./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.cav14_example_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash fb8ca5e5ce2ed40fdd0ad3d69b0bd96c83a6daf11d842e9766da8dc50e36012a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 22:36:05,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 22:36:05,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-12 22:36:05,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 22:36:05,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 22:36:05,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 22:36:05,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 22:36:05,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 22:36:05,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 22:36:05,254 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 22:36:05,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 22:36:05,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 22:36:05,255 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 22:36:05,255 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 22:36:05,255 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 22:36:05,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 22:36:05,256 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 22:36:05,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 22:36:05,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 22:36:05,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 22:36:05,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 22:36:05,258 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 22:36:05,258 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 22:36:05,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 22:36:05,258 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 22:36:05,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 22:36:05,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 22:36:05,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 22:36:05,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 22:36:05,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 22:36:05,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 22:36:05,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 22:36:05,260 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 22:36:05,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 22:36:05,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 22:36:05,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 22:36:05,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 22:36:05,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 22:36:05,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 22:36:05,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb8ca5e5ce2ed40fdd0ad3d69b0bd96c83a6daf11d842e9766da8dc50e36012a [2024-10-12 22:36:05,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 22:36:05,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 22:36:05,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 22:36:05,487 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 22:36:05,487 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 22:36:05,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c [2024-10-12 22:36:06,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 22:36:06,860 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 22:36:06,860 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c [2024-10-12 22:36:06,866 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd3df65e9/2d99193528524786a971061be3aba07b/FLAG6fa85e553 [2024-10-12 22:36:07,266 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd3df65e9/2d99193528524786a971061be3aba07b [2024-10-12 22:36:07,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 22:36:07,269 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 22:36:07,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 22:36:07,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 22:36:07,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 22:36:07,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4973441b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07, skipping insertion in model container [2024-10-12 22:36:07,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 22:36:07,434 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.cav14_example_v.c[1255,1268] [2024-10-12 22:36:07,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 22:36:07,495 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 22:36:07,506 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.cav14_example_v.c[1255,1268] [2024-10-12 22:36:07,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 22:36:07,546 INFO L204 MainTranslator]: Completed translation [2024-10-12 22:36:07,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07 WrapperNode [2024-10-12 22:36:07,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 22:36:07,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 22:36:07,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 22:36:07,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 22:36:07,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,564 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,612 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 188 [2024-10-12 22:36:07,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 22:36:07,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 22:36:07,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 22:36:07,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 22:36:07,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,638 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]. [2024-10-12 22:36:07,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,662 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 22:36:07,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 22:36:07,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 22:36:07,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 22:36:07,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (1/1) ... [2024-10-12 22:36:07,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 22:36:07,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:36:07,720 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) [2024-10-12 22:36:07,724 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 [2024-10-12 22:36:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 22:36:07,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 22:36:07,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 22:36:07,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 22:36:07,843 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 22:36:07,845 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 22:36:08,126 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2024-10-12 22:36:08,126 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 22:36:08,146 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 22:36:08,147 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 22:36:08,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:36:08 BoogieIcfgContainer [2024-10-12 22:36:08,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 22:36:08,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 22:36:08,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 22:36:08,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 22:36:08,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:36:07" (1/3) ... [2024-10-12 22:36:08,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd5ce22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:36:08, skipping insertion in model container [2024-10-12 22:36:08,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:36:07" (2/3) ... [2024-10-12 22:36:08,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd5ce22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:36:08, skipping insertion in model container [2024-10-12 22:36:08,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:36:08" (3/3) ... [2024-10-12 22:36:08,156 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cav14_example_v.c [2024-10-12 22:36:08,168 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 22:36:08,168 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 22:36:08,210 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 22:36:08,215 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;@24c13d04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 22:36:08,215 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 22:36:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 45 states have (on average 1.511111111111111) internal successors, (68), 46 states have internal predecessors, (68), 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) [2024-10-12 22:36:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-12 22:36:08,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:08,226 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:36:08,226 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:08,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:08,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1952044744, now seen corresponding path program 1 times [2024-10-12 22:36:08,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:08,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443169596] [2024-10-12 22:36:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:08,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:08,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:08,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443169596] [2024-10-12 22:36:08,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443169596] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:36:08,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:36:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 22:36:08,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131968586] [2024-10-12 22:36:08,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:36:08,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:36:08,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:08,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:36:08,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:36:08,635 INFO L87 Difference]: Start difference. First operand has 47 states, 45 states have (on average 1.511111111111111) internal successors, (68), 46 states have internal predecessors, (68), 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 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-10-12 22:36:08,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:08,662 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2024-10-12 22:36:08,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:36:08,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-10-12 22:36:08,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:08,670 INFO L225 Difference]: With dead ends: 86 [2024-10-12 22:36:08,670 INFO L226 Difference]: Without dead ends: 48 [2024-10-12 22:36:08,672 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 [2024-10-12 22:36:08,674 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:08,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:36:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-12 22:36:08,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-12 22:36:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.446808510638298) internal successors, (68), 47 states have internal predecessors, (68), 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) [2024-10-12 22:36:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2024-10-12 22:36:08,700 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 12 [2024-10-12 22:36:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:08,700 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2024-10-12 22:36:08,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-10-12 22:36:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2024-10-12 22:36:08,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-12 22:36:08,701 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:08,701 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:36:08,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 22:36:08,701 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:08,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash 385540125, now seen corresponding path program 1 times [2024-10-12 22:36:08,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:08,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009864319] [2024-10-12 22:36:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:08,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:08,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:08,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009864319] [2024-10-12 22:36:08,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009864319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:36:08,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:36:08,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 22:36:08,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757789664] [2024-10-12 22:36:08,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:36:08,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 22:36:08,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 22:36:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 22:36:08,819 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:36:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:08,859 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2024-10-12 22:36:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 22:36:08,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-12 22:36:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:08,860 INFO L225 Difference]: With dead ends: 89 [2024-10-12 22:36:08,860 INFO L226 Difference]: Without dead ends: 50 [2024-10-12 22:36:08,861 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 [2024-10-12 22:36:08,861 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 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 [2024-10-12 22:36:08,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:36:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-10-12 22:36:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-10-12 22:36:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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) [2024-10-12 22:36:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2024-10-12 22:36:08,866 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 13 [2024-10-12 22:36:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:08,867 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-10-12 22:36:08,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:36:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2024-10-12 22:36:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 22:36:08,868 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:08,868 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:36:08,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 22:36:08,868 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:08,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2031123903, now seen corresponding path program 1 times [2024-10-12 22:36:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:08,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57730370] [2024-10-12 22:36:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:08,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:09,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:09,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57730370] [2024-10-12 22:36:09,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57730370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:36:09,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:36:09,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 22:36:09,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068899339] [2024-10-12 22:36:09,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:36:09,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 22:36:09,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:09,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 22:36:09,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:36:09,059 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:36:09,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:09,116 INFO L93 Difference]: Finished difference Result 118 states and 165 transitions. [2024-10-12 22:36:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 22:36:09,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-12 22:36:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:09,118 INFO L225 Difference]: With dead ends: 118 [2024-10-12 22:36:09,118 INFO L226 Difference]: Without dead ends: 77 [2024-10-12 22:36:09,119 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 [2024-10-12 22:36:09,119 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 44 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:09,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 216 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:36:09,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-10-12 22:36:09,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 52. [2024-10-12 22:36:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 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) [2024-10-12 22:36:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2024-10-12 22:36:09,126 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 14 [2024-10-12 22:36:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:09,127 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2024-10-12 22:36:09,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:36:09,127 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2024-10-12 22:36:09,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-12 22:36:09,128 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:09,128 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] [2024-10-12 22:36:09,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 22:36:09,128 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:09,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:09,129 INFO L85 PathProgramCache]: Analyzing trace with hash -849728661, now seen corresponding path program 1 times [2024-10-12 22:36:09,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:09,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460663774] [2024-10-12 22:36:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:09,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:09,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:09,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460663774] [2024-10-12 22:36:09,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460663774] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:36:09,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:36:09,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 22:36:09,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785049475] [2024-10-12 22:36:09,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:36:09,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 22:36:09,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:09,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 22:36:09,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 22:36:09,607 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2024-10-12 22:36:09,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:09,703 INFO L93 Difference]: Finished difference Result 143 states and 200 transitions. [2024-10-12 22:36:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 22:36:09,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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 33 [2024-10-12 22:36:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:09,705 INFO L225 Difference]: With dead ends: 143 [2024-10-12 22:36:09,705 INFO L226 Difference]: Without dead ends: 102 [2024-10-12 22:36:09,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-12 22:36:09,706 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 60 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:09,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 513 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:36:09,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-12 22:36:09,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 63. [2024-10-12 22:36:09,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 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) [2024-10-12 22:36:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2024-10-12 22:36:09,714 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 33 [2024-10-12 22:36:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:09,714 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2024-10-12 22:36:09,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2024-10-12 22:36:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2024-10-12 22:36:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-12 22:36:09,715 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:09,715 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] [2024-10-12 22:36:09,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 22:36:09,716 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:09,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:09,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1621245414, now seen corresponding path program 1 times [2024-10-12 22:36:09,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:09,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061030900] [2024-10-12 22:36:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:09,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:10,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:10,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061030900] [2024-10-12 22:36:10,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061030900] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:36:10,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30341790] [2024-10-12 22:36:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:10,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:36:10,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:36:10,056 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) [2024-10-12 22:36:10,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 22:36:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:10,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-12 22:36:10,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:36:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:10,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 22:36:10,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30341790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:36:10,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 22:36:10,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-10-12 22:36:10,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631464017] [2024-10-12 22:36:10,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:36:10,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 22:36:10,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:10,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 22:36:10,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-12 22:36:10,481 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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) [2024-10-12 22:36:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:10,617 INFO L93 Difference]: Finished difference Result 159 states and 223 transitions. [2024-10-12 22:36:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 22:36:10,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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 34 [2024-10-12 22:36:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:10,619 INFO L225 Difference]: With dead ends: 159 [2024-10-12 22:36:10,619 INFO L226 Difference]: Without dead ends: 105 [2024-10-12 22:36:10,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-10-12 22:36:10,620 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 117 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:10,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 195 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:36:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-10-12 22:36:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2024-10-12 22:36:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 92 states have internal predecessors, (126), 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) [2024-10-12 22:36:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 126 transitions. [2024-10-12 22:36:10,629 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 126 transitions. Word has length 34 [2024-10-12 22:36:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:10,630 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 126 transitions. [2024-10-12 22:36:10,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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) [2024-10-12 22:36:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 126 transitions. [2024-10-12 22:36:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-12 22:36:10,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:10,631 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] [2024-10-12 22:36:10,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 22:36:10,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:36:10,836 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:10,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:10,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1993897390, now seen corresponding path program 1 times [2024-10-12 22:36:10,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:10,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768932307] [2024-10-12 22:36:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:10,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:11,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768932307] [2024-10-12 22:36:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768932307] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:36:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785497894] [2024-10-12 22:36:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:11,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:36:11,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:36:11,214 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) [2024-10-12 22:36:11,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 22:36:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:11,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-12 22:36:11,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:36:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:11,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 22:36:11,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785497894] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:36:11,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 22:36:11,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2024-10-12 22:36:11,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497236393] [2024-10-12 22:36:11,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:36:11,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 22:36:11,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 22:36:11,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-10-12 22:36:11,478 INFO L87 Difference]: Start difference. First operand 93 states and 126 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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) [2024-10-12 22:36:11,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:11,602 INFO L93 Difference]: Finished difference Result 182 states and 248 transitions. [2024-10-12 22:36:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 22:36:11,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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 35 [2024-10-12 22:36:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:11,603 INFO L225 Difference]: With dead ends: 182 [2024-10-12 22:36:11,603 INFO L226 Difference]: Without dead ends: 108 [2024-10-12 22:36:11,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-10-12 22:36:11,607 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 128 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:11,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 194 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:36:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-12 22:36:11,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2024-10-12 22:36:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.3473684210526315) internal successors, (128), 95 states have internal predecessors, (128), 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) [2024-10-12 22:36:11,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 128 transitions. [2024-10-12 22:36:11,616 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 128 transitions. Word has length 35 [2024-10-12 22:36:11,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:11,617 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 128 transitions. [2024-10-12 22:36:11,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 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) [2024-10-12 22:36:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 128 transitions. [2024-10-12 22:36:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 22:36:11,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:11,618 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] [2024-10-12 22:36:11,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 22:36:11,818 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,SelfDestructingSolverStorable5 [2024-10-12 22:36:11,819 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:11,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:11,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1235051301, now seen corresponding path program 1 times [2024-10-12 22:36:11,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:11,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62856497] [2024-10-12 22:36:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:11,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:12,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:12,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62856497] [2024-10-12 22:36:12,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62856497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:36:12,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:36:12,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 22:36:12,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034770135] [2024-10-12 22:36:12,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:36:12,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 22:36:12,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:12,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 22:36:12,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 22:36:12,279 INFO L87 Difference]: Start difference. First operand 96 states and 128 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-10-12 22:36:12,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:12,369 INFO L93 Difference]: Finished difference Result 166 states and 226 transitions. [2024-10-12 22:36:12,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 22:36:12,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2024-10-12 22:36:12,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:12,370 INFO L225 Difference]: With dead ends: 166 [2024-10-12 22:36:12,370 INFO L226 Difference]: Without dead ends: 112 [2024-10-12 22:36:12,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 22:36:12,371 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 31 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:12,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 169 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:36:12,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-12 22:36:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2024-10-12 22:36:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3545454545454545) internal successors, (149), 110 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:36:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 149 transitions. [2024-10-12 22:36:12,376 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 149 transitions. Word has length 36 [2024-10-12 22:36:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:12,376 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 149 transitions. [2024-10-12 22:36:12,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-10-12 22:36:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 149 transitions. [2024-10-12 22:36:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-12 22:36:12,377 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:12,377 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] [2024-10-12 22:36:12,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 22:36:12,377 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:12,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:12,378 INFO L85 PathProgramCache]: Analyzing trace with hash 772222476, now seen corresponding path program 1 times [2024-10-12 22:36:12,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:12,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473535298] [2024-10-12 22:36:12,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:12,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:12,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473535298] [2024-10-12 22:36:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473535298] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:36:12,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:36:12,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 22:36:12,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407209730] [2024-10-12 22:36:12,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:36:12,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 22:36:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 22:36:12,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-12 22:36:12,780 INFO L87 Difference]: Start difference. First operand 111 states and 149 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2024-10-12 22:36:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:12,923 INFO L93 Difference]: Finished difference Result 184 states and 249 transitions. [2024-10-12 22:36:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 22:36:12,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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 36 [2024-10-12 22:36:12,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:12,924 INFO L225 Difference]: With dead ends: 184 [2024-10-12 22:36:12,925 INFO L226 Difference]: Without dead ends: 114 [2024-10-12 22:36:12,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-10-12 22:36:12,927 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 44 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:12,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 210 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 22:36:12,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-10-12 22:36:12,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2024-10-12 22:36:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.3482142857142858) internal successors, (151), 112 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:36:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 151 transitions. [2024-10-12 22:36:12,935 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 151 transitions. Word has length 36 [2024-10-12 22:36:12,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:12,935 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 151 transitions. [2024-10-12 22:36:12,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2024-10-12 22:36:12,935 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 151 transitions. [2024-10-12 22:36:12,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 22:36:12,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:12,936 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] [2024-10-12 22:36:12,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 22:36:12,936 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:12,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1781504483, now seen corresponding path program 1 times [2024-10-12 22:36:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718427382] [2024-10-12 22:36:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:13,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:13,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718427382] [2024-10-12 22:36:13,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718427382] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:36:13,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:36:13,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 22:36:13,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091030490] [2024-10-12 22:36:13,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:36:13,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 22:36:13,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 22:36:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 22:36:13,213 INFO L87 Difference]: Start difference. First operand 113 states and 151 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2024-10-12 22:36:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:13,279 INFO L93 Difference]: Finished difference Result 207 states and 282 transitions. [2024-10-12 22:36:13,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 22:36:13,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-12 22:36:13,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:13,280 INFO L225 Difference]: With dead ends: 207 [2024-10-12 22:36:13,280 INFO L226 Difference]: Without dead ends: 153 [2024-10-12 22:36:13,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-10-12 22:36:13,281 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 58 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:13,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 438 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:36:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-10-12 22:36:13,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 116. [2024-10-12 22:36:13,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.3478260869565217) internal successors, (155), 115 states have internal predecessors, (155), 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) [2024-10-12 22:36:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2024-10-12 22:36:13,285 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 37 [2024-10-12 22:36:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:13,286 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2024-10-12 22:36:13,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2024-10-12 22:36:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2024-10-12 22:36:13,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-12 22:36:13,290 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:13,294 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] [2024-10-12 22:36:13,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 22:36:13,294 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:13,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash 152508028, now seen corresponding path program 1 times [2024-10-12 22:36:13,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:13,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814967495] [2024-10-12 22:36:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:13,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:13,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:13,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814967495] [2024-10-12 22:36:13,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814967495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 22:36:13,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 22:36:13,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 22:36:13,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257347324] [2024-10-12 22:36:13,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 22:36:13,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 22:36:13,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:13,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 22:36:13,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 22:36:13,511 INFO L87 Difference]: Start difference. First operand 116 states and 155 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-10-12 22:36:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:13,547 INFO L93 Difference]: Finished difference Result 188 states and 253 transitions. [2024-10-12 22:36:13,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 22:36:13,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-10-12 22:36:13,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:13,548 INFO L225 Difference]: With dead ends: 188 [2024-10-12 22:36:13,548 INFO L226 Difference]: Without dead ends: 92 [2024-10-12 22:36:13,549 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 [2024-10-12 22:36:13,549 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 26 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:13,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 217 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:36:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-12 22:36:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-10-12 22:36:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.3406593406593406) internal successors, (122), 91 states have internal predecessors, (122), 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) [2024-10-12 22:36:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 122 transitions. [2024-10-12 22:36:13,556 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 122 transitions. Word has length 37 [2024-10-12 22:36:13,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:13,556 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 122 transitions. [2024-10-12 22:36:13,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-10-12 22:36:13,557 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 122 transitions. [2024-10-12 22:36:13,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 22:36:13,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:13,559 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-12 22:36:13,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 22:36:13,559 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:13,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash -201556252, now seen corresponding path program 1 times [2024-10-12 22:36:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:13,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583060601] [2024-10-12 22:36:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:13,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:13,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:13,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583060601] [2024-10-12 22:36:13,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583060601] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:36:13,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60783763] [2024-10-12 22:36:13,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:13,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:36:13,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:36:13,963 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) [2024-10-12 22:36:13,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 22:36:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:14,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-10-12 22:36:14,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:36:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:14,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:36:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:14,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60783763] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:36:14,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:36:14,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 27 [2024-10-12 22:36:14,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293558096] [2024-10-12 22:36:14,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:36:14,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 22:36:14,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:14,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 22:36:14,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2024-10-12 22:36:14,800 INFO L87 Difference]: Start difference. First operand 92 states and 122 transitions. Second operand has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 27 states have internal predecessors, (145), 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) [2024-10-12 22:36:15,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:15,457 INFO L93 Difference]: Finished difference Result 201 states and 273 transitions. [2024-10-12 22:36:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-12 22:36:15,457 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 27 states have internal predecessors, (145), 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 55 [2024-10-12 22:36:15,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:15,458 INFO L225 Difference]: With dead ends: 201 [2024-10-12 22:36:15,458 INFO L226 Difference]: Without dead ends: 145 [2024-10-12 22:36:15,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=356, Invalid=1806, Unknown=0, NotChecked=0, Total=2162 [2024-10-12 22:36:15,459 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 335 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:15,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 258 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 22:36:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-10-12 22:36:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 116. [2024-10-12 22:36:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.3217391304347825) internal successors, (152), 115 states have internal predecessors, (152), 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) [2024-10-12 22:36:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 152 transitions. [2024-10-12 22:36:15,463 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 152 transitions. Word has length 55 [2024-10-12 22:36:15,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:15,463 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 152 transitions. [2024-10-12 22:36:15,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 27 states have internal predecessors, (145), 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) [2024-10-12 22:36:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 152 transitions. [2024-10-12 22:36:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-12 22:36:15,464 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:15,464 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-10-12 22:36:15,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 22:36:15,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:36:15,665 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:15,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:15,665 INFO L85 PathProgramCache]: Analyzing trace with hash -842752749, now seen corresponding path program 1 times [2024-10-12 22:36:15,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:15,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555626841] [2024-10-12 22:36:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:15,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:16,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:16,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555626841] [2024-10-12 22:36:16,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555626841] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:36:16,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000496029] [2024-10-12 22:36:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:16,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:36:16,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:36:16,107 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) [2024-10-12 22:36:16,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 22:36:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:16,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-10-12 22:36:16,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:36:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:16,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:36:17,889 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:17,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000496029] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:36:17,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:36:17,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 19] total 36 [2024-10-12 22:36:17,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380916036] [2024-10-12 22:36:17,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:36:17,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-12 22:36:17,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:17,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-12 22:36:17,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2024-10-12 22:36:17,891 INFO L87 Difference]: Start difference. First operand 116 states and 152 transitions. Second operand has 37 states, 37 states have (on average 4.135135135135135) internal successors, (153), 36 states have internal predecessors, (153), 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) [2024-10-12 22:36:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:19,422 INFO L93 Difference]: Finished difference Result 271 states and 362 transitions. [2024-10-12 22:36:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-12 22:36:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.135135135135135) internal successors, (153), 36 states have internal predecessors, (153), 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 56 [2024-10-12 22:36:19,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:19,424 INFO L225 Difference]: With dead ends: 271 [2024-10-12 22:36:19,424 INFO L226 Difference]: Without dead ends: 157 [2024-10-12 22:36:19,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1304 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=741, Invalid=5111, Unknown=0, NotChecked=0, Total=5852 [2024-10-12 22:36:19,427 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 483 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:19,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 689 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 22:36:19,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-10-12 22:36:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 137. [2024-10-12 22:36:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3161764705882353) internal successors, (179), 136 states have internal predecessors, (179), 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) [2024-10-12 22:36:19,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 179 transitions. [2024-10-12 22:36:19,431 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 179 transitions. Word has length 56 [2024-10-12 22:36:19,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:19,431 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 179 transitions. [2024-10-12 22:36:19,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.135135135135135) internal successors, (153), 36 states have internal predecessors, (153), 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) [2024-10-12 22:36:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 179 transitions. [2024-10-12 22:36:19,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 22:36:19,432 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 22:36:19,432 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-10-12 22:36:19,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 22:36:19,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:36:19,633 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 22:36:19,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 22:36:19,634 INFO L85 PathProgramCache]: Analyzing trace with hash -497349561, now seen corresponding path program 1 times [2024-10-12 22:36:19,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 22:36:19,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789004574] [2024-10-12 22:36:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:19,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 22:36:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:20,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 22:36:20,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789004574] [2024-10-12 22:36:20,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789004574] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 22:36:20,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498537150] [2024-10-12 22:36:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 22:36:20,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 22:36:20,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 22:36:20,581 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) [2024-10-12 22:36:20,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 22:36:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 22:36:20,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-10-12 22:36:20,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 22:36:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:21,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 22:36:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 22:36:23,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498537150] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 22:36:23,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 22:36:23,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 24] total 49 [2024-10-12 22:36:23,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742225931] [2024-10-12 22:36:23,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 22:36:23,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-12 22:36:23,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 22:36:23,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-12 22:36:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2242, Unknown=0, NotChecked=0, Total=2450 [2024-10-12 22:36:23,705 INFO L87 Difference]: Start difference. First operand 137 states and 179 transitions. Second operand has 50 states, 50 states have (on average 2.98) internal successors, (149), 49 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:36:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 22:36:23,719 INFO L93 Difference]: Finished difference Result 137 states and 179 transitions. [2024-10-12 22:36:23,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 22:36:23,720 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.98) internal successors, (149), 49 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-10-12 22:36:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 22:36:23,720 INFO L225 Difference]: With dead ends: 137 [2024-10-12 22:36:23,720 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 22:36:23,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=208, Invalid=2242, Unknown=0, NotChecked=0, Total=2450 [2024-10-12 22:36:23,721 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 22:36:23,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 22:36:23,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 22:36:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 22:36:23,722 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) [2024-10-12 22:36:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 22:36:23,722 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2024-10-12 22:36:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 22:36:23,722 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 22:36:23,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.98) internal successors, (149), 49 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 22:36:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 22:36:23,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 22:36:23,724 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 22:36:23,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 22:36:23,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 22:36:23,928 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 22:36:23,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 22:36:23,935 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 22:36:23,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:36:23 BoogieIcfgContainer [2024-10-12 22:36:23,943 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 22:36:23,943 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 22:36:23,944 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 22:36:23,944 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 22:36:23,944 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:36:08" (3/4) ... [2024-10-12 22:36:23,946 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 22:36:23,954 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-12 22:36:23,954 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-12 22:36:23,954 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 22:36:23,955 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 22:36:24,038 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 22:36:24,039 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 22:36:24,039 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 22:36:24,039 INFO L158 Benchmark]: Toolchain (without parser) took 16770.17ms. Allocated memory was 163.6MB in the beginning and 436.2MB in the end (delta: 272.6MB). Free memory was 106.3MB in the beginning and 319.0MB in the end (delta: -212.6MB). Peak memory consumption was 62.0MB. Max. memory is 16.1GB. [2024-10-12 22:36:24,039 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 125.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 22:36:24,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.48ms. Allocated memory is still 163.6MB. Free memory was 106.3MB in the beginning and 91.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-12 22:36:24,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.90ms. Allocated memory is still 163.6MB. Free memory was 91.6MB in the beginning and 86.6MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 22:36:24,040 INFO L158 Benchmark]: Boogie Preprocessor took 62.86ms. Allocated memory is still 163.6MB. Free memory was 86.6MB in the beginning and 83.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 22:36:24,041 INFO L158 Benchmark]: RCFGBuilder took 465.41ms. Allocated memory is still 163.6MB. Free memory was 83.1MB in the beginning and 52.5MB in the end (delta: 30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-10-12 22:36:24,041 INFO L158 Benchmark]: TraceAbstraction took 15792.30ms. Allocated memory was 163.6MB in the beginning and 436.2MB in the end (delta: 272.6MB). Free memory was 51.8MB in the beginning and 324.2MB in the end (delta: -272.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2024-10-12 22:36:24,041 INFO L158 Benchmark]: Witness Printer took 95.43ms. Allocated memory is still 436.2MB. Free memory was 324.2MB in the beginning and 319.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 22:36:24,043 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 163.6MB. Free memory is still 125.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.48ms. Allocated memory is still 163.6MB. Free memory was 106.3MB in the beginning and 91.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.90ms. Allocated memory is still 163.6MB. Free memory was 91.6MB in the beginning and 86.6MB in the end (delta: 5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.86ms. Allocated memory is still 163.6MB. Free memory was 86.6MB in the beginning and 83.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 465.41ms. Allocated memory is still 163.6MB. Free memory was 83.1MB in the beginning and 52.5MB in the end (delta: 30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 15792.30ms. Allocated memory was 163.6MB in the beginning and 436.2MB in the end (delta: 272.6MB). Free memory was 51.8MB in the beginning and 324.2MB in the end (delta: -272.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Witness Printer took 95.43ms. Allocated memory is still 436.2MB. Free memory was 324.2MB in the beginning and 319.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.7s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1326 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1326 mSDsluCounter, 3464 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2820 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2840 IncrementalHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 644 mSDtfsCounter, 2840 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 569 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=12, InterpolantAutomatonStates: 130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 176 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 692 NumberOfCodeBlocks, 692 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 839 ConstructedInterpolants, 0 QuantifiedInterpolants, 8586 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1759 ConjunctsInSsa, 354 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 226/336 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2024-10-12 22:36:24,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE