./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f85bc794ddaf472a7e3079e39d319628ff71704bc56bc279abbe4af1f903e58e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:47:52,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:47:53,041 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:47:53,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:47:53,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:47:53,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:47:53,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:47:53,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:47:53,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:47:53,082 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:47:53,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:47:53,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:47:53,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:47:53,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:47:53,084 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:47:53,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:47:53,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:47:53,086 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:47:53,086 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:47:53,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:47:53,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:47:53,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:47:53,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:47:53,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:47:53,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:47:53,088 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:47:53,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:47:53,088 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:47:53,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:47:53,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:47:53,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:47:53,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:47:53,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:47:53,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:47:53,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:47:53,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:47:53,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:47:53,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:47:53,093 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:47:53,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:47:53,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:47:53,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:47:53,094 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f85bc794ddaf472a7e3079e39d319628ff71704bc56bc279abbe4af1f903e58e [2024-11-18 23:47:53,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:47:53,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:47:53,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:47:53,389 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:47:53,389 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:47:53,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i [2024-11-18 23:47:54,830 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:47:55,072 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:47:55,073 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i [2024-11-18 23:47:55,090 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deca69f6e/25aee4e6fb00493b99a415618352c295/FLAG2f5f3582e [2024-11-18 23:47:55,409 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deca69f6e/25aee4e6fb00493b99a415618352c295 [2024-11-18 23:47:55,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:47:55,413 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:47:55,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:47:55,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:47:55,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:47:55,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:55,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c6a2c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55, skipping insertion in model container [2024-11-18 23:47:55,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:55,461 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:47:55,616 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i[916,929] [2024-11-18 23:47:55,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:47:55,777 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:47:55,792 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-82.i[916,929] [2024-11-18 23:47:55,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:47:55,884 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:47:55,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55 WrapperNode [2024-11-18 23:47:55,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:47:55,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:47:55,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:47:55,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:47:55,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:55,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:55,993 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 501 [2024-11-18 23:47:55,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:47:55,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:47:55,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:47:55,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:47:56,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:56,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:56,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:56,148 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]. [2024-11-18 23:47:56,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:56,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:56,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:56,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:56,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:56,221 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:56,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:47:56,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:47:56,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:47:56,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:47:56,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (1/1) ... [2024-11-18 23:47:56,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:47:56,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:56,267 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) [2024-11-18 23:47:56,269 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 [2024-11-18 23:47:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:47:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:47:56,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:47:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:47:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:47:56,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:47:56,443 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:47:56,445 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:47:57,335 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-18 23:47:57,336 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:47:57,355 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:47:57,356 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:47:57,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:47:57 BoogieIcfgContainer [2024-11-18 23:47:57,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:47:57,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:47:57,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:47:57,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:47:57,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:47:55" (1/3) ... [2024-11-18 23:47:57,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be2dc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:47:57, skipping insertion in model container [2024-11-18 23:47:57,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:47:55" (2/3) ... [2024-11-18 23:47:57,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be2dc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:47:57, skipping insertion in model container [2024-11-18 23:47:57,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:47:57" (3/3) ... [2024-11-18 23:47:57,366 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-82.i [2024-11-18 23:47:57,381 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:47:57,382 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:47:57,453 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:47:57,460 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;@970a2d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:47:57,461 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:47:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 152 states have (on average 1.5263157894736843) internal successors, (232), 153 states have internal predecessors, (232), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 23:47:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-18 23:47:57,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:57,496 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:57,497 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:57,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1242000974, now seen corresponding path program 1 times [2024-11-18 23:47:57,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:57,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659949685] [2024-11-18 23:47:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:57,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-18 23:47:58,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:58,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659949685] [2024-11-18 23:47:58,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659949685] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:47:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168498098] [2024-11-18 23:47:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:58,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:47:58,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:47:58,058 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) [2024-11-18 23:47:58,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:47:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:58,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:47:58,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:47:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-18 23:47:58,442 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:47:58,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168498098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:58,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:47:58,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:47:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048997987] [2024-11-18 23:47:58,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:58,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:47:58,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:58,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:47:58,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:47:58,486 INFO L87 Difference]: Start difference. First operand has 205 states, 152 states have (on average 1.5263157894736843) internal successors, (232), 153 states have internal predecessors, (232), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:47:58,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:58,551 INFO L93 Difference]: Finished difference Result 403 states and 708 transitions. [2024-11-18 23:47:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:47:58,554 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 334 [2024-11-18 23:47:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:58,566 INFO L225 Difference]: With dead ends: 403 [2024-11-18 23:47:58,567 INFO L226 Difference]: Without dead ends: 201 [2024-11-18 23:47:58,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:47:58,580 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:58,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:47:58,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-18 23:47:58,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-11-18 23:47:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 149 states have (on average 1.5033557046979866) internal successors, (224), 149 states have internal predecessors, (224), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 23:47:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 324 transitions. [2024-11-18 23:47:58,654 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 324 transitions. Word has length 334 [2024-11-18 23:47:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:58,657 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 324 transitions. [2024-11-18 23:47:58,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:47:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 324 transitions. [2024-11-18 23:47:58,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-18 23:47:58,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:58,670 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:58,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:47:58,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:47:58,871 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:58,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:58,872 INFO L85 PathProgramCache]: Analyzing trace with hash 183916854, now seen corresponding path program 1 times [2024-11-18 23:47:58,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:58,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410738374] [2024-11-18 23:47:58,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:58,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:47:59,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:59,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410738374] [2024-11-18 23:47:59,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410738374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:59,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:59,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:47:59,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476241163] [2024-11-18 23:47:59,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:59,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:47:59,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:59,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:47:59,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:47:59,869 INFO L87 Difference]: Start difference. First operand 201 states and 324 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:48:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:00,761 INFO L93 Difference]: Finished difference Result 1050 states and 1696 transitions. [2024-11-18 23:48:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 23:48:00,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 334 [2024-11-18 23:48:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:00,770 INFO L225 Difference]: With dead ends: 1050 [2024-11-18 23:48:00,770 INFO L226 Difference]: Without dead ends: 852 [2024-11-18 23:48:00,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-18 23:48:00,772 INFO L432 NwaCegarLoop]: 660 mSDtfsCounter, 1814 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:00,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 3704 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:48:00,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-11-18 23:48:00,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 729. [2024-11-18 23:48:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 549 states have (on average 1.5100182149362478) internal successors, (829), 551 states have internal predecessors, (829), 174 states have call successors, (174), 5 states have call predecessors, (174), 5 states have return successors, (174), 172 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-18 23:48:00,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1177 transitions. [2024-11-18 23:48:00,879 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1177 transitions. Word has length 334 [2024-11-18 23:48:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:00,881 INFO L471 AbstractCegarLoop]: Abstraction has 729 states and 1177 transitions. [2024-11-18 23:48:00,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:48:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1177 transitions. [2024-11-18 23:48:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2024-11-18 23:48:00,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:00,888 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:00,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:48:00,889 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:00,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:00,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1865470988, now seen corresponding path program 1 times [2024-11-18 23:48:00,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:00,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158312304] [2024-11-18 23:48:00,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:00,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:48:01,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:01,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158312304] [2024-11-18 23:48:01,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158312304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:01,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:48:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403380000] [2024-11-18 23:48:01,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:01,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:48:01,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:01,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:48:01,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:48:01,351 INFO L87 Difference]: Start difference. First operand 729 states and 1177 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:48:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:01,663 INFO L93 Difference]: Finished difference Result 2447 states and 3961 transitions. [2024-11-18 23:48:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:48:01,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 334 [2024-11-18 23:48:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:01,676 INFO L225 Difference]: With dead ends: 2447 [2024-11-18 23:48:01,676 INFO L226 Difference]: Without dead ends: 1721 [2024-11-18 23:48:01,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:48:01,680 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 401 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:01,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1013 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:48:01,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-11-18 23:48:01,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1585. [2024-11-18 23:48:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1226 states have (on average 1.531810766721044) internal successors, (1878), 1230 states have internal predecessors, (1878), 348 states have call successors, (348), 10 states have call predecessors, (348), 10 states have return successors, (348), 344 states have call predecessors, (348), 348 states have call successors, (348) [2024-11-18 23:48:01,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2574 transitions. [2024-11-18 23:48:01,819 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2574 transitions. Word has length 334 [2024-11-18 23:48:01,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:01,820 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2574 transitions. [2024-11-18 23:48:01,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:48:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2574 transitions. [2024-11-18 23:48:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-18 23:48:01,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:01,826 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:01,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:48:01,827 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:01,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:01,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2078469936, now seen corresponding path program 1 times [2024-11-18 23:48:01,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:01,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814443341] [2024-11-18 23:48:01,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:01,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:48:02,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:02,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814443341] [2024-11-18 23:48:02,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814443341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:02,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:02,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:48:02,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995261008] [2024-11-18 23:48:02,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:02,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:48:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:48:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:48:02,430 INFO L87 Difference]: Start difference. First operand 1585 states and 2574 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:48:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:04,173 INFO L93 Difference]: Finished difference Result 5360 states and 8706 transitions. [2024-11-18 23:48:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 23:48:04,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 335 [2024-11-18 23:48:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:04,193 INFO L225 Difference]: With dead ends: 5360 [2024-11-18 23:48:04,193 INFO L226 Difference]: Without dead ends: 3778 [2024-11-18 23:48:04,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2024-11-18 23:48:04,199 INFO L432 NwaCegarLoop]: 641 mSDtfsCounter, 3078 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3078 SdHoareTripleChecker+Valid, 3139 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:04,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3078 Valid, 3139 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:48:04,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2024-11-18 23:48:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 2177. [2024-11-18 23:48:04,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2177 states, 1714 states have (on average 1.543757292882147) internal successors, (2646), 1720 states have internal predecessors, (2646), 448 states have call successors, (448), 14 states have call predecessors, (448), 14 states have return successors, (448), 442 states have call predecessors, (448), 448 states have call successors, (448) [2024-11-18 23:48:04,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2177 states to 2177 states and 3542 transitions. [2024-11-18 23:48:04,401 INFO L78 Accepts]: Start accepts. Automaton has 2177 states and 3542 transitions. Word has length 335 [2024-11-18 23:48:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:04,402 INFO L471 AbstractCegarLoop]: Abstraction has 2177 states and 3542 transitions. [2024-11-18 23:48:04,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-18 23:48:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2177 states and 3542 transitions. [2024-11-18 23:48:04,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-18 23:48:04,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:04,412 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:04,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:48:04,414 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:04,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:04,415 INFO L85 PathProgramCache]: Analyzing trace with hash 371130194, now seen corresponding path program 1 times [2024-11-18 23:48:04,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:04,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952764856] [2024-11-18 23:48:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:04,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:48:04,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:04,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952764856] [2024-11-18 23:48:04,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952764856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:04,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:04,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:48:04,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892075429] [2024-11-18 23:48:04,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:04,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:48:04,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:04,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:48:04,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:48:04,935 INFO L87 Difference]: Start difference. First operand 2177 states and 3542 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:06,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:06,026 INFO L93 Difference]: Finished difference Result 6679 states and 10825 transitions. [2024-11-18 23:48:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:48:06,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 335 [2024-11-18 23:48:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:06,052 INFO L225 Difference]: With dead ends: 6679 [2024-11-18 23:48:06,052 INFO L226 Difference]: Without dead ends: 4505 [2024-11-18 23:48:06,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:48:06,060 INFO L432 NwaCegarLoop]: 555 mSDtfsCounter, 853 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:06,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1348 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 23:48:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2024-11-18 23:48:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 2897. [2024-11-18 23:48:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2384 states have (on average 1.579278523489933) internal successors, (3765), 2392 states have internal predecessors, (3765), 496 states have call successors, (496), 16 states have call predecessors, (496), 16 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2024-11-18 23:48:06,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 4757 transitions. [2024-11-18 23:48:06,283 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 4757 transitions. Word has length 335 [2024-11-18 23:48:06,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:06,284 INFO L471 AbstractCegarLoop]: Abstraction has 2897 states and 4757 transitions. [2024-11-18 23:48:06,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 4757 transitions. [2024-11-18 23:48:06,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-18 23:48:06,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:06,291 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:06,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:48:06,291 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:06,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash 864404244, now seen corresponding path program 1 times [2024-11-18 23:48:06,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:06,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504582590] [2024-11-18 23:48:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:06,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-18 23:48:07,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504582590] [2024-11-18 23:48:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504582590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:48:07,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:48:07,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:48:07,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186835877] [2024-11-18 23:48:07,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:48:07,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:48:07,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:07,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:48:07,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:48:07,065 INFO L87 Difference]: Start difference. First operand 2897 states and 4757 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:09,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:09,099 INFO L93 Difference]: Finished difference Result 7656 states and 12450 transitions. [2024-11-18 23:48:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 23:48:09,100 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 335 [2024-11-18 23:48:09,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:09,135 INFO L225 Difference]: With dead ends: 7656 [2024-11-18 23:48:09,135 INFO L226 Difference]: Without dead ends: 6515 [2024-11-18 23:48:09,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-11-18 23:48:09,145 INFO L432 NwaCegarLoop]: 593 mSDtfsCounter, 1331 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:09,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 2436 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 23:48:09,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2024-11-18 23:48:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 3455. [2024-11-18 23:48:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 2942 states have (on average 1.6050305914343983) internal successors, (4722), 2950 states have internal predecessors, (4722), 496 states have call successors, (496), 16 states have call predecessors, (496), 16 states have return successors, (496), 488 states have call predecessors, (496), 496 states have call successors, (496) [2024-11-18 23:48:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 5714 transitions. [2024-11-18 23:48:09,490 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 5714 transitions. Word has length 335 [2024-11-18 23:48:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:09,491 INFO L471 AbstractCegarLoop]: Abstraction has 3455 states and 5714 transitions. [2024-11-18 23:48:09,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-18 23:48:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 5714 transitions. [2024-11-18 23:48:09,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-18 23:48:09,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:09,498 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:09,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:48:09,499 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:09,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:09,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1184983598, now seen corresponding path program 1 times [2024-11-18 23:48:09,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:09,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215210464] [2024-11-18 23:48:09,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:09,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 108 proven. 39 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2024-11-18 23:48:11,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:11,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215210464] [2024-11-18 23:48:11,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215210464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:48:11,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190347977] [2024-11-18 23:48:11,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:11,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:11,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:48:11,308 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) [2024-11-18 23:48:11,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:48:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:11,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 23:48:11,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:48:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1929 proven. 90 refuted. 0 times theorem prover too weak. 2881 trivial. 0 not checked. [2024-11-18 23:48:13,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:48:16,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190347977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:48:16,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:48:16,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 28 [2024-11-18 23:48:16,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272336353] [2024-11-18 23:48:16,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:48:16,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 23:48:16,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:16,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 23:48:16,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=955, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 23:48:16,081 INFO L87 Difference]: Start difference. First operand 3455 states and 5714 transitions. Second operand has 28 states, 28 states have (on average 6.214285714285714) internal successors, (174), 27 states have internal predecessors, (174), 6 states have call successors, (100), 5 states have call predecessors, (100), 7 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) [2024-11-18 23:48:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:48:29,855 INFO L93 Difference]: Finished difference Result 28842 states and 46691 transitions. [2024-11-18 23:48:29,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-18 23:48:29,856 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.214285714285714) internal successors, (174), 27 states have internal predecessors, (174), 6 states have call successors, (100), 5 states have call predecessors, (100), 7 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) Word has length 335 [2024-11-18 23:48:29,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:48:29,967 INFO L225 Difference]: With dead ends: 28842 [2024-11-18 23:48:29,968 INFO L226 Difference]: Without dead ends: 25390 [2024-11-18 23:48:29,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9459 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=4165, Invalid=21917, Unknown=0, NotChecked=0, Total=26082 [2024-11-18 23:48:29,997 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 4854 mSDsluCounter, 6637 mSDsCounter, 0 mSdLazyCounter, 5798 mSolverCounterSat, 3200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4855 SdHoareTripleChecker+Valid, 7156 SdHoareTripleChecker+Invalid, 8998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3200 IncrementalHoareTripleChecker+Valid, 5798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:48:29,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4855 Valid, 7156 Invalid, 8998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3200 Valid, 5798 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-18 23:48:30,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25390 states. [2024-11-18 23:48:31,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25390 to 16512. [2024-11-18 23:48:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16512 states, 13981 states have (on average 1.5728488663185751) internal successors, (21990), 14038 states have internal predecessors, (21990), 2388 states have call successors, (2388), 142 states have call predecessors, (2388), 142 states have return successors, (2388), 2331 states have call predecessors, (2388), 2388 states have call successors, (2388) [2024-11-18 23:48:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16512 states to 16512 states and 26766 transitions. [2024-11-18 23:48:31,849 INFO L78 Accepts]: Start accepts. Automaton has 16512 states and 26766 transitions. Word has length 335 [2024-11-18 23:48:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:48:31,850 INFO L471 AbstractCegarLoop]: Abstraction has 16512 states and 26766 transitions. [2024-11-18 23:48:31,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.214285714285714) internal successors, (174), 27 states have internal predecessors, (174), 6 states have call successors, (100), 5 states have call predecessors, (100), 7 states have return successors, (100), 6 states have call predecessors, (100), 6 states have call successors, (100) [2024-11-18 23:48:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 16512 states and 26766 transitions. [2024-11-18 23:48:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-11-18 23:48:31,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:48:31,867 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:48:31,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:48:32,070 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,SelfDestructingSolverStorable6 [2024-11-18 23:48:32,071 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:48:32,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:48:32,072 INFO L85 PathProgramCache]: Analyzing trace with hash 260084946, now seen corresponding path program 1 times [2024-11-18 23:48:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:48:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733576092] [2024-11-18 23:48:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:32,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:48:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 309 proven. 594 refuted. 0 times theorem prover too weak. 3997 trivial. 0 not checked. [2024-11-18 23:48:36,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:48:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733576092] [2024-11-18 23:48:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733576092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:48:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630532489] [2024-11-18 23:48:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:48:36,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:48:36,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:48:36,421 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) [2024-11-18 23:48:36,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:48:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:48:36,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-18 23:48:36,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:48:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 3230 proven. 594 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2024-11-18 23:48:41,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:48:42,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630532489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:48:42,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:48:42,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29] total 47 [2024-11-18 23:48:42,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059879061] [2024-11-18 23:48:42,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:48:42,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-18 23:48:42,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:48:42,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-18 23:48:42,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2374, Unknown=0, NotChecked=0, Total=2756 [2024-11-18 23:48:42,994 INFO L87 Difference]: Start difference. First operand 16512 states and 26766 transitions. Second operand has 47 states, 45 states have (on average 4.111111111111111) internal successors, (185), 43 states have internal predecessors, (185), 16 states have call successors, (100), 9 states have call predecessors, (100), 14 states have return successors, (100), 16 states have call predecessors, (100), 16 states have call successors, (100)