./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.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_fillercode_fillercodestructure_filler-pr-cn_file-81.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 c37c06019a2f7252c23194b0baf4adc5534d367e32a3abf21b53b0028081fdaa --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 21:00:41,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 21:00:41,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 21:00:41,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 21:00:41,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 21:00:41,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 21:00:41,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 21:00:41,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 21:00:41,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 21:00:41,578 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 21:00:41,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 21:00:41,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 21:00:41,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 21:00:41,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 21:00:41,580 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 21:00:41,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 21:00:41,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 21:00:41,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 21:00:41,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 21:00:41,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 21:00:41,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 21:00:41,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 21:00:41,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 21:00:41,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 21:00:41,585 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 21:00:41,586 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 21:00:41,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 21:00:41,586 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 21:00:41,586 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 21:00:41,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 21:00:41,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 21:00:41,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 21:00:41,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:00:41,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 21:00:41,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 21:00:41,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 21:00:41,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 21:00:41,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 21:00:41,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 21:00:41,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 21:00:41,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 21:00:41,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 21:00:41,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c37c06019a2f7252c23194b0baf4adc5534d367e32a3abf21b53b0028081fdaa [2024-11-18 21:00:41,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 21:00:41,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 21:00:41,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 21:00:41,835 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 21:00:41,835 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 21:00:41,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.i [2024-11-18 21:00:43,285 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 21:00:43,477 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 21:00:43,478 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.i [2024-11-18 21:00:43,487 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e3f0605e/9c4725433e14497e92795fab8c5c2c1a/FLAGf8458ccf9 [2024-11-18 21:00:43,501 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e3f0605e/9c4725433e14497e92795fab8c5c2c1a [2024-11-18 21:00:43,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 21:00:43,505 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 21:00:43,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 21:00:43,506 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 21:00:43,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 21:00:43,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:43,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8d221e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43, skipping insertion in model container [2024-11-18 21:00:43,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:43,544 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 21:00:43,730 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_fillercode_fillercodestructure_filler-pr-cn_file-81.i[919,932] [2024-11-18 21:00:43,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:00:43,848 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 21:00:43,860 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_fillercode_fillercodestructure_filler-pr-cn_file-81.i[919,932] [2024-11-18 21:00:43,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 21:00:43,924 INFO L204 MainTranslator]: Completed translation [2024-11-18 21:00:43,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43 WrapperNode [2024-11-18 21:00:43,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 21:00:43,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 21:00:43,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 21:00:43,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 21:00:43,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:43,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:43,983 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 308 [2024-11-18 21:00:43,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 21:00:43,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 21:00:43,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 21:00:43,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 21:00:43,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:43,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:43,999 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:44,025 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 21:00:44,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:44,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:44,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:44,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:44,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:44,063 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:44,071 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 21:00:44,072 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 21:00:44,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 21:00:44,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 21:00:44,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (1/1) ... [2024-11-18 21:00:44,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 21:00:44,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:00:44,112 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 21:00:44,116 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 21:00:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 21:00:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 21:00:44,159 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 21:00:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 21:00:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 21:00:44,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 21:00:44,266 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 21:00:44,268 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 21:00:44,741 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 21:00:44,742 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 21:00:44,757 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 21:00:44,757 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 21:00:44,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:00:44 BoogieIcfgContainer [2024-11-18 21:00:44,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 21:00:44,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 21:00:44,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 21:00:44,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 21:00:44,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:00:43" (1/3) ... [2024-11-18 21:00:44,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28211484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:00:44, skipping insertion in model container [2024-11-18 21:00:44,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:00:43" (2/3) ... [2024-11-18 21:00:44,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28211484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:00:44, skipping insertion in model container [2024-11-18 21:00:44,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:00:44" (3/3) ... [2024-11-18 21:00:44,767 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-81.i [2024-11-18 21:00:44,781 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 21:00:44,781 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 21:00:44,846 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 21:00:44,851 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;@1ddbaa57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 21:00:44,851 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 21:00:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 82 states have internal predecessors, (115), 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 21:00:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-18 21:00:44,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:00:44,872 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] [2024-11-18 21:00:44,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:00:44,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:00:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1628914907, now seen corresponding path program 1 times [2024-11-18 21:00:44,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:00:44,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470049681] [2024-11-18 21:00:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:00:44,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:00:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:00:45,275 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 21:00:45,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:00:45,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470049681] [2024-11-18 21:00:45,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470049681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 21:00:45,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447965908] [2024-11-18 21:00:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:00:45,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 21:00:45,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 21:00:45,279 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 21:00:45,280 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 21:00:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:00:45,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 21:00:45,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 21:00:45,602 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 21:00:45,602 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 21:00:45,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447965908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:00:45,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 21:00:45,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 21:00:45,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051129248] [2024-11-18 21:00:45,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:00:45,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 21:00:45,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:00:45,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 21:00:45,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 21:00:45,634 INFO L87 Difference]: Start difference. First operand has 134 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 82 states have internal predecessors, (115), 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 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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 21:00:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:00:45,663 INFO L93 Difference]: Finished difference Result 261 states and 474 transitions. [2024-11-18 21:00:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 21:00:45,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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 306 [2024-11-18 21:00:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:00:45,673 INFO L225 Difference]: With dead ends: 261 [2024-11-18 21:00:45,673 INFO L226 Difference]: Without dead ends: 130 [2024-11-18 21:00:45,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 307 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 21:00:45,679 INFO L432 NwaCegarLoop]: 208 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, 208 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 21:00:45,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 21:00:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-18 21:00:45,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-18 21:00:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 78 states have (on average 1.3846153846153846) internal successors, (108), 78 states have internal predecessors, (108), 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 21:00:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 208 transitions. [2024-11-18 21:00:45,734 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 208 transitions. Word has length 306 [2024-11-18 21:00:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:00:45,734 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 208 transitions. [2024-11-18 21:00:45,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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 21:00:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 208 transitions. [2024-11-18 21:00:45,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-18 21:00:45,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:00:45,742 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] [2024-11-18 21:00:45,757 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 21:00:45,942 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 21:00:45,943 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:00:45,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:00:45,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1800754029, now seen corresponding path program 1 times [2024-11-18 21:00:45,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:00:45,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867175421] [2024-11-18 21:00:45,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:00:45,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:00:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:00:46,651 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 21:00:46,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:00:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867175421] [2024-11-18 21:00:46,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867175421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:00:46,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:00:46,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:00:46,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733206170] [2024-11-18 21:00:46,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:00:46,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:00:46,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:00:46,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:00:46,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:00:46,659 INFO L87 Difference]: Start difference. First operand 130 states and 208 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 21:00:46,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:00:46,957 INFO L93 Difference]: Finished difference Result 385 states and 620 transitions. [2024-11-18 21:00:46,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:00:46,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 306 [2024-11-18 21:00:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:00:46,965 INFO L225 Difference]: With dead ends: 385 [2024-11-18 21:00:46,965 INFO L226 Difference]: Without dead ends: 258 [2024-11-18 21:00:46,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:00:46,967 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 114 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:00:46,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 501 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 21:00:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-18 21:00:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2024-11-18 21:00:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 153 states have (on average 1.392156862745098) internal successors, (213), 153 states have internal predecessors, (213), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-18 21:00:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 413 transitions. [2024-11-18 21:00:47,034 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 413 transitions. Word has length 306 [2024-11-18 21:00:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:00:47,035 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 413 transitions. [2024-11-18 21:00:47,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 21:00:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 413 transitions. [2024-11-18 21:00:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 21:00:47,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:00:47,041 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] [2024-11-18 21:00:47,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 21:00:47,042 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:00:47,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:00:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1275684225, now seen corresponding path program 1 times [2024-11-18 21:00:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:00:47,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67468580] [2024-11-18 21:00:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:00:47,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:00:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:00:48,060 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 21:00:48,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:00:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67468580] [2024-11-18 21:00:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67468580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:00:48,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:00:48,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:00:48,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966273586] [2024-11-18 21:00:48,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:00:48,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:00:48,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:00:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:00:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:00:48,065 INFO L87 Difference]: Start difference. First operand 256 states and 413 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 21:00:49,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:00:49,261 INFO L93 Difference]: Finished difference Result 1212 states and 1917 transitions. [2024-11-18 21:00:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 21:00:49,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 307 [2024-11-18 21:00:49,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:00:49,268 INFO L225 Difference]: With dead ends: 1212 [2024-11-18 21:00:49,268 INFO L226 Difference]: Without dead ends: 959 [2024-11-18 21:00:49,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-18 21:00:49,270 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 817 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 21:00:49,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 809 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 21:00:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-11-18 21:00:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 949. [2024-11-18 21:00:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 572 states have (on average 1.3706293706293706) internal successors, (784), 576 states have internal predecessors, (784), 356 states have call successors, (356), 20 states have call predecessors, (356), 20 states have return successors, (356), 352 states have call predecessors, (356), 356 states have call successors, (356) [2024-11-18 21:00:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1496 transitions. [2024-11-18 21:00:49,431 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1496 transitions. Word has length 307 [2024-11-18 21:00:49,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:00:49,432 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1496 transitions. [2024-11-18 21:00:49,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 21:00:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1496 transitions. [2024-11-18 21:00:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 21:00:49,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:00:49,435 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] [2024-11-18 21:00:49,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 21:00:49,436 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:00:49,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:00:49,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1533849663, now seen corresponding path program 1 times [2024-11-18 21:00:49,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:00:49,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380223997] [2024-11-18 21:00:49,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:00:49,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:00:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:00:49,763 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 21:00:49,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:00:49,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380223997] [2024-11-18 21:00:49,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380223997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:00:49,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:00:49,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 21:00:49,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153553255] [2024-11-18 21:00:49,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:00:49,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 21:00:49,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:00:49,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 21:00:49,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 21:00:49,768 INFO L87 Difference]: Start difference. First operand 949 states and 1496 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 21:00:49,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:00:49,957 INFO L93 Difference]: Finished difference Result 2297 states and 3618 transitions. [2024-11-18 21:00:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 21:00:49,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 307 [2024-11-18 21:00:49,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:00:49,969 INFO L225 Difference]: With dead ends: 2297 [2024-11-18 21:00:49,970 INFO L226 Difference]: Without dead ends: 1351 [2024-11-18 21:00:49,973 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 [2024-11-18 21:00:49,974 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 72 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 21:00:49,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 615 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 21:00:49,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2024-11-18 21:00:50,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1341. [2024-11-18 21:00:50,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 924 states have (on average 1.432900432900433) internal successors, (1324), 936 states have internal predecessors, (1324), 388 states have call successors, (388), 28 states have call predecessors, (388), 28 states have return successors, (388), 376 states have call predecessors, (388), 388 states have call successors, (388) [2024-11-18 21:00:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2100 transitions. [2024-11-18 21:00:50,123 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2100 transitions. Word has length 307 [2024-11-18 21:00:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:00:50,124 INFO L471 AbstractCegarLoop]: Abstraction has 1341 states and 2100 transitions. [2024-11-18 21:00:50,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 21:00:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2100 transitions. [2024-11-18 21:00:50,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 21:00:50,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:00:50,128 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] [2024-11-18 21:00:50,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 21:00:50,129 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:00:50,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:00:50,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1481253955, now seen corresponding path program 1 times [2024-11-18 21:00:50,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:00:50,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023991523] [2024-11-18 21:00:50,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:00:50,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:00:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:01:03,338 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 21:01:03,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:01:03,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023991523] [2024-11-18 21:01:03,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023991523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:01:03,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:01:03,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 21:01:03,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552074491] [2024-11-18 21:01:03,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:01:03,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 21:01:03,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:01:03,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 21:01:03,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-18 21:01:03,342 INFO L87 Difference]: Start difference. First operand 1341 states and 2100 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (50), 1 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 21:01:05,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:01:05,604 INFO L93 Difference]: Finished difference Result 3810 states and 5933 transitions. [2024-11-18 21:01:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 21:01:05,605 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (50), 1 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 307 [2024-11-18 21:01:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:01:05,616 INFO L225 Difference]: With dead ends: 3810 [2024-11-18 21:01:05,616 INFO L226 Difference]: Without dead ends: 2472 [2024-11-18 21:01:05,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2024-11-18 21:01:05,621 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 1087 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:01:05,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1320 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 21:01:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2024-11-18 21:01:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1564. [2024-11-18 21:01:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1093 states have (on average 1.4364135407136323) internal successors, (1570), 1105 states have internal predecessors, (1570), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-18 21:01:05,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2446 transitions. [2024-11-18 21:01:05,748 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2446 transitions. Word has length 307 [2024-11-18 21:01:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:01:05,749 INFO L471 AbstractCegarLoop]: Abstraction has 1564 states and 2446 transitions. [2024-11-18 21:01:05,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 2 states have call successors, (50), 1 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 21:01:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2446 transitions. [2024-11-18 21:01:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 21:01:05,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:01:05,754 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] [2024-11-18 21:01:05,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 21:01:05,754 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:01:05,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:01:05,755 INFO L85 PathProgramCache]: Analyzing trace with hash 819568635, now seen corresponding path program 1 times [2024-11-18 21:01:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:01:05,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395980847] [2024-11-18 21:01:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:01:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:01:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:01:13,777 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 21:01:13,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:01:13,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395980847] [2024-11-18 21:01:13,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395980847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:01:13,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:01:13,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 21:01:13,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133018733] [2024-11-18 21:01:13,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:01:13,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 21:01:13,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:01:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 21:01:13,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-18 21:01:13,780 INFO L87 Difference]: Start difference. First operand 1564 states and 2446 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 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 21:01:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:01:16,884 INFO L93 Difference]: Finished difference Result 3754 states and 5854 transitions. [2024-11-18 21:01:16,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 21:01:16,887 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 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 307 [2024-11-18 21:01:16,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:01:16,901 INFO L225 Difference]: With dead ends: 3754 [2024-11-18 21:01:16,901 INFO L226 Difference]: Without dead ends: 2416 [2024-11-18 21:01:16,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-11-18 21:01:16,909 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 828 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 21:01:16,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1124 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 21:01:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2024-11-18 21:01:17,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1564. [2024-11-18 21:01:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1093 states have (on average 1.4364135407136323) internal successors, (1570), 1105 states have internal predecessors, (1570), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-18 21:01:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2446 transitions. [2024-11-18 21:01:17,063 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2446 transitions. Word has length 307 [2024-11-18 21:01:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:01:17,064 INFO L471 AbstractCegarLoop]: Abstraction has 1564 states and 2446 transitions. [2024-11-18 21:01:17,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 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 21:01:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2446 transitions. [2024-11-18 21:01:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 21:01:17,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:01:17,068 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] [2024-11-18 21:01:17,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 21:01:17,069 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:01:17,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:01:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1124769599, now seen corresponding path program 1 times [2024-11-18 21:01:17,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:01:17,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603773636] [2024-11-18 21:01:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:01:17,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:01:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:01:17,645 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 21:01:17,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:01:17,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603773636] [2024-11-18 21:01:17,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603773636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:01:17,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:01:17,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 21:01:17,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118619390] [2024-11-18 21:01:17,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:01:17,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 21:01:17,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:01:17,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 21:01:17,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 21:01:17,650 INFO L87 Difference]: Start difference. First operand 1564 states and 2446 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 21:01:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:01:18,277 INFO L93 Difference]: Finished difference Result 3260 states and 5105 transitions. [2024-11-18 21:01:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 21:01:18,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 307 [2024-11-18 21:01:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:01:18,288 INFO L225 Difference]: With dead ends: 3260 [2024-11-18 21:01:18,289 INFO L226 Difference]: Without dead ends: 1922 [2024-11-18 21:01:18,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-18 21:01:18,295 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 192 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:01:18,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 877 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:01:18,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2024-11-18 21:01:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1584. [2024-11-18 21:01:18,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1113 states have (on average 1.4366576819407009) internal successors, (1599), 1125 states have internal predecessors, (1599), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-18 21:01:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2475 transitions. [2024-11-18 21:01:18,411 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2475 transitions. Word has length 307 [2024-11-18 21:01:18,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:01:18,412 INFO L471 AbstractCegarLoop]: Abstraction has 1584 states and 2475 transitions. [2024-11-18 21:01:18,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 21:01:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2475 transitions. [2024-11-18 21:01:18,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 21:01:18,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:01:18,415 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] [2024-11-18 21:01:18,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 21:01:18,416 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:01:18,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:01:18,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1262399237, now seen corresponding path program 1 times [2024-11-18 21:01:18,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:01:18,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243515942] [2024-11-18 21:01:18,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:01:18,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:01:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:01:27,159 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 21:01:27,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:01:27,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243515942] [2024-11-18 21:01:27,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243515942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:01:27,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:01:27,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 21:01:27,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624665065] [2024-11-18 21:01:27,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:01:27,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 21:01:27,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:01:27,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 21:01:27,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:01:27,161 INFO L87 Difference]: Start difference. First operand 1584 states and 2475 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 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 21:01:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:01:28,795 INFO L93 Difference]: Finished difference Result 3772 states and 5887 transitions. [2024-11-18 21:01:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 21:01:28,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 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 307 [2024-11-18 21:01:28,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:01:28,808 INFO L225 Difference]: With dead ends: 3772 [2024-11-18 21:01:28,808 INFO L226 Difference]: Without dead ends: 2434 [2024-11-18 21:01:28,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:01:28,814 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 486 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:01:28,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 842 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:01:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2024-11-18 21:01:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1660. [2024-11-18 21:01:28,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1189 states have (on average 1.4524810765349032) internal successors, (1727), 1201 states have internal predecessors, (1727), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-18 21:01:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2603 transitions. [2024-11-18 21:01:28,931 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2603 transitions. Word has length 307 [2024-11-18 21:01:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:01:28,932 INFO L471 AbstractCegarLoop]: Abstraction has 1660 states and 2603 transitions. [2024-11-18 21:01:28,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 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 21:01:28,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2603 transitions. [2024-11-18 21:01:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-18 21:01:28,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:01:28,935 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] [2024-11-18 21:01:28,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 21:01:28,935 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:01:28,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:01:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1038423353, now seen corresponding path program 1 times [2024-11-18 21:01:28,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:01:28,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677394374] [2024-11-18 21:01:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:01:28,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:01:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:01:36,862 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 21:01:36,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:01:36,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677394374] [2024-11-18 21:01:36,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677394374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:01:36,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:01:36,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 21:01:36,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245944037] [2024-11-18 21:01:36,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:01:36,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 21:01:36,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:01:36,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 21:01:36,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:01:36,866 INFO L87 Difference]: Start difference. First operand 1660 states and 2603 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 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 21:01:38,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:01:38,524 INFO L93 Difference]: Finished difference Result 3662 states and 5734 transitions. [2024-11-18 21:01:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 21:01:38,525 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 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 307 [2024-11-18 21:01:38,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:01:38,537 INFO L225 Difference]: With dead ends: 3662 [2024-11-18 21:01:38,537 INFO L226 Difference]: Without dead ends: 2136 [2024-11-18 21:01:38,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-18 21:01:38,543 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 291 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 21:01:38,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 821 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 21:01:38,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2024-11-18 21:01:38,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 1652. [2024-11-18 21:01:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1181 states have (on average 1.4521591871295512) internal successors, (1715), 1193 states have internal predecessors, (1715), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-18 21:01:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2591 transitions. [2024-11-18 21:01:38,653 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2591 transitions. Word has length 307 [2024-11-18 21:01:38,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:01:38,654 INFO L471 AbstractCegarLoop]: Abstraction has 1652 states and 2591 transitions. [2024-11-18 21:01:38,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 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 21:01:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2591 transitions. [2024-11-18 21:01:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-18 21:01:38,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:01:38,656 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] [2024-11-18 21:01:38,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 21:01:38,657 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:01:38,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:01:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1863157820, now seen corresponding path program 1 times [2024-11-18 21:01:38,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:01:38,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639823423] [2024-11-18 21:01:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:01:38,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:01:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:01:43,043 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 21:01:43,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:01:43,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639823423] [2024-11-18 21:01:43,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639823423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:01:43,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:01:43,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 21:01:43,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012344835] [2024-11-18 21:01:43,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:01:43,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 21:01:43,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:01:43,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 21:01:43,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-18 21:01:43,045 INFO L87 Difference]: Start difference. First operand 1652 states and 2591 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 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 21:01:43,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:01:43,656 INFO L93 Difference]: Finished difference Result 4823 states and 7597 transitions. [2024-11-18 21:01:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 21:01:43,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 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 308 [2024-11-18 21:01:43,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:01:43,670 INFO L225 Difference]: With dead ends: 4823 [2024-11-18 21:01:43,671 INFO L226 Difference]: Without dead ends: 3297 [2024-11-18 21:01:43,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-18 21:01:43,675 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 420 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 21:01:43,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1111 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 21:01:43,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2024-11-18 21:01:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 1905. [2024-11-18 21:01:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1434 states have (on average 1.492329149232915) internal successors, (2140), 1446 states have internal predecessors, (2140), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-18 21:01:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 3016 transitions. [2024-11-18 21:01:43,817 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 3016 transitions. Word has length 308 [2024-11-18 21:01:43,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:01:43,818 INFO L471 AbstractCegarLoop]: Abstraction has 1905 states and 3016 transitions. [2024-11-18 21:01:43,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 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 21:01:43,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 3016 transitions. [2024-11-18 21:01:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-18 21:01:43,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:01:43,820 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] [2024-11-18 21:01:43,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 21:01:43,821 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:01:43,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:01:43,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1151945798, now seen corresponding path program 1 times [2024-11-18 21:01:43,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:01:43,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612085223] [2024-11-18 21:01:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:01:43,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:01:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:01:50,033 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 21:01:50,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:01:50,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612085223] [2024-11-18 21:01:50,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612085223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:01:50,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:01:50,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 21:01:50,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997390647] [2024-11-18 21:01:50,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:01:50,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 21:01:50,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:01:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 21:01:50,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 21:01:50,036 INFO L87 Difference]: Start difference. First operand 1905 states and 3016 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 21:01:51,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:01:51,629 INFO L93 Difference]: Finished difference Result 5431 states and 8550 transitions. [2024-11-18 21:01:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 21:01:51,630 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 308 [2024-11-18 21:01:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:01:51,644 INFO L225 Difference]: With dead ends: 5431 [2024-11-18 21:01:51,645 INFO L226 Difference]: Without dead ends: 3665 [2024-11-18 21:01:51,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-18 21:01:51,651 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 958 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 21:01:51,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 1148 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 21:01:51,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2024-11-18 21:01:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 1925. [2024-11-18 21:01:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1454 states have (on average 1.4965612104539203) internal successors, (2176), 1466 states have internal predecessors, (2176), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-18 21:01:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3052 transitions. [2024-11-18 21:01:51,814 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3052 transitions. Word has length 308 [2024-11-18 21:01:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:01:51,815 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 3052 transitions. [2024-11-18 21:01:51,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 21:01:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3052 transitions. [2024-11-18 21:01:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-18 21:01:51,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:01:51,818 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] [2024-11-18 21:01:51,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 21:01:51,819 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:01:51,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:01:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash -130986886, now seen corresponding path program 1 times [2024-11-18 21:01:51,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:01:51,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357605793] [2024-11-18 21:01:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:01:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:01:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 21:01:56,203 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 21:01:56,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 21:01:56,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357605793] [2024-11-18 21:01:56,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357605793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 21:01:56,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 21:01:56,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 21:01:56,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275327901] [2024-11-18 21:01:56,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 21:01:56,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 21:01:56,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 21:01:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 21:01:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 21:01:56,206 INFO L87 Difference]: Start difference. First operand 1925 states and 3052 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 21:01:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 21:01:58,018 INFO L93 Difference]: Finished difference Result 5089 states and 8035 transitions. [2024-11-18 21:01:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 21:01:58,019 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 308 [2024-11-18 21:01:58,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 21:01:58,033 INFO L225 Difference]: With dead ends: 5089 [2024-11-18 21:01:58,033 INFO L226 Difference]: Without dead ends: 3323 [2024-11-18 21:01:58,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-11-18 21:01:58,040 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 648 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 21:01:58,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1380 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 21:01:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2024-11-18 21:01:58,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 1925. [2024-11-18 21:01:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1454 states have (on average 1.4965612104539203) internal successors, (2176), 1466 states have internal predecessors, (2176), 438 states have call successors, (438), 32 states have call predecessors, (438), 32 states have return successors, (438), 426 states have call predecessors, (438), 438 states have call successors, (438) [2024-11-18 21:01:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3052 transitions. [2024-11-18 21:01:58,179 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3052 transitions. Word has length 308 [2024-11-18 21:01:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 21:01:58,180 INFO L471 AbstractCegarLoop]: Abstraction has 1925 states and 3052 transitions. [2024-11-18 21:01:58,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 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 21:01:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3052 transitions. [2024-11-18 21:01:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-18 21:01:58,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 21:01:58,183 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] [2024-11-18 21:01:58,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 21:01:58,183 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 21:01:58,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 21:01:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1148876792, now seen corresponding path program 1 times [2024-11-18 21:01:58,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 21:01:58,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628131068] [2024-11-18 21:01:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 21:01:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 21:01:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat