./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.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 16b89964825dc5b7831662ee1568f8465e0e5c35795cab8e4e81d90352bde374 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:14:14,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:14:14,168 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:14:14,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:14:14,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:14:14,201 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:14:14,202 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:14:14,202 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:14:14,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:14:14,203 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:14:14,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:14:14,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:14:14,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:14:14,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:14:14,206 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:14:14,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:14:14,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:14:14,207 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:14:14,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:14:14,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:14:14,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:14:14,211 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:14:14,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:14:14,213 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:14:14,214 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:14:14,214 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:14:14,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:14:14,214 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:14:14,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:14:14,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:14:14,215 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:14:14,216 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:14:14,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:14:14,217 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:14:14,217 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:14:14,217 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:14:14,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:14:14,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:14:14,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:14:14,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:14:14,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:14:14,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:14:14,220 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16b89964825dc5b7831662ee1568f8465e0e5c35795cab8e4e81d90352bde374 [2024-10-24 01:14:14,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:14:14,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:14:14,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:14:14,520 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:14:14,521 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:14:14,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c [2024-10-24 01:14:15,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:14:16,257 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:14:16,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c [2024-10-24 01:14:16,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f66262fb/6fb1ae82e2f04ae08c96c860e44242d2/FLAG3984d7e94 [2024-10-24 01:14:16,301 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f66262fb/6fb1ae82e2f04ae08c96c860e44242d2 [2024-10-24 01:14:16,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:14:16,305 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:14:16,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:14:16,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:14:16,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:14:16,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32662d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16, skipping insertion in model container [2024-10-24 01:14:16,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:14:16,540 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c[646,659] [2024-10-24 01:14:16,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:14:16,694 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:14:16,706 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.3.cil.c[646,659] [2024-10-24 01:14:16,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:14:16,806 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:14:16,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16 WrapperNode [2024-10-24 01:14:16,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:14:16,811 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:14:16,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:14:16,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:14:16,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,891 INFO L138 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 857 [2024-10-24 01:14:16,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:14:16,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:14:16,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:14:16,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:14:16,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,930 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]. [2024-10-24 01:14:16,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:14:16,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:14:16,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:14:16,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:14:16,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (1/1) ... [2024-10-24 01:14:16,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:14:16,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:17,014 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) [2024-10-24 01:14:17,015 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 [2024-10-24 01:14:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:14:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:14:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-24 01:14:17,055 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-24 01:14:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:14:17,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:14:17,136 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:14:17,138 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:14:18,053 INFO L? ?]: Removed 90 outVars from TransFormulas that were not future-live. [2024-10-24 01:14:18,053 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:14:18,122 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:14:18,122 INFO L314 CfgBuilder]: Removed 13 assume(true) statements. [2024-10-24 01:14:18,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:14:18 BoogieIcfgContainer [2024-10-24 01:14:18,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:14:18,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:14:18,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:14:18,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:14:18,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:14:16" (1/3) ... [2024-10-24 01:14:18,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f95fbfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:14:18, skipping insertion in model container [2024-10-24 01:14:18,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:14:16" (2/3) ... [2024-10-24 01:14:18,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f95fbfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:14:18, skipping insertion in model container [2024-10-24 01:14:18,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:14:18" (3/3) ... [2024-10-24 01:14:18,130 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.3.cil.c [2024-10-24 01:14:18,146 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:14:18,146 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:14:18,219 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:14:18,226 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;@7cd44f1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:14:18,226 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:14:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 251 states, 243 states have (on average 1.9382716049382716) internal successors, (471), 249 states have internal predecessors, (471), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-24 01:14:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-24 01:14:18,247 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:18,248 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:18,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:18,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash -496552046, now seen corresponding path program 1 times [2024-10-24 01:14:18,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:18,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941926251] [2024-10-24 01:14:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:18,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:18,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:18,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941926251] [2024-10-24 01:14:18,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941926251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:18,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:18,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:14:18,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324537480] [2024-10-24 01:14:18,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:18,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:18,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:18,589 INFO L87 Difference]: Start difference. First operand has 251 states, 243 states have (on average 1.9382716049382716) internal successors, (471), 249 states have internal predecessors, (471), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:18,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:18,991 INFO L93 Difference]: Finished difference Result 662 states and 1267 transitions. [2024-10-24 01:14:18,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:18,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-10-24 01:14:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:19,005 INFO L225 Difference]: With dead ends: 662 [2024-10-24 01:14:19,006 INFO L226 Difference]: Without dead ends: 411 [2024-10-24 01:14:19,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:19,013 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 247 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:19,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 702 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:14:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-10-24 01:14:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 404. [2024-10-24 01:14:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 398 states have (on average 1.6407035175879396) internal successors, (653), 402 states have internal predecessors, (653), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 658 transitions. [2024-10-24 01:14:19,075 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 658 transitions. Word has length 26 [2024-10-24 01:14:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:19,076 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 658 transitions. [2024-10-24 01:14:19,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:19,077 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 658 transitions. [2024-10-24 01:14:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 01:14:19,079 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:19,079 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:19,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:14:19,080 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:19,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:19,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1406671528, now seen corresponding path program 1 times [2024-10-24 01:14:19,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:19,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116448973] [2024-10-24 01:14:19,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:19,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:19,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:19,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116448973] [2024-10-24 01:14:19,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116448973] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:19,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:19,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:14:19,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866052587] [2024-10-24 01:14:19,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:19,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:19,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:19,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:19,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:19,162 INFO L87 Difference]: Start difference. First operand 404 states and 658 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:19,342 INFO L93 Difference]: Finished difference Result 1060 states and 1752 transitions. [2024-10-24 01:14:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:19,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-24 01:14:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:19,347 INFO L225 Difference]: With dead ends: 1060 [2024-10-24 01:14:19,347 INFO L226 Difference]: Without dead ends: 669 [2024-10-24 01:14:19,350 INFO L431 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 [2024-10-24 01:14:19,352 INFO L432 NwaCegarLoop]: 588 mSDtfsCounter, 312 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:19,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 932 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-10-24 01:14:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 662. [2024-10-24 01:14:19,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 656 states have (on average 1.6722560975609757) internal successors, (1097), 660 states have internal predecessors, (1097), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1102 transitions. [2024-10-24 01:14:19,401 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1102 transitions. Word has length 37 [2024-10-24 01:14:19,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:19,402 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1102 transitions. [2024-10-24 01:14:19,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:19,402 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1102 transitions. [2024-10-24 01:14:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-24 01:14:19,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:19,404 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:19,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:14:19,404 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:19,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:19,405 INFO L85 PathProgramCache]: Analyzing trace with hash -927320313, now seen corresponding path program 1 times [2024-10-24 01:14:19,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:19,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253187994] [2024-10-24 01:14:19,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:19,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:19,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253187994] [2024-10-24 01:14:19,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253187994] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:19,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:19,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:14:19,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550054059] [2024-10-24 01:14:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:19,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:19,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:19,495 INFO L87 Difference]: Start difference. First operand 662 states and 1102 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:19,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:19,620 INFO L93 Difference]: Finished difference Result 1660 states and 2767 transitions. [2024-10-24 01:14:19,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:19,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-10-24 01:14:19,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:19,633 INFO L225 Difference]: With dead ends: 1660 [2024-10-24 01:14:19,634 INFO L226 Difference]: Without dead ends: 1022 [2024-10-24 01:14:19,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:19,637 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 336 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:19,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 738 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:19,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2024-10-24 01:14:19,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1011. [2024-10-24 01:14:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 1005 states have (on average 1.6666666666666667) internal successors, (1675), 1009 states have internal predecessors, (1675), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1680 transitions. [2024-10-24 01:14:19,695 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1680 transitions. Word has length 38 [2024-10-24 01:14:19,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:19,695 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1680 transitions. [2024-10-24 01:14:19,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:19,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1680 transitions. [2024-10-24 01:14:19,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-24 01:14:19,697 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:19,697 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:19,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:14:19,698 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:19,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:19,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1056862835, now seen corresponding path program 1 times [2024-10-24 01:14:19,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:19,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83545469] [2024-10-24 01:14:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:19,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:19,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:19,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83545469] [2024-10-24 01:14:19,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83545469] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:19,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:19,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:14:19,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110139277] [2024-10-24 01:14:19,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:19,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:14:19,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:19,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:14:19,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:14:19,839 INFO L87 Difference]: Start difference. First operand 1011 states and 1680 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:20,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:20,477 INFO L93 Difference]: Finished difference Result 3578 states and 5964 transitions. [2024-10-24 01:14:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:14:20,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-10-24 01:14:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:20,491 INFO L225 Difference]: With dead ends: 3578 [2024-10-24 01:14:20,492 INFO L226 Difference]: Without dead ends: 2591 [2024-10-24 01:14:20,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:14:20,496 INFO L432 NwaCegarLoop]: 600 mSDtfsCounter, 1109 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:20,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1463 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 01:14:20,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2024-10-24 01:14:20,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2101. [2024-10-24 01:14:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2101 states, 2095 states have (on average 1.6644391408114558) internal successors, (3487), 2099 states have internal predecessors, (3487), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 3492 transitions. [2024-10-24 01:14:20,571 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 3492 transitions. Word has length 43 [2024-10-24 01:14:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:20,572 INFO L471 AbstractCegarLoop]: Abstraction has 2101 states and 3492 transitions. [2024-10-24 01:14:20,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 3492 transitions. [2024-10-24 01:14:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 01:14:20,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:20,574 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:20,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:14:20,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:20,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2144538685, now seen corresponding path program 1 times [2024-10-24 01:14:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:20,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29982696] [2024-10-24 01:14:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:20,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:20,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:20,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29982696] [2024-10-24 01:14:20,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29982696] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:20,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:20,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:14:20,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125877419] [2024-10-24 01:14:20,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:20,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:14:20,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:20,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:14:20,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:14:20,671 INFO L87 Difference]: Start difference. First operand 2101 states and 3492 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:21,187 INFO L93 Difference]: Finished difference Result 6150 states and 10099 transitions. [2024-10-24 01:14:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:14:21,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-24 01:14:21,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:21,204 INFO L225 Difference]: With dead ends: 6150 [2024-10-24 01:14:21,204 INFO L226 Difference]: Without dead ends: 4067 [2024-10-24 01:14:21,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:14:21,211 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 708 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:21,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 944 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:14:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2024-10-24 01:14:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 3713. [2024-10-24 01:14:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3707 states have (on average 1.629349878608039) internal successors, (6040), 3711 states have internal predecessors, (6040), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 6045 transitions. [2024-10-24 01:14:21,338 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 6045 transitions. Word has length 50 [2024-10-24 01:14:21,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:21,338 INFO L471 AbstractCegarLoop]: Abstraction has 3713 states and 6045 transitions. [2024-10-24 01:14:21,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:21,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 6045 transitions. [2024-10-24 01:14:21,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 01:14:21,340 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:21,340 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:21,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:14:21,341 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:21,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:21,341 INFO L85 PathProgramCache]: Analyzing trace with hash 245452, now seen corresponding path program 1 times [2024-10-24 01:14:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:21,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798100037] [2024-10-24 01:14:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:21,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:21,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:21,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798100037] [2024-10-24 01:14:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798100037] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:21,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:21,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:14:21,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781426233] [2024-10-24 01:14:21,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:21,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:21,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:21,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:21,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:21,398 INFO L87 Difference]: Start difference. First operand 3713 states and 6045 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:21,621 INFO L93 Difference]: Finished difference Result 8822 states and 14322 transitions. [2024-10-24 01:14:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:21,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-10-24 01:14:21,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:21,642 INFO L225 Difference]: With dead ends: 8822 [2024-10-24 01:14:21,642 INFO L226 Difference]: Without dead ends: 5131 [2024-10-24 01:14:21,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:21,648 INFO L432 NwaCegarLoop]: 404 mSDtfsCounter, 351 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:21,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 641 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2024-10-24 01:14:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 4855. [2024-10-24 01:14:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 4849 states have (on average 1.6102289131779748) internal successors, (7808), 4853 states have internal predecessors, (7808), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 7813 transitions. [2024-10-24 01:14:21,801 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 7813 transitions. Word has length 50 [2024-10-24 01:14:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:21,802 INFO L471 AbstractCegarLoop]: Abstraction has 4855 states and 7813 transitions. [2024-10-24 01:14:21,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 7813 transitions. [2024-10-24 01:14:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 01:14:21,804 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:21,804 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:21,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:14:21,805 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:21,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:21,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1613361935, now seen corresponding path program 1 times [2024-10-24 01:14:21,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:21,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612552268] [2024-10-24 01:14:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:21,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:21,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:21,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612552268] [2024-10-24 01:14:21,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612552268] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:21,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:21,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:14:21,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662378364] [2024-10-24 01:14:21,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:21,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:21,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:21,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:21,878 INFO L87 Difference]: Start difference. First operand 4855 states and 7813 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:22,342 INFO L93 Difference]: Finished difference Result 11739 states and 18977 transitions. [2024-10-24 01:14:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:22,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-10-24 01:14:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:22,369 INFO L225 Difference]: With dead ends: 11739 [2024-10-24 01:14:22,369 INFO L226 Difference]: Without dead ends: 6906 [2024-10-24 01:14:22,377 INFO L431 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 [2024-10-24 01:14:22,378 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 237 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:22,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 791 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:14:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6906 states. [2024-10-24 01:14:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6906 to 5615. [2024-10-24 01:14:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5609 states have (on average 1.5558923159208415) internal successors, (8727), 5613 states have internal predecessors, (8727), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:22,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 8732 transitions. [2024-10-24 01:14:22,578 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 8732 transitions. Word has length 56 [2024-10-24 01:14:22,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:22,579 INFO L471 AbstractCegarLoop]: Abstraction has 5615 states and 8732 transitions. [2024-10-24 01:14:22,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:22,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 8732 transitions. [2024-10-24 01:14:22,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 01:14:22,582 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:22,582 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:22,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:14:22,582 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:22,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:22,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2134058211, now seen corresponding path program 1 times [2024-10-24 01:14:22,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:22,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407489] [2024-10-24 01:14:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:22,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:22,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407489] [2024-10-24 01:14:22,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:22,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:22,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:14:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993681289] [2024-10-24 01:14:22,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:22,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:22,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:22,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:22,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:22,656 INFO L87 Difference]: Start difference. First operand 5615 states and 8732 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:22,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:22,867 INFO L93 Difference]: Finished difference Result 11074 states and 17242 transitions. [2024-10-24 01:14:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:22,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-10-24 01:14:22,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:22,898 INFO L225 Difference]: With dead ends: 11074 [2024-10-24 01:14:22,898 INFO L226 Difference]: Without dead ends: 5481 [2024-10-24 01:14:22,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:22,912 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 328 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:22,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 401 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5481 states. [2024-10-24 01:14:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5481 to 5481. [2024-10-24 01:14:23,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5481 states, 5475 states have (on average 1.5360730593607306) internal successors, (8410), 5479 states have internal predecessors, (8410), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5481 states to 5481 states and 8415 transitions. [2024-10-24 01:14:23,073 INFO L78 Accepts]: Start accepts. Automaton has 5481 states and 8415 transitions. Word has length 58 [2024-10-24 01:14:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:23,074 INFO L471 AbstractCegarLoop]: Abstraction has 5481 states and 8415 transitions. [2024-10-24 01:14:23,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5481 states and 8415 transitions. [2024-10-24 01:14:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 01:14:23,077 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:23,078 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:23,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:14:23,078 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:23,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1957123240, now seen corresponding path program 1 times [2024-10-24 01:14:23,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:23,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635138013] [2024-10-24 01:14:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:23,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:23,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:23,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635138013] [2024-10-24 01:14:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635138013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:23,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:23,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:14:23,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282322203] [2024-10-24 01:14:23,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:23,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:23,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:23,133 INFO L87 Difference]: Start difference. First operand 5481 states and 8415 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:23,282 INFO L93 Difference]: Finished difference Result 10553 states and 16320 transitions. [2024-10-24 01:14:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:23,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-10-24 01:14:23,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:23,297 INFO L225 Difference]: With dead ends: 10553 [2024-10-24 01:14:23,298 INFO L226 Difference]: Without dead ends: 5094 [2024-10-24 01:14:23,331 INFO L431 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 [2024-10-24 01:14:23,332 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 145 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:23,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 831 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:14:23,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5094 states. [2024-10-24 01:14:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5094 to 4437. [2024-10-24 01:14:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 4431 states have (on average 1.5596930715414128) internal successors, (6911), 4435 states have internal predecessors, (6911), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 6916 transitions. [2024-10-24 01:14:23,447 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 6916 transitions. Word has length 59 [2024-10-24 01:14:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:23,448 INFO L471 AbstractCegarLoop]: Abstraction has 4437 states and 6916 transitions. [2024-10-24 01:14:23,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 6916 transitions. [2024-10-24 01:14:23,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 01:14:23,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:23,453 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:23,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:14:23,453 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:23,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:23,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1486111498, now seen corresponding path program 1 times [2024-10-24 01:14:23,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:23,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790268262] [2024-10-24 01:14:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:23,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:23,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:23,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790268262] [2024-10-24 01:14:23,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790268262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:23,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:23,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 01:14:23,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124667635] [2024-10-24 01:14:23,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:23,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 01:14:23,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:23,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 01:14:23,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:14:23,561 INFO L87 Difference]: Start difference. First operand 4437 states and 6916 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:24,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:24,154 INFO L93 Difference]: Finished difference Result 12878 states and 20081 transitions. [2024-10-24 01:14:24,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 01:14:24,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-24 01:14:24,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:24,176 INFO L225 Difference]: With dead ends: 12878 [2024-10-24 01:14:24,177 INFO L226 Difference]: Without dead ends: 8643 [2024-10-24 01:14:24,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:14:24,186 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 900 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:24,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 2188 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:14:24,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8643 states. [2024-10-24 01:14:24,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8643 to 5981. [2024-10-24 01:14:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5981 states, 5975 states have (on average 1.5603347280334727) internal successors, (9323), 5979 states have internal predecessors, (9323), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5981 states to 5981 states and 9328 transitions. [2024-10-24 01:14:24,370 INFO L78 Accepts]: Start accepts. Automaton has 5981 states and 9328 transitions. Word has length 61 [2024-10-24 01:14:24,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:24,371 INFO L471 AbstractCegarLoop]: Abstraction has 5981 states and 9328 transitions. [2024-10-24 01:14:24,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:24,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5981 states and 9328 transitions. [2024-10-24 01:14:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:14:24,373 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:24,373 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:24,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:14:24,373 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:24,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:24,373 INFO L85 PathProgramCache]: Analyzing trace with hash -183177238, now seen corresponding path program 1 times [2024-10-24 01:14:24,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:24,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261883813] [2024-10-24 01:14:24,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:24,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:24,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:24,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261883813] [2024-10-24 01:14:24,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261883813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:24,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:24,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:14:24,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802702446] [2024-10-24 01:14:24,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:24,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:14:24,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:24,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:14:24,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:14:24,496 INFO L87 Difference]: Start difference. First operand 5981 states and 9328 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:24,937 INFO L93 Difference]: Finished difference Result 14344 states and 22229 transitions. [2024-10-24 01:14:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 01:14:24,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 01:14:24,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:24,959 INFO L225 Difference]: With dead ends: 14344 [2024-10-24 01:14:24,960 INFO L226 Difference]: Without dead ends: 8565 [2024-10-24 01:14:24,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-24 01:14:24,971 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 795 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:24,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 2725 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:14:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8565 states. [2024-10-24 01:14:25,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8565 to 6321. [2024-10-24 01:14:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6321 states, 6315 states have (on average 1.54916864608076) internal successors, (9783), 6319 states have internal predecessors, (9783), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6321 states to 6321 states and 9788 transitions. [2024-10-24 01:14:25,197 INFO L78 Accepts]: Start accepts. Automaton has 6321 states and 9788 transitions. Word has length 62 [2024-10-24 01:14:25,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:25,198 INFO L471 AbstractCegarLoop]: Abstraction has 6321 states and 9788 transitions. [2024-10-24 01:14:25,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:25,198 INFO L276 IsEmpty]: Start isEmpty. Operand 6321 states and 9788 transitions. [2024-10-24 01:14:25,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:14:25,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:25,201 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:25,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:14:25,201 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:25,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:25,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1485200619, now seen corresponding path program 1 times [2024-10-24 01:14:25,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:25,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717711260] [2024-10-24 01:14:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:25,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:25,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:25,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717711260] [2024-10-24 01:14:25,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717711260] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:25,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:25,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:14:25,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813355173] [2024-10-24 01:14:25,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:25,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:25,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:25,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:25,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:25,246 INFO L87 Difference]: Start difference. First operand 6321 states and 9788 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:25,486 INFO L93 Difference]: Finished difference Result 13413 states and 20726 transitions. [2024-10-24 01:14:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-10-24 01:14:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:25,505 INFO L225 Difference]: With dead ends: 13413 [2024-10-24 01:14:25,506 INFO L226 Difference]: Without dead ends: 7112 [2024-10-24 01:14:25,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:25,517 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 130 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:25,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 740 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:25,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7112 states. [2024-10-24 01:14:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7112 to 7026. [2024-10-24 01:14:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7026 states, 7020 states have (on average 1.543019943019943) internal successors, (10832), 7024 states have internal predecessors, (10832), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 10837 transitions. [2024-10-24 01:14:25,734 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 10837 transitions. Word has length 74 [2024-10-24 01:14:25,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:25,734 INFO L471 AbstractCegarLoop]: Abstraction has 7026 states and 10837 transitions. [2024-10-24 01:14:25,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:25,735 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 10837 transitions. [2024-10-24 01:14:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 01:14:25,737 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:25,737 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:25,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:14:25,738 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:25,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:25,738 INFO L85 PathProgramCache]: Analyzing trace with hash -851166086, now seen corresponding path program 1 times [2024-10-24 01:14:25,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:25,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100036762] [2024-10-24 01:14:25,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:25,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:25,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:25,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100036762] [2024-10-24 01:14:25,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100036762] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:25,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:25,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:14:25,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958814559] [2024-10-24 01:14:25,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:25,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:14:25,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:25,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:14:25,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:14:25,786 INFO L87 Difference]: Start difference. First operand 7026 states and 10837 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:26,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:26,377 INFO L93 Difference]: Finished difference Result 18235 states and 27850 transitions. [2024-10-24 01:14:26,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:14:26,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-24 01:14:26,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:26,408 INFO L225 Difference]: With dead ends: 18235 [2024-10-24 01:14:26,408 INFO L226 Difference]: Without dead ends: 11096 [2024-10-24 01:14:26,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:14:26,424 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 608 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:26,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1131 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:14:26,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11096 states. [2024-10-24 01:14:26,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11096 to 9743. [2024-10-24 01:14:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9743 states, 9737 states have (on average 1.5044674951217007) internal successors, (14649), 9741 states have internal predecessors, (14649), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9743 states to 9743 states and 14654 transitions. [2024-10-24 01:14:26,837 INFO L78 Accepts]: Start accepts. Automaton has 9743 states and 14654 transitions. Word has length 85 [2024-10-24 01:14:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:26,837 INFO L471 AbstractCegarLoop]: Abstraction has 9743 states and 14654 transitions. [2024-10-24 01:14:26,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 9743 states and 14654 transitions. [2024-10-24 01:14:26,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 01:14:26,841 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:26,841 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:26,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:14:26,842 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:26,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash -797511985, now seen corresponding path program 1 times [2024-10-24 01:14:26,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:26,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682236109] [2024-10-24 01:14:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:26,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:26,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:26,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682236109] [2024-10-24 01:14:26,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682236109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:26,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:26,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:14:26,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720499913] [2024-10-24 01:14:26,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:26,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:26,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:26,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:26,909 INFO L87 Difference]: Start difference. First operand 9743 states and 14654 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:27,124 INFO L93 Difference]: Finished difference Result 13864 states and 20898 transitions. [2024-10-24 01:14:27,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:27,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-10-24 01:14:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:27,136 INFO L225 Difference]: With dead ends: 13864 [2024-10-24 01:14:27,136 INFO L226 Difference]: Without dead ends: 4131 [2024-10-24 01:14:27,150 INFO L431 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 [2024-10-24 01:14:27,151 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 323 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:27,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 465 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:27,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2024-10-24 01:14:27,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 4073. [2024-10-24 01:14:27,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4073 states, 4067 states have (on average 1.4029997541185149) internal successors, (5706), 4071 states have internal predecessors, (5706), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4073 states to 4073 states and 5711 transitions. [2024-10-24 01:14:27,364 INFO L78 Accepts]: Start accepts. Automaton has 4073 states and 5711 transitions. Word has length 91 [2024-10-24 01:14:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:27,364 INFO L471 AbstractCegarLoop]: Abstraction has 4073 states and 5711 transitions. [2024-10-24 01:14:27,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 4073 states and 5711 transitions. [2024-10-24 01:14:27,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-24 01:14:27,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:27,366 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:27,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:14:27,366 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:27,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 941878888, now seen corresponding path program 1 times [2024-10-24 01:14:27,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:27,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836231447] [2024-10-24 01:14:27,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:27,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:27,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836231447] [2024-10-24 01:14:27,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836231447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:27,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:27,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:14:27,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637562255] [2024-10-24 01:14:27,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:27,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:14:27,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:14:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:14:27,443 INFO L87 Difference]: Start difference. First operand 4073 states and 5711 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:27,748 INFO L93 Difference]: Finished difference Result 9565 states and 13403 transitions. [2024-10-24 01:14:27,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:14:27,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-24 01:14:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:27,762 INFO L225 Difference]: With dead ends: 9565 [2024-10-24 01:14:27,763 INFO L226 Difference]: Without dead ends: 5656 [2024-10-24 01:14:27,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:14:27,775 INFO L432 NwaCegarLoop]: 639 mSDtfsCounter, 519 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:27,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 2140 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:27,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5656 states. [2024-10-24 01:14:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5656 to 4075. [2024-10-24 01:14:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4069 states have (on average 1.3998525436225118) internal successors, (5696), 4073 states have internal predecessors, (5696), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 5701 transitions. [2024-10-24 01:14:27,915 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 5701 transitions. Word has length 95 [2024-10-24 01:14:27,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:27,916 INFO L471 AbstractCegarLoop]: Abstraction has 4075 states and 5701 transitions. [2024-10-24 01:14:27,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 5701 transitions. [2024-10-24 01:14:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 01:14:27,919 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:27,920 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:27,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:14:27,920 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:27,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1176700131, now seen corresponding path program 1 times [2024-10-24 01:14:27,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:27,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070706123] [2024-10-24 01:14:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:27,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:27,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:27,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070706123] [2024-10-24 01:14:27,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070706123] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:27,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980024261] [2024-10-24 01:14:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:27,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:27,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:27,990 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) [2024-10-24 01:14:28,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 01:14:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:28,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 01:14:28,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 01:14:28,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 01:14:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980024261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:28,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 01:14:28,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-24 01:14:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650358250] [2024-10-24 01:14:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:28,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:28,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:28,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:28,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:14:28,288 INFO L87 Difference]: Start difference. First operand 4075 states and 5701 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:28,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:28,475 INFO L93 Difference]: Finished difference Result 5218 states and 7290 transitions. [2024-10-24 01:14:28,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:28,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-10-24 01:14:28,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:28,488 INFO L225 Difference]: With dead ends: 5218 [2024-10-24 01:14:28,488 INFO L226 Difference]: Without dead ends: 5214 [2024-10-24 01:14:28,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:14:28,491 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 219 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:28,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 727 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:28,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2024-10-24 01:14:28,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 5076. [2024-10-24 01:14:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5076 states, 5070 states have (on average 1.4041420118343195) internal successors, (7119), 5074 states have internal predecessors, (7119), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 7124 transitions. [2024-10-24 01:14:28,656 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 7124 transitions. Word has length 97 [2024-10-24 01:14:28,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:28,656 INFO L471 AbstractCegarLoop]: Abstraction has 5076 states and 7124 transitions. [2024-10-24 01:14:28,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:28,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 7124 transitions. [2024-10-24 01:14:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-24 01:14:28,660 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:28,660 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:28,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 01:14:28,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-24 01:14:28,862 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:28,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:28,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1885042639, now seen corresponding path program 1 times [2024-10-24 01:14:28,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:28,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081846759] [2024-10-24 01:14:28,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:28,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:14:28,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081846759] [2024-10-24 01:14:28,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081846759] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:28,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770545724] [2024-10-24 01:14:28,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:28,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:28,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:28,976 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) [2024-10-24 01:14:28,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 01:14:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:29,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 01:14:29,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 01:14:29,189 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 01:14:29,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770545724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:29,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 01:14:29,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-24 01:14:29,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30024820] [2024-10-24 01:14:29,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:29,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:29,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:29,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:14:29,191 INFO L87 Difference]: Start difference. First operand 5076 states and 7124 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:29,355 INFO L93 Difference]: Finished difference Result 9020 states and 12726 transitions. [2024-10-24 01:14:29,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:29,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-10-24 01:14:29,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:29,366 INFO L225 Difference]: With dead ends: 9020 [2024-10-24 01:14:29,366 INFO L226 Difference]: Without dead ends: 3955 [2024-10-24 01:14:29,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:14:29,373 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 249 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:29,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 384 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:14:29,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2024-10-24 01:14:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3620. [2024-10-24 01:14:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3614 states have (on average 1.3824017708909795) internal successors, (4996), 3618 states have internal predecessors, (4996), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:29,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5001 transitions. [2024-10-24 01:14:29,487 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5001 transitions. Word has length 149 [2024-10-24 01:14:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:29,488 INFO L471 AbstractCegarLoop]: Abstraction has 3620 states and 5001 transitions. [2024-10-24 01:14:29,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:29,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5001 transitions. [2024-10-24 01:14:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-24 01:14:29,491 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:29,491 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:29,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 01:14:29,691 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,SelfDestructingSolverStorable16 [2024-10-24 01:14:29,692 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:29,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:29,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1521318299, now seen corresponding path program 1 times [2024-10-24 01:14:29,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:29,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219895218] [2024-10-24 01:14:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:29,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 01:14:29,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219895218] [2024-10-24 01:14:29,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219895218] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603870784] [2024-10-24 01:14:29,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:29,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:29,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:29,813 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) [2024-10-24 01:14:29,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 01:14:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:29,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 01:14:29,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 01:14:29,997 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 01:14:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603870784] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:29,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 01:14:29,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-24 01:14:29,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387897663] [2024-10-24 01:14:29,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:29,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:30,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:30,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:14:30,000 INFO L87 Difference]: Start difference. First operand 3620 states and 5001 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:30,152 INFO L93 Difference]: Finished difference Result 7077 states and 9824 transitions. [2024-10-24 01:14:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2024-10-24 01:14:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:30,163 INFO L225 Difference]: With dead ends: 7077 [2024-10-24 01:14:30,163 INFO L226 Difference]: Without dead ends: 3620 [2024-10-24 01:14:30,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:14:30,169 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 259 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:30,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 356 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:30,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3620 states. [2024-10-24 01:14:30,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 3620. [2024-10-24 01:14:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3614 states have (on average 1.3436635307138904) internal successors, (4856), 3618 states have internal predecessors, (4856), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 4861 transitions. [2024-10-24 01:14:30,356 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 4861 transitions. Word has length 152 [2024-10-24 01:14:30,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:30,357 INFO L471 AbstractCegarLoop]: Abstraction has 3620 states and 4861 transitions. [2024-10-24 01:14:30,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:30,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 4861 transitions. [2024-10-24 01:14:30,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-24 01:14:30,360 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:30,360 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:30,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 01:14:30,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-24 01:14:30,565 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:30,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1599015156, now seen corresponding path program 1 times [2024-10-24 01:14:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:30,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097327476] [2024-10-24 01:14:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:30,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 01:14:30,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:30,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097327476] [2024-10-24 01:14:30,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097327476] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:30,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516949873] [2024-10-24 01:14:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:30,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:30,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:30,706 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) [2024-10-24 01:14:30,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 01:14:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:30,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 01:14:30,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 01:14:30,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 01:14:30,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516949873] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:30,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 01:14:30,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-24 01:14:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909061953] [2024-10-24 01:14:30,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:30,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:14:30,866 INFO L87 Difference]: Start difference. First operand 3620 states and 4861 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:31,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:31,293 INFO L93 Difference]: Finished difference Result 8366 states and 11409 transitions. [2024-10-24 01:14:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:31,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2024-10-24 01:14:31,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:31,305 INFO L225 Difference]: With dead ends: 8366 [2024-10-24 01:14:31,305 INFO L226 Difference]: Without dead ends: 4909 [2024-10-24 01:14:31,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:14:31,312 INFO L432 NwaCegarLoop]: 392 mSDtfsCounter, 194 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:31,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 588 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:14:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2024-10-24 01:14:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4581. [2024-10-24 01:14:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 4575 states have (on average 1.3077595628415302) internal successors, (5983), 4579 states have internal predecessors, (5983), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:31,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 5988 transitions. [2024-10-24 01:14:31,532 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 5988 transitions. Word has length 153 [2024-10-24 01:14:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:31,533 INFO L471 AbstractCegarLoop]: Abstraction has 4581 states and 5988 transitions. [2024-10-24 01:14:31,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:31,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 5988 transitions. [2024-10-24 01:14:31,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-24 01:14:31,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:31,536 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:31,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 01:14:31,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:31,737 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:31,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1388898480, now seen corresponding path program 1 times [2024-10-24 01:14:31,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:31,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736546334] [2024-10-24 01:14:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:31,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 01:14:32,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:32,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736546334] [2024-10-24 01:14:32,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736546334] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:32,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868455677] [2024-10-24 01:14:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:32,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:32,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:32,063 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) [2024-10-24 01:14:32,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 01:14:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:32,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 01:14:32,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 01:14:32,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:14:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 01:14:32,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868455677] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:14:32,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:14:32,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-10-24 01:14:32,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688389190] [2024-10-24 01:14:32,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:14:32,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 01:14:32,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 01:14:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:14:32,558 INFO L87 Difference]: Start difference. First operand 4581 states and 5988 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:33,211 INFO L93 Difference]: Finished difference Result 12810 states and 16771 transitions. [2024-10-24 01:14:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 01:14:33,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2024-10-24 01:14:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:33,225 INFO L225 Difference]: With dead ends: 12810 [2024-10-24 01:14:33,225 INFO L226 Difference]: Without dead ends: 8392 [2024-10-24 01:14:33,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-10-24 01:14:33,232 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 874 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:33,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 3624 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 01:14:33,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8392 states. [2024-10-24 01:14:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8392 to 7125. [2024-10-24 01:14:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7125 states, 7119 states have (on average 1.3215339233038348) internal successors, (9408), 7123 states have internal predecessors, (9408), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7125 states to 7125 states and 9413 transitions. [2024-10-24 01:14:33,469 INFO L78 Accepts]: Start accepts. Automaton has 7125 states and 9413 transitions. Word has length 155 [2024-10-24 01:14:33,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:33,470 INFO L471 AbstractCegarLoop]: Abstraction has 7125 states and 9413 transitions. [2024-10-24 01:14:33,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:33,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7125 states and 9413 transitions. [2024-10-24 01:14:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-10-24 01:14:33,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:33,473 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:33,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 01:14:33,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:33,678 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:33,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1486402490, now seen corresponding path program 1 times [2024-10-24 01:14:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:33,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519338353] [2024-10-24 01:14:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 12 proven. 185 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:14:34,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:34,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519338353] [2024-10-24 01:14:34,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519338353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:34,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448128267] [2024-10-24 01:14:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:34,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:34,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:34,081 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) [2024-10-24 01:14:34,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 01:14:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:34,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 01:14:34,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:14:34,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:14:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 01:14:34,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448128267] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:14:34,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:14:34,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-10-24 01:14:34,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785707296] [2024-10-24 01:14:34,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:14:34,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 01:14:34,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:34,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 01:14:34,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-10-24 01:14:34,773 INFO L87 Difference]: Start difference. First operand 7125 states and 9413 transitions. Second operand has 14 states, 14 states have (on average 24.285714285714285) internal successors, (340), 14 states have internal predecessors, (340), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:35,816 INFO L93 Difference]: Finished difference Result 18369 states and 24117 transitions. [2024-10-24 01:14:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-24 01:14:35,817 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.285714285714285) internal successors, (340), 14 states have internal predecessors, (340), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2024-10-24 01:14:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:35,833 INFO L225 Difference]: With dead ends: 18369 [2024-10-24 01:14:35,834 INFO L226 Difference]: Without dead ends: 11407 [2024-10-24 01:14:35,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 01:14:35,842 INFO L432 NwaCegarLoop]: 971 mSDtfsCounter, 2951 mSDsluCounter, 7478 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2951 SdHoareTripleChecker+Valid, 8449 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:35,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2951 Valid, 8449 Invalid, 816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:14:35,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11407 states. [2024-10-24 01:14:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11407 to 9178. [2024-10-24 01:14:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9178 states, 9172 states have (on average 1.327845617095508) internal successors, (12179), 9176 states have internal predecessors, (12179), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9178 states to 9178 states and 12184 transitions. [2024-10-24 01:14:36,128 INFO L78 Accepts]: Start accepts. Automaton has 9178 states and 12184 transitions. Word has length 250 [2024-10-24 01:14:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:36,129 INFO L471 AbstractCegarLoop]: Abstraction has 9178 states and 12184 transitions. [2024-10-24 01:14:36,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.285714285714285) internal successors, (340), 14 states have internal predecessors, (340), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9178 states and 12184 transitions. [2024-10-24 01:14:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-10-24 01:14:36,134 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:36,134 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:36,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 01:14:36,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:36,335 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:36,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1990293476, now seen corresponding path program 1 times [2024-10-24 01:14:36,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:36,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771029093] [2024-10-24 01:14:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:36,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-10-24 01:14:36,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:36,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771029093] [2024-10-24 01:14:36,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771029093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:36,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:36,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:14:36,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575089097] [2024-10-24 01:14:36,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:36,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:14:36,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:36,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:14:36,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:14:36,432 INFO L87 Difference]: Start difference. First operand 9178 states and 12184 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:36,588 INFO L93 Difference]: Finished difference Result 10362 states and 13536 transitions. [2024-10-24 01:14:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:14:36,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2024-10-24 01:14:36,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:36,594 INFO L225 Difference]: With dead ends: 10362 [2024-10-24 01:14:36,594 INFO L226 Difference]: Without dead ends: 1243 [2024-10-24 01:14:36,599 INFO L431 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 [2024-10-24 01:14:36,601 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 128 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:36,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 352 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1243 states. [2024-10-24 01:14:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1243 to 880. [2024-10-24 01:14:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 876 states have (on average 1.0787671232876712) internal successors, (945), 878 states have internal predecessors, (945), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 948 transitions. [2024-10-24 01:14:36,643 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 948 transitions. Word has length 347 [2024-10-24 01:14:36,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:36,644 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 948 transitions. [2024-10-24 01:14:36,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 948 transitions. [2024-10-24 01:14:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-10-24 01:14:36,648 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:36,649 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:36,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 01:14:36,649 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:36,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:36,650 INFO L85 PathProgramCache]: Analyzing trace with hash 553876542, now seen corresponding path program 1 times [2024-10-24 01:14:36,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:36,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233580486] [2024-10-24 01:14:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:36,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-10-24 01:14:36,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:36,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233580486] [2024-10-24 01:14:36,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233580486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:36,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:36,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 01:14:36,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943706369] [2024-10-24 01:14:36,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:36,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 01:14:36,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:36,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 01:14:36,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:14:36,864 INFO L87 Difference]: Start difference. First operand 880 states and 948 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:37,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:37,027 INFO L93 Difference]: Finished difference Result 1258 states and 1372 transitions. [2024-10-24 01:14:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 01:14:37,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2024-10-24 01:14:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:37,033 INFO L225 Difference]: With dead ends: 1258 [2024-10-24 01:14:37,034 INFO L226 Difference]: Without dead ends: 1066 [2024-10-24 01:14:37,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-24 01:14:37,035 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 214 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:37,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1372 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2024-10-24 01:14:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 943. [2024-10-24 01:14:37,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 939 states have (on average 1.0809371671991481) internal successors, (1015), 941 states have internal predecessors, (1015), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1018 transitions. [2024-10-24 01:14:37,076 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1018 transitions. Word has length 348 [2024-10-24 01:14:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:37,077 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1018 transitions. [2024-10-24 01:14:37,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1018 transitions. [2024-10-24 01:14:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-10-24 01:14:37,083 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:37,083 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:37,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 01:14:37,085 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:37,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1368057438, now seen corresponding path program 1 times [2024-10-24 01:14:37,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:37,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175758586] [2024-10-24 01:14:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:37,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2024-10-24 01:14:37,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:37,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175758586] [2024-10-24 01:14:37,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175758586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:37,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:14:37,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:14:37,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304143421] [2024-10-24 01:14:37,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:37,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:14:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:37,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:14:37,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:14:37,235 INFO L87 Difference]: Start difference. First operand 943 states and 1018 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:37,330 INFO L93 Difference]: Finished difference Result 1128 states and 1220 transitions. [2024-10-24 01:14:37,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 01:14:37,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 349 [2024-10-24 01:14:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:37,335 INFO L225 Difference]: With dead ends: 1128 [2024-10-24 01:14:37,336 INFO L226 Difference]: Without dead ends: 936 [2024-10-24 01:14:37,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:14:37,337 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 172 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:37,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 778 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-10-24 01:14:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 932. [2024-10-24 01:14:37,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 929 states have (on average 1.068891280947255) internal successors, (993), 930 states have internal predecessors, (993), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 995 transitions. [2024-10-24 01:14:37,377 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 995 transitions. Word has length 349 [2024-10-24 01:14:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:37,378 INFO L471 AbstractCegarLoop]: Abstraction has 932 states and 995 transitions. [2024-10-24 01:14:37,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 995 transitions. [2024-10-24 01:14:37,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-10-24 01:14:37,381 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:37,381 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:37,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 01:14:37,381 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:37,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:37,382 INFO L85 PathProgramCache]: Analyzing trace with hash -898019086, now seen corresponding path program 1 times [2024-10-24 01:14:37,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:37,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231909843] [2024-10-24 01:14:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:37,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 66 proven. 186 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-24 01:14:38,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:38,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231909843] [2024-10-24 01:14:38,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231909843] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:38,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559993533] [2024-10-24 01:14:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:38,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:38,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:38,045 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) [2024-10-24 01:14:38,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 01:14:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:38,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 01:14:38,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 66 proven. 186 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-24 01:14:38,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:14:39,368 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 20 proven. 232 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-10-24 01:14:39,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559993533] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:14:39,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:14:39,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 26 [2024-10-24 01:14:39,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965639735] [2024-10-24 01:14:39,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:14:39,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 01:14:39,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:39,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 01:14:39,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2024-10-24 01:14:39,371 INFO L87 Difference]: Start difference. First operand 932 states and 995 transitions. Second operand has 26 states, 26 states have (on average 14.461538461538462) internal successors, (376), 26 states have internal predecessors, (376), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:39,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:39,872 INFO L93 Difference]: Finished difference Result 1056 states and 1123 transitions. [2024-10-24 01:14:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-24 01:14:39,873 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 14.461538461538462) internal successors, (376), 26 states have internal predecessors, (376), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 404 [2024-10-24 01:14:39,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:39,876 INFO L225 Difference]: With dead ends: 1056 [2024-10-24 01:14:39,876 INFO L226 Difference]: Without dead ends: 1053 [2024-10-24 01:14:39,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 801 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2024-10-24 01:14:39,878 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 784 mSDsluCounter, 5732 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 6090 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:39,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 6090 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 01:14:39,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2024-10-24 01:14:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1026. [2024-10-24 01:14:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1023 states have (on average 1.0664711632453567) internal successors, (1091), 1024 states have internal predecessors, (1091), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1093 transitions. [2024-10-24 01:14:39,915 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1093 transitions. Word has length 404 [2024-10-24 01:14:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:39,915 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1093 transitions. [2024-10-24 01:14:39,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 14.461538461538462) internal successors, (376), 26 states have internal predecessors, (376), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:39,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1093 transitions. [2024-10-24 01:14:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-10-24 01:14:39,918 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:39,918 INFO L215 NwaCegarLoop]: trace histogram [9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:39,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 01:14:40,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:40,119 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:40,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash -835962693, now seen corresponding path program 1 times [2024-10-24 01:14:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:40,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813642461] [2024-10-24 01:14:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:40,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 203 proven. 45 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2024-10-24 01:14:40,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:40,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813642461] [2024-10-24 01:14:40,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813642461] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:40,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757975706] [2024-10-24 01:14:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:40,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:40,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:40,516 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) [2024-10-24 01:14:40,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 01:14:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:40,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 01:14:40,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 203 proven. 45 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2024-10-24 01:14:40,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:14:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 203 proven. 45 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2024-10-24 01:14:41,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757975706] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:14:41,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:14:41,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-10-24 01:14:41,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346672490] [2024-10-24 01:14:41,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:14:41,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 01:14:41,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:41,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 01:14:41,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 01:14:41,056 INFO L87 Difference]: Start difference. First operand 1026 states and 1093 transitions. Second operand has 9 states, 9 states have (on average 29.11111111111111) internal successors, (262), 9 states have internal predecessors, (262), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:41,270 INFO L93 Difference]: Finished difference Result 1400 states and 1495 transitions. [2024-10-24 01:14:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 01:14:41,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.11111111111111) internal successors, (262), 9 states have internal predecessors, (262), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 449 [2024-10-24 01:14:41,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:41,275 INFO L225 Difference]: With dead ends: 1400 [2024-10-24 01:14:41,275 INFO L226 Difference]: Without dead ends: 1219 [2024-10-24 01:14:41,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-24 01:14:41,276 INFO L432 NwaCegarLoop]: 335 mSDtfsCounter, 384 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:41,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 2311 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-10-24 01:14:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1107. [2024-10-24 01:14:41,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1104 states have (on average 1.0661231884057971) internal successors, (1177), 1105 states have internal predecessors, (1177), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1179 transitions. [2024-10-24 01:14:41,328 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1179 transitions. Word has length 449 [2024-10-24 01:14:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:41,329 INFO L471 AbstractCegarLoop]: Abstraction has 1107 states and 1179 transitions. [2024-10-24 01:14:41,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.11111111111111) internal successors, (262), 9 states have internal predecessors, (262), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1179 transitions. [2024-10-24 01:14:41,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-10-24 01:14:41,333 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:41,333 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:41,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 01:14:41,537 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,SelfDestructingSolverStorable25 [2024-10-24 01:14:41,538 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:41,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:41,538 INFO L85 PathProgramCache]: Analyzing trace with hash -562440443, now seen corresponding path program 1 times [2024-10-24 01:14:41,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:41,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368517015] [2024-10-24 01:14:41,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:41,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 138 proven. 518 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 01:14:42,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368517015] [2024-10-24 01:14:42,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368517015] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4293888] [2024-10-24 01:14:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:42,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:42,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:42,520 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) [2024-10-24 01:14:42,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 01:14:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:42,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-24 01:14:42,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 162 proven. 494 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 01:14:43,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:14:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 25 proven. 631 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-24 01:14:44,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4293888] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:14:44,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:14:44,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 30 [2024-10-24 01:14:44,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617339211] [2024-10-24 01:14:44,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:14:44,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-24 01:14:44,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:44,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-24 01:14:44,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2024-10-24 01:14:44,211 INFO L87 Difference]: Start difference. First operand 1107 states and 1179 transitions. Second operand has 30 states, 30 states have (on average 21.6) internal successors, (648), 30 states have internal predecessors, (648), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:44,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:44,876 INFO L93 Difference]: Finished difference Result 1237 states and 1313 transitions. [2024-10-24 01:14:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 01:14:44,877 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 21.6) internal successors, (648), 30 states have internal predecessors, (648), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 506 [2024-10-24 01:14:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:44,881 INFO L225 Difference]: With dead ends: 1237 [2024-10-24 01:14:44,881 INFO L226 Difference]: Without dead ends: 1234 [2024-10-24 01:14:44,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 1006 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2024-10-24 01:14:44,882 INFO L432 NwaCegarLoop]: 551 mSDtfsCounter, 1017 mSDsluCounter, 9516 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:44,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 10067 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:14:44,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2024-10-24 01:14:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1201. [2024-10-24 01:14:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1198 states have (on average 1.0642737896494157) internal successors, (1275), 1199 states have internal predecessors, (1275), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1277 transitions. [2024-10-24 01:14:44,921 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1277 transitions. Word has length 506 [2024-10-24 01:14:44,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:44,922 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1277 transitions. [2024-10-24 01:14:44,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 21.6) internal successors, (648), 30 states have internal predecessors, (648), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1277 transitions. [2024-10-24 01:14:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-10-24 01:14:44,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:44,926 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:44,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 01:14:45,126 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,SelfDestructingSolverStorable26 [2024-10-24 01:14:45,127 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:45,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:45,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1842547320, now seen corresponding path program 1 times [2024-10-24 01:14:45,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:45,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132521962] [2024-10-24 01:14:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:45,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 25 proven. 715 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-24 01:14:46,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:46,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132521962] [2024-10-24 01:14:46,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132521962] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:46,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724235038] [2024-10-24 01:14:46,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:46,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:46,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:46,252 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) [2024-10-24 01:14:46,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 01:14:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:46,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 01:14:46,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 343 proven. 200 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-10-24 01:14:46,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:14:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 343 proven. 200 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-10-24 01:14:47,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724235038] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:14:47,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:14:47,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 11] total 25 [2024-10-24 01:14:47,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801781624] [2024-10-24 01:14:47,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:14:47,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-24 01:14:47,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:47,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-24 01:14:47,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=549, Unknown=0, NotChecked=0, Total=600 [2024-10-24 01:14:47,020 INFO L87 Difference]: Start difference. First operand 1201 states and 1277 transitions. Second operand has 25 states, 25 states have (on average 29.08) internal successors, (727), 25 states have internal predecessors, (727), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:48,481 INFO L93 Difference]: Finished difference Result 1885 states and 2005 transitions. [2024-10-24 01:14:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-24 01:14:48,481 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 29.08) internal successors, (727), 25 states have internal predecessors, (727), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 551 [2024-10-24 01:14:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:48,486 INFO L225 Difference]: With dead ends: 1885 [2024-10-24 01:14:48,486 INFO L226 Difference]: Without dead ends: 1704 [2024-10-24 01:14:48,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1117 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=568, Invalid=5438, Unknown=0, NotChecked=0, Total=6006 [2024-10-24 01:14:48,488 INFO L432 NwaCegarLoop]: 642 mSDtfsCounter, 1652 mSDsluCounter, 12650 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 13292 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:48,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 13292 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 01:14:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2024-10-24 01:14:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1378. [2024-10-24 01:14:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1375 states have (on average 1.0632727272727274) internal successors, (1462), 1376 states have internal predecessors, (1462), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1464 transitions. [2024-10-24 01:14:48,557 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1464 transitions. Word has length 551 [2024-10-24 01:14:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:48,558 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1464 transitions. [2024-10-24 01:14:48,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 29.08) internal successors, (727), 25 states have internal predecessors, (727), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1464 transitions. [2024-10-24 01:14:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2024-10-24 01:14:48,562 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:48,562 INFO L215 NwaCegarLoop]: trace histogram [12, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:48,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-24 01:14:48,763 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,SelfDestructingSolverStorable27 [2024-10-24 01:14:48,764 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:48,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:48,764 INFO L85 PathProgramCache]: Analyzing trace with hash 439474753, now seen corresponding path program 1 times [2024-10-24 01:14:48,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:48,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361556604] [2024-10-24 01:14:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:48,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 82 proven. 988 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 01:14:50,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:50,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361556604] [2024-10-24 01:14:50,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361556604] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:50,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433167576] [2024-10-24 01:14:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:50,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:50,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:50,911 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) [2024-10-24 01:14:50,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 01:14:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:51,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-24 01:14:51,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 169 proven. 901 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 01:14:52,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 01:14:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1087 backedges. 30 proven. 1040 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 01:14:52,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433167576] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 01:14:52,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 01:14:52,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 38 [2024-10-24 01:14:52,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738693044] [2024-10-24 01:14:52,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 01:14:52,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-24 01:14:52,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-24 01:14:52,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2024-10-24 01:14:52,982 INFO L87 Difference]: Start difference. First operand 1378 states and 1464 transitions. Second operand has 38 states, 38 states have (on average 24.236842105263158) internal successors, (921), 38 states have internal predecessors, (921), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:54,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:54,209 INFO L93 Difference]: Finished difference Result 2570 states and 2723 transitions. [2024-10-24 01:14:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-24 01:14:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 24.236842105263158) internal successors, (921), 38 states have internal predecessors, (921), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 609 [2024-10-24 01:14:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:54,215 INFO L225 Difference]: With dead ends: 2570 [2024-10-24 01:14:54,215 INFO L226 Difference]: Without dead ends: 2567 [2024-10-24 01:14:54,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1270 GetRequests, 1211 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=283, Invalid=3377, Unknown=0, NotChecked=0, Total=3660 [2024-10-24 01:14:54,217 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 1163 mSDsluCounter, 21859 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 22637 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:54,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 22637 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 01:14:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2024-10-24 01:14:54,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2074. [2024-10-24 01:14:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2071 states have (on average 1.0598744567841623) internal successors, (2195), 2072 states have internal predecessors, (2195), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:54,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2197 transitions. [2024-10-24 01:14:54,289 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2197 transitions. Word has length 609 [2024-10-24 01:14:54,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:54,289 INFO L471 AbstractCegarLoop]: Abstraction has 2074 states and 2197 transitions. [2024-10-24 01:14:54,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 24.236842105263158) internal successors, (921), 38 states have internal predecessors, (921), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:54,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2197 transitions. [2024-10-24 01:14:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2024-10-24 01:14:54,295 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:14:54,295 INFO L215 NwaCegarLoop]: trace histogram [13, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:54,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-24 01:14:54,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-24 01:14:54,496 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:14:54,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:14:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash -534576180, now seen corresponding path program 1 times [2024-10-24 01:14:54,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:14:54,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706890879] [2024-10-24 01:14:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:54,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:14:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 731 proven. 218 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-10-24 01:14:55,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:14:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706890879] [2024-10-24 01:14:55,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706890879] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 01:14:55,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459091048] [2024-10-24 01:14:55,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:14:55,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:14:55,017 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 01:14:55,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 01:14:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:14:55,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 01:14:55,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 01:14:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 949 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-10-24 01:14:55,629 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 01:14:55,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459091048] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:14:55,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 01:14:55,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 11 [2024-10-24 01:14:55,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621150225] [2024-10-24 01:14:55,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:14:55,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 01:14:55,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:14:55,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 01:14:55,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-24 01:14:55,631 INFO L87 Difference]: Start difference. First operand 2074 states and 2197 transitions. Second operand has 9 states, 9 states have (on average 51.44444444444444) internal successors, (463), 9 states have internal predecessors, (463), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:14:55,814 INFO L93 Difference]: Finished difference Result 2087 states and 2210 transitions. [2024-10-24 01:14:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 01:14:55,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 51.44444444444444) internal successors, (463), 9 states have internal predecessors, (463), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 654 [2024-10-24 01:14:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:14:55,818 INFO L225 Difference]: With dead ends: 2087 [2024-10-24 01:14:55,818 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 01:14:55,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2024-10-24 01:14:55,820 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 553 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:14:55,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 2342 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:14:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 01:14:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 01:14:55,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 01:14:55,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 654 [2024-10-24 01:14:55,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:14:55,822 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 01:14:55,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.44444444444444) internal successors, (463), 9 states have internal predecessors, (463), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 01:14:55,822 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 01:14:55,822 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 01:14:55,825 INFO L782 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-24 01:14:55,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 01:14:56,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 01:14:56,029 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:14:56,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.