./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 64bit --witnessprinter.graph.data.programhash bd8c06ba54c8d75ab2045420726c9cc38baf19bb8d27adf60901b88a40183e6e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 05:54:11,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 05:54:11,224 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-11 05:54:11,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 05:54:11,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 05:54:11,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 05:54:11,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 05:54:11,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 05:54:11,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 05:54:11,252 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 05:54:11,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 05:54:11,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 05:54:11,253 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 05:54:11,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 05:54:11,254 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 05:54:11,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 05:54:11,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 05:54:11,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 05:54:11,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 05:54:11,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 05:54:11,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 05:54:11,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 05:54:11,258 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 05:54:11,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 05:54:11,259 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 05:54:11,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 05:54:11,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 05:54:11,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 05:54:11,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 05:54:11,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:54:11,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 05:54:11,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 05:54:11,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 05:54:11,261 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 05:54:11,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 05:54:11,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 05:54:11,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 05:54:11,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 05:54:11,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 05:54:11,263 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd8c06ba54c8d75ab2045420726c9cc38baf19bb8d27adf60901b88a40183e6e [2024-10-11 05:54:11,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 05:54:11,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 05:54:11,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 05:54:11,581 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 05:54:11,581 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 05:54:11,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c [2024-10-11 05:54:13,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 05:54:13,470 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 05:54:13,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c [2024-10-11 05:54:13,505 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a12481bb8/0f73ddb5dc8045a68cf2aa58eaba43e6/FLAGcddbc7d61 [2024-10-11 05:54:13,523 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a12481bb8/0f73ddb5dc8045a68cf2aa58eaba43e6 [2024-10-11 05:54:13,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 05:54:13,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 05:54:13,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 05:54:13,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 05:54:13,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 05:54:13,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:54:13" (1/1) ... [2024-10-11 05:54:13,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ec7b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:13, skipping insertion in model container [2024-10-11 05:54:13,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:54:13" (1/1) ... [2024-10-11 05:54:13,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 05:54:13,996 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/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c[1177,1190] [2024-10-11 05:54:14,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:54:14,755 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 05:54:14,768 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/hardware-verification-bv/btor2c-lazyMod.cambridge.4.prop2-back-serstep.c[1177,1190] [2024-10-11 05:54:15,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 05:54:15,179 INFO L204 MainTranslator]: Completed translation [2024-10-11 05:54:15,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15 WrapperNode [2024-10-11 05:54:15,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 05:54:15,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 05:54:15,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 05:54:15,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 05:54:15,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:15,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:17,347 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 18872 [2024-10-11 05:54:17,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 05:54:17,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 05:54:17,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 05:54:17,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 05:54:17,360 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:17,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:17,958 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:18,346 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]. [2024-10-11 05:54:18,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:18,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:19,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:19,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:19,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:19,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:19,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 05:54:19,740 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 05:54:19,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 05:54:19,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 05:54:19,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (1/1) ... [2024-10-11 05:54:19,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 05:54:19,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 05:54:19,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 05:54:19,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 05:54:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 05:54:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 05:54:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 05:54:19,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 05:54:20,752 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 05:54:20,755 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 05:54:51,747 INFO L? ?]: Removed 10444 outVars from TransFormulas that were not future-live. [2024-10-11 05:54:51,747 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 05:54:52,051 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 05:54:52,052 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 05:54:52,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:54:52 BoogieIcfgContainer [2024-10-11 05:54:52,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 05:54:52,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 05:54:52,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 05:54:52,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 05:54:52,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:54:13" (1/3) ... [2024-10-11 05:54:52,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78782c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:54:52, skipping insertion in model container [2024-10-11 05:54:52,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:54:15" (2/3) ... [2024-10-11 05:54:52,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78782c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:54:52, skipping insertion in model container [2024-10-11 05:54:52,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:54:52" (3/3) ... [2024-10-11 05:54:52,064 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.4.prop2-back-serstep.c [2024-10-11 05:54:52,081 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 05:54:52,081 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 05:54:52,378 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 05:54:52,387 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;@548d14b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 05:54:52,388 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 05:54:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 6382 states, 6380 states have (on average 1.5057993730407524) internal successors, (9607), 6381 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:54:52,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-10-11 05:54:52,450 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:54:52,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 05:54:52,452 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:54:52,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:54:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1800517901, now seen corresponding path program 1 times [2024-10-11 05:54:52,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:54:52,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435582376] [2024-10-11 05:54:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:54:52,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:54:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:54:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 05:54:54,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:54:54,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435582376] [2024-10-11 05:54:54,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435582376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:54:54,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:54:54,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 05:54:54,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128307667] [2024-10-11 05:54:54,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:54:54,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 05:54:54,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:54:54,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 05:54:54,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 05:54:54,963 INFO L87 Difference]: Start difference. First operand has 6382 states, 6380 states have (on average 1.5057993730407524) internal successors, (9607), 6381 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 80.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:55:01,508 INFO L93 Difference]: Finished difference Result 18682 states and 28129 transitions. [2024-10-11 05:55:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 05:55:01,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 80.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 400 [2024-10-11 05:55:01,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:55:01,586 INFO L225 Difference]: With dead ends: 18682 [2024-10-11 05:55:01,586 INFO L226 Difference]: Without dead ends: 12481 [2024-10-11 05:55:01,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 05:55:01,615 INFO L432 NwaCegarLoop]: 7593 mSDtfsCounter, 9187 mSDsluCounter, 22631 mSDsCounter, 0 mSdLazyCounter, 7925 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9187 SdHoareTripleChecker+Valid, 30224 SdHoareTripleChecker+Invalid, 7926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-10-11 05:55:01,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9187 Valid, 30224 Invalid, 7926 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7925 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-10-11 05:55:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12481 states. [2024-10-11 05:55:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12481 to 6736. [2024-10-11 05:55:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6736 states, 6735 states have (on average 1.5049740163325909) internal successors, (10136), 6735 states have internal predecessors, (10136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6736 states to 6736 states and 10136 transitions. [2024-10-11 05:55:01,926 INFO L78 Accepts]: Start accepts. Automaton has 6736 states and 10136 transitions. Word has length 400 [2024-10-11 05:55:01,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:55:01,932 INFO L471 AbstractCegarLoop]: Abstraction has 6736 states and 10136 transitions. [2024-10-11 05:55:01,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6736 states and 10136 transitions. [2024-10-11 05:55:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-10-11 05:55:01,941 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:55:01,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 05:55:01,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 05:55:01,942 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:55:01,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:55:01,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1087478070, now seen corresponding path program 1 times [2024-10-11 05:55:01,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:55:01,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204375531] [2024-10-11 05:55:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:55:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:55:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:55:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 05:55:03,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:55:03,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204375531] [2024-10-11 05:55:03,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204375531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:55:03,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:55:03,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 05:55:03,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251556374] [2024-10-11 05:55:03,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:55:03,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 05:55:03,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:55:03,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 05:55:03,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 05:55:03,126 INFO L87 Difference]: Start difference. First operand 6736 states and 10136 transitions. Second operand has 6 states, 6 states have (on average 67.0) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:08,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:55:08,041 INFO L93 Difference]: Finished difference Result 18825 states and 28336 transitions. [2024-10-11 05:55:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 05:55:08,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 67.0) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2024-10-11 05:55:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:55:08,092 INFO L225 Difference]: With dead ends: 18825 [2024-10-11 05:55:08,092 INFO L226 Difference]: Without dead ends: 12625 [2024-10-11 05:55:08,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 05:55:08,108 INFO L432 NwaCegarLoop]: 7940 mSDtfsCounter, 18187 mSDsluCounter, 25104 mSDsCounter, 0 mSdLazyCounter, 5982 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18187 SdHoareTripleChecker+Valid, 33044 SdHoareTripleChecker+Invalid, 6052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 5982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-11 05:55:08,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18187 Valid, 33044 Invalid, 6052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 5982 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-10-11 05:55:08,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12625 states. [2024-10-11 05:55:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12625 to 6743. [2024-10-11 05:55:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6743 states, 6742 states have (on average 1.5047463660634826) internal successors, (10145), 6742 states have internal predecessors, (10145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:08,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6743 states to 6743 states and 10145 transitions. [2024-10-11 05:55:08,341 INFO L78 Accepts]: Start accepts. Automaton has 6743 states and 10145 transitions. Word has length 402 [2024-10-11 05:55:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:55:08,343 INFO L471 AbstractCegarLoop]: Abstraction has 6743 states and 10145 transitions. [2024-10-11 05:55:08,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.0) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:08,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6743 states and 10145 transitions. [2024-10-11 05:55:08,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-10-11 05:55:08,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:55:08,352 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 05:55:08,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 05:55:08,354 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:55:08,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:55:08,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1773043033, now seen corresponding path program 1 times [2024-10-11 05:55:08,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:55:08,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378124644] [2024-10-11 05:55:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:55:08,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:55:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:55:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 05:55:09,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:55:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378124644] [2024-10-11 05:55:09,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378124644] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:55:09,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:55:09,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 05:55:09,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048095385] [2024-10-11 05:55:09,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:55:09,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 05:55:09,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:55:09,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 05:55:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 05:55:09,760 INFO L87 Difference]: Start difference. First operand 6743 states and 10145 transitions. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:55:09,925 INFO L93 Difference]: Finished difference Result 6747 states and 10149 transitions. [2024-10-11 05:55:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 05:55:09,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2024-10-11 05:55:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:55:09,956 INFO L225 Difference]: With dead ends: 6747 [2024-10-11 05:55:09,956 INFO L226 Difference]: Without dead ends: 6745 [2024-10-11 05:55:09,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 05:55:09,962 INFO L432 NwaCegarLoop]: 9602 mSDtfsCounter, 0 mSDsluCounter, 19199 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28801 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 05:55:09,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28801 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 05:55:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6745 states. [2024-10-11 05:55:10,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6745 to 6745. [2024-10-11 05:55:10,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6745 states, 6744 states have (on average 1.504596678529063) internal successors, (10147), 6744 states have internal predecessors, (10147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 10147 transitions. [2024-10-11 05:55:10,124 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 10147 transitions. Word has length 403 [2024-10-11 05:55:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:55:10,125 INFO L471 AbstractCegarLoop]: Abstraction has 6745 states and 10147 transitions. [2024-10-11 05:55:10,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 10147 transitions. [2024-10-11 05:55:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-10-11 05:55:10,130 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:55:10,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 05:55:10,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 05:55:10,133 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:55:10,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:55:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash 871938552, now seen corresponding path program 1 times [2024-10-11 05:55:10,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:55:10,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345710720] [2024-10-11 05:55:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:55:10,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:55:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:55:11,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 05:55:11,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:55:11,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345710720] [2024-10-11 05:55:11,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345710720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:55:11,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:55:11,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 05:55:11,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200462799] [2024-10-11 05:55:11,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:55:11,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 05:55:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:55:11,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 05:55:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 05:55:11,016 INFO L87 Difference]: Start difference. First operand 6745 states and 10147 transitions. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:55:11,163 INFO L93 Difference]: Finished difference Result 12949 states and 19486 transitions. [2024-10-11 05:55:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 05:55:11,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 404 [2024-10-11 05:55:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:55:11,181 INFO L225 Difference]: With dead ends: 12949 [2024-10-11 05:55:11,181 INFO L226 Difference]: Without dead ends: 6747 [2024-10-11 05:55:11,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 05:55:11,194 INFO L432 NwaCegarLoop]: 9602 mSDtfsCounter, 0 mSDsluCounter, 19196 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28798 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 05:55:11,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28798 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 05:55:11,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6747 states. [2024-10-11 05:55:11,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6747 to 6747. [2024-10-11 05:55:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6747 states, 6746 states have (on average 1.5044470797509635) internal successors, (10149), 6746 states have internal predecessors, (10149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:11,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6747 states to 6747 states and 10149 transitions. [2024-10-11 05:55:11,327 INFO L78 Accepts]: Start accepts. Automaton has 6747 states and 10149 transitions. Word has length 404 [2024-10-11 05:55:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:55:11,328 INFO L471 AbstractCegarLoop]: Abstraction has 6747 states and 10149 transitions. [2024-10-11 05:55:11,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6747 states and 10149 transitions. [2024-10-11 05:55:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-10-11 05:55:11,331 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:55:11,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 05:55:11,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 05:55:11,332 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:55:11,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:55:11,332 INFO L85 PathProgramCache]: Analyzing trace with hash 162327968, now seen corresponding path program 1 times [2024-10-11 05:55:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:55:11,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885118660] [2024-10-11 05:55:11,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:55:11,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 05:55:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 05:55:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 05:55:12,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 05:55:12,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885118660] [2024-10-11 05:55:12,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885118660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 05:55:12,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 05:55:12,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 05:55:12,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794618024] [2024-10-11 05:55:12,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 05:55:12,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 05:55:12,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 05:55:12,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 05:55:12,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 05:55:12,281 INFO L87 Difference]: Start difference. First operand 6747 states and 10149 transitions. Second operand has 5 states, 5 states have (on average 81.0) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 05:55:12,613 INFO L93 Difference]: Finished difference Result 18779 states and 28263 transitions. [2024-10-11 05:55:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 05:55:12,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2024-10-11 05:55:12,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 05:55:12,640 INFO L225 Difference]: With dead ends: 18779 [2024-10-11 05:55:12,641 INFO L226 Difference]: Without dead ends: 12575 [2024-10-11 05:55:12,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 05:55:12,654 INFO L432 NwaCegarLoop]: 9600 mSDtfsCounter, 9189 mSDsluCounter, 28526 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9189 SdHoareTripleChecker+Valid, 38126 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 05:55:12,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9189 Valid, 38126 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 05:55:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12575 states. [2024-10-11 05:55:12,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12575 to 6991. [2024-10-11 05:55:12,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 6990 states have (on average 1.5041487839771102) internal successors, (10514), 6990 states have internal predecessors, (10514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 10514 transitions. [2024-10-11 05:55:12,854 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 10514 transitions. Word has length 405 [2024-10-11 05:55:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 05:55:12,856 INFO L471 AbstractCegarLoop]: Abstraction has 6991 states and 10514 transitions. [2024-10-11 05:55:12,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 05:55:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 10514 transitions. [2024-10-11 05:55:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3379 [2024-10-11 05:55:12,989 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 05:55:12,992 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 05:55:12,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 05:55:12,992 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 05:55:12,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 05:55:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1887266756, now seen corresponding path program 1 times [2024-10-11 05:55:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 05:55:12,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284558965] [2024-10-11 05:55:12,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 05:55:12,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms