [2025-03-08 04:48:17,077 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:48:17,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:48:17,089 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 545 statements into 271 equivalence classes. [2025-03-08 04:48:17,100 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) and asserted 71 of 545 statements. [2025-03-08 04:48:17,101 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2025-03-08 04:48:17,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:48:17,267 INFO L134 CoverageAnalysis]: Checked inductivity of 72900 backedges. 8382 proven. 256 refuted. 0 times theorem prover too weak. 64262 trivial. 0 not checked. [2025-03-08 04:48:17,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:48:17,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100470589] [2025-03-08 04:48:17,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100470589] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:48:17,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443958080] [2025-03-08 04:48:17,268 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:48:17,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:48:17,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:48:17,270 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:48:17,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 04:48:17,331 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 545 statements into 271 equivalence classes. [2025-03-08 04:48:17,356 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) and asserted 71 of 545 statements. [2025-03-08 04:48:17,356 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2025-03-08 04:48:17,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:48:17,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 04:48:17,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:48:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 72900 backedges. 8382 proven. 256 refuted. 0 times theorem prover too weak. 64262 trivial. 0 not checked. [2025-03-08 04:48:17,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:48:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 72900 backedges. 8382 proven. 256 refuted. 0 times theorem prover too weak. 64262 trivial. 0 not checked. [2025-03-08 04:48:17,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443958080] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:48:17,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:48:17,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 36 [2025-03-08 04:48:17,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193608206] [2025-03-08 04:48:17,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:48:17,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-08 04:48:17,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:48:17,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-08 04:48:17,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 04:48:17,728 INFO L87 Difference]: Start difference. First operand 546 states and 562 transitions. Second operand has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 36 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:48:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:48:17,813 INFO L93 Difference]: Finished difference Result 585 states and 636 transitions. [2025-03-08 04:48:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-08 04:48:17,814 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 36 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 545 [2025-03-08 04:48:17,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:48:17,816 INFO L225 Difference]: With dead ends: 585 [2025-03-08 04:48:17,816 INFO L226 Difference]: Without dead ends: 582 [2025-03-08 04:48:17,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1107 GetRequests, 1073 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2025-03-08 04:48:17,818 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:48:17,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:48:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2025-03-08 04:48:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2025-03-08 04:48:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 581 states have (on average 1.0602409638554218) internal successors, (616), 581 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:48:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 616 transitions. [2025-03-08 04:48:17,834 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 616 transitions. Word has length 545 [2025-03-08 04:48:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:48:17,835 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 616 transitions. [2025-03-08 04:48:17,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0555555555555554) internal successors, (74), 36 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:48:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 616 transitions. [2025-03-08 04:48:17,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2025-03-08 04:48:17,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:48:17,842 INFO L218 NwaCegarLoop]: trace histogram [288, 254, 34, 1, 1, 1, 1, 1] [2025-03-08 04:48:17,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-08 04:48:18,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 04:48:18,043 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:48:18,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:48:18,043 INFO L85 PathProgramCache]: Analyzing trace with hash 631553220, now seen corresponding path program 10 times [2025-03-08 04:48:18,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:48:18,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368318944] [2025-03-08 04:48:18,043 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:48:18,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:48:18,054 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 581 statements into 2 equivalence classes. [2025-03-08 04:48:18,178 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 581 of 581 statements. [2025-03-08 04:48:18,178 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:48:18,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:48:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 82944 backedges. 17085 proven. 64770 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2025-03-08 04:48:41,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:48:41,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368318944] [2025-03-08 04:48:41,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368318944] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:48:41,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811754638] [2025-03-08 04:48:41,921 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:48:41,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:48:41,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:48:41,923 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:48:41,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 04:48:41,965 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 581 statements into 2 equivalence classes. [2025-03-08 04:48:42,060 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 581 of 581 statements. [2025-03-08 04:48:42,060 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:48:42,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:48:42,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 256 conjuncts are in the unsatisfiable core [2025-03-08 04:48:42,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:48:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 82944 backedges. 17085 proven. 64770 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2025-03-08 04:48:42,519 INFO L312 TraceCheckSpWp]: Computing backward predicates...