./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.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_loopvsstraightlinecode_100-while_file-63.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 e08b130d986262ceb0772f034a60f5b23796cc6f800ada70e6af5834a62fdc07 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:36:05,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:36:05,155 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:36:05,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:36:05,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:36:05,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:36:05,187 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:36:05,187 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:36:05,188 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:36:05,192 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:36:05,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:36:05,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:36:05,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:36:05,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:36:05,194 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:36:05,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:36:05,194 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:36:05,194 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:36:05,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:36:05,195 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:36:05,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:36:05,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:36:05,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:36:05,199 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:36:05,199 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:36:05,200 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:36:05,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:36:05,200 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:36:05,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:36:05,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:36:05,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:36:05,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:36:05,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:36:05,202 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:36:05,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:36:05,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:36:05,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:36:05,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:36:05,204 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:36:05,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:36:05,204 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:36:05,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:36:05,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e08b130d986262ceb0772f034a60f5b23796cc6f800ada70e6af5834a62fdc07 [2024-11-18 22:36:05,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:36:05,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:36:05,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:36:05,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:36:05,495 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:36:05,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2024-11-18 22:36:06,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:36:07,202 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:36:07,203 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-while_file-63.i [2024-11-18 22:36:07,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60e7cb48/18b2bdedb4834ca4945238c48e6353f8/FLAGc753264cf [2024-11-18 22:36:07,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60e7cb48/18b2bdedb4834ca4945238c48e6353f8 [2024-11-18 22:36:07,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:36:07,235 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:36:07,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:36:07,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:36:07,242 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:36:07,242 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133bcf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07, skipping insertion in model container [2024-11-18 22:36:07,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,282 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:36:07,479 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_loopvsstraightlinecode_100-while_file-63.i[916,929] [2024-11-18 22:36:07,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:36:07,609 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:36:07,624 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_loopvsstraightlinecode_100-while_file-63.i[916,929] [2024-11-18 22:36:07,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:36:07,696 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:36:07,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07 WrapperNode [2024-11-18 22:36:07,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:36:07,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:36:07,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:36:07,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:36:07,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,810 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 212 [2024-11-18 22:36:07,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:36:07,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:36:07,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:36:07,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:36:07,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,855 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 22:36:07,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,856 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:36:07,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:36:07,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:36:07,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:36:07,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (1/1) ... [2024-11-18 22:36:07,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:36:07,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:36:07,947 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 22:36:07,953 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 22:36:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:36:07,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:36:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:36:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:36:08,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:36:08,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:36:08,112 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:36:08,115 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:36:08,712 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-18 22:36:08,712 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:36:08,730 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:36:08,731 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:36:08,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:36:08 BoogieIcfgContainer [2024-11-18 22:36:08,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:36:08,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:36:08,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:36:08,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:36:08,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:36:07" (1/3) ... [2024-11-18 22:36:08,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2c1656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:36:08, skipping insertion in model container [2024-11-18 22:36:08,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:36:07" (2/3) ... [2024-11-18 22:36:08,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2c1656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:36:08, skipping insertion in model container [2024-11-18 22:36:08,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:36:08" (3/3) ... [2024-11-18 22:36:08,741 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-while_file-63.i [2024-11-18 22:36:08,761 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:36:08,762 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:36:08,833 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:36:08,840 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;@4d3a548d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:36:08,841 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:36:08,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 67 states have internal predecessors, (98), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 22:36:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:36:08,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:08,858 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:08,858 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:08,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1132356308, now seen corresponding path program 1 times [2024-11-18 22:36:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:08,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354640190] [2024-11-18 22:36:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:08,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:09,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:09,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354640190] [2024-11-18 22:36:09,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354640190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:09,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:09,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:36:09,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951477076] [2024-11-18 22:36:09,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:09,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:36:09,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:09,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:36:09,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:36:09,515 INFO L87 Difference]: Start difference. First operand has 89 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 67 states have internal predecessors, (98), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:09,591 INFO L93 Difference]: Finished difference Result 170 states and 290 transitions. [2024-11-18 22:36:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:36:09,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:36:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:09,607 INFO L225 Difference]: With dead ends: 170 [2024-11-18 22:36:09,607 INFO L226 Difference]: Without dead ends: 84 [2024-11-18 22:36:09,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:36:09,614 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:09,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:36:09,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-18 22:36:09,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-18 22:36:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 62 states have internal predecessors, (86), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 22:36:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 126 transitions. [2024-11-18 22:36:09,676 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 126 transitions. Word has length 143 [2024-11-18 22:36:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:09,677 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 126 transitions. [2024-11-18 22:36:09,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:09,678 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 126 transitions. [2024-11-18 22:36:09,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:36:09,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:09,681 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:09,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 22:36:09,681 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:09,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:09,687 INFO L85 PathProgramCache]: Analyzing trace with hash -301696116, now seen corresponding path program 1 times [2024-11-18 22:36:09,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:09,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028861] [2024-11-18 22:36:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:09,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:09,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:09,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028861] [2024-11-18 22:36:09,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:09,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:09,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 22:36:09,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163455061] [2024-11-18 22:36:09,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:09,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 22:36:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 22:36:09,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:36:09,969 INFO L87 Difference]: Start difference. First operand 84 states and 126 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:10,060 INFO L93 Difference]: Finished difference Result 216 states and 323 transitions. [2024-11-18 22:36:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 22:36:10,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:36:10,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:10,065 INFO L225 Difference]: With dead ends: 216 [2024-11-18 22:36:10,067 INFO L226 Difference]: Without dead ends: 135 [2024-11-18 22:36:10,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 22:36:10,069 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 74 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:10,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 231 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:36:10,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-18 22:36:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2024-11-18 22:36:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 101 states have (on average 1.386138613861386) internal successors, (140), 102 states have internal predecessors, (140), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-18 22:36:10,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 196 transitions. [2024-11-18 22:36:10,100 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 196 transitions. Word has length 143 [2024-11-18 22:36:10,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:10,101 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 196 transitions. [2024-11-18 22:36:10,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 196 transitions. [2024-11-18 22:36:10,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:36:10,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:10,106 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:10,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:36:10,107 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:10,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash 151674570, now seen corresponding path program 1 times [2024-11-18 22:36:10,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:10,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787405222] [2024-11-18 22:36:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:10,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:10,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:10,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787405222] [2024-11-18 22:36:10,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787405222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:10,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:10,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:36:10,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131216184] [2024-11-18 22:36:10,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:10,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:36:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:36:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:36:10,741 INFO L87 Difference]: Start difference. First operand 132 states and 196 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:10,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:10,935 INFO L93 Difference]: Finished difference Result 379 states and 563 transitions. [2024-11-18 22:36:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:36:10,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:36:10,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:10,942 INFO L225 Difference]: With dead ends: 379 [2024-11-18 22:36:10,942 INFO L226 Difference]: Without dead ends: 250 [2024-11-18 22:36:10,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:36:10,944 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 92 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:10,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 350 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:36:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-18 22:36:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 184. [2024-11-18 22:36:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 131 states have (on average 1.3435114503816794) internal successors, (176), 132 states have internal predecessors, (176), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:36:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 272 transitions. [2024-11-18 22:36:10,988 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 272 transitions. Word has length 143 [2024-11-18 22:36:10,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:10,988 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 272 transitions. [2024-11-18 22:36:10,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 272 transitions. [2024-11-18 22:36:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:36:10,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:10,997 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:10,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:36:10,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:10,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:10,998 INFO L85 PathProgramCache]: Analyzing trace with hash 17661064, now seen corresponding path program 1 times [2024-11-18 22:36:10,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:10,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748705014] [2024-11-18 22:36:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:11,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:24,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:24,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748705014] [2024-11-18 22:36:24,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748705014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:24,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:24,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 22:36:24,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754973508] [2024-11-18 22:36:24,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:24,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 22:36:24,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 22:36:24,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:36:24,104 INFO L87 Difference]: Start difference. First operand 184 states and 272 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:26,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:26,404 INFO L93 Difference]: Finished difference Result 765 states and 1107 transitions. [2024-11-18 22:36:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 22:36:26,406 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:36:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:26,410 INFO L225 Difference]: With dead ends: 765 [2024-11-18 22:36:26,410 INFO L226 Difference]: Without dead ends: 636 [2024-11-18 22:36:26,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2024-11-18 22:36:26,414 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 692 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:26,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 846 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 22:36:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2024-11-18 22:36:26,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 226. [2024-11-18 22:36:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 173 states have (on average 1.369942196531792) internal successors, (237), 174 states have internal predecessors, (237), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:36:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 333 transitions. [2024-11-18 22:36:26,453 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 333 transitions. Word has length 143 [2024-11-18 22:36:26,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:26,454 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 333 transitions. [2024-11-18 22:36:26,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:26,455 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 333 transitions. [2024-11-18 22:36:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:36:26,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:26,457 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:26,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:36:26,457 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:26,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:26,458 INFO L85 PathProgramCache]: Analyzing trace with hash -791685562, now seen corresponding path program 1 times [2024-11-18 22:36:26,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:26,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476862406] [2024-11-18 22:36:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:26,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:35,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:35,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476862406] [2024-11-18 22:36:35,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476862406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:35,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:35,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 22:36:35,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329581340] [2024-11-18 22:36:35,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:35,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 22:36:35,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:35,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 22:36:35,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:36:35,463 INFO L87 Difference]: Start difference. First operand 226 states and 333 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:37,636 INFO L93 Difference]: Finished difference Result 629 states and 913 transitions. [2024-11-18 22:36:37,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 22:36:37,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:36:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:37,647 INFO L225 Difference]: With dead ends: 629 [2024-11-18 22:36:37,647 INFO L226 Difference]: Without dead ends: 458 [2024-11-18 22:36:37,648 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-18 22:36:37,650 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 407 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:37,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 832 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 22:36:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-18 22:36:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 263. [2024-11-18 22:36:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 210 states have (on average 1.3904761904761904) internal successors, (292), 211 states have internal predecessors, (292), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:36:37,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 388 transitions. [2024-11-18 22:36:37,688 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 388 transitions. Word has length 143 [2024-11-18 22:36:37,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:37,688 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 388 transitions. [2024-11-18 22:36:37,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:37,689 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 388 transitions. [2024-11-18 22:36:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:36:37,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:37,692 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:37,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:36:37,693 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:37,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash 440362890, now seen corresponding path program 1 times [2024-11-18 22:36:37,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:37,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112547674] [2024-11-18 22:36:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:37,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:37,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:37,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112547674] [2024-11-18 22:36:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112547674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:37,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:37,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:36:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689095627] [2024-11-18 22:36:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:37,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:36:37,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:36:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:36:37,958 INFO L87 Difference]: Start difference. First operand 263 states and 388 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:38,100 INFO L93 Difference]: Finished difference Result 559 states and 822 transitions. [2024-11-18 22:36:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:36:38,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:36:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:38,107 INFO L225 Difference]: With dead ends: 559 [2024-11-18 22:36:38,107 INFO L226 Difference]: Without dead ends: 352 [2024-11-18 22:36:38,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 22:36:38,110 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 155 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:38,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 317 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:36:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-18 22:36:38,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 251. [2024-11-18 22:36:38,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 198 states have (on average 1.3737373737373737) internal successors, (272), 199 states have internal predecessors, (272), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-18 22:36:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 368 transitions. [2024-11-18 22:36:38,141 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 368 transitions. Word has length 143 [2024-11-18 22:36:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:38,141 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 368 transitions. [2024-11-18 22:36:38,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 368 transitions. [2024-11-18 22:36:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:36:38,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:38,145 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:38,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:36:38,146 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:38,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:38,146 INFO L85 PathProgramCache]: Analyzing trace with hash 804640654, now seen corresponding path program 1 times [2024-11-18 22:36:38,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:38,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160069334] [2024-11-18 22:36:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:38,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:38,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:38,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160069334] [2024-11-18 22:36:38,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160069334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:38,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:38,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:36:38,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124828337] [2024-11-18 22:36:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:38,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:36:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:36:38,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:36:38,702 INFO L87 Difference]: Start difference. First operand 251 states and 368 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:39,008 INFO L93 Difference]: Finished difference Result 526 states and 771 transitions. [2024-11-18 22:36:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:36:39,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:36:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:39,013 INFO L225 Difference]: With dead ends: 526 [2024-11-18 22:36:39,013 INFO L226 Difference]: Without dead ends: 331 [2024-11-18 22:36:39,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:36:39,016 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 165 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:39,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 543 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 22:36:39,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-18 22:36:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 316. [2024-11-18 22:36:39,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 241 states have (on average 1.3568464730290457) internal successors, (327), 243 states have internal predecessors, (327), 68 states have call successors, (68), 6 states have call predecessors, (68), 6 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 22:36:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 463 transitions. [2024-11-18 22:36:39,044 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 463 transitions. Word has length 143 [2024-11-18 22:36:39,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:39,045 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 463 transitions. [2024-11-18 22:36:39,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:39,045 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 463 transitions. [2024-11-18 22:36:39,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-18 22:36:39,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:39,047 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:39,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 22:36:39,047 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:39,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash -4705972, now seen corresponding path program 1 times [2024-11-18 22:36:39,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:39,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185677045] [2024-11-18 22:36:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:39,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:44,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:44,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185677045] [2024-11-18 22:36:44,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185677045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:44,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:44,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 22:36:44,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192601980] [2024-11-18 22:36:44,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:44,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 22:36:44,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:44,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 22:36:44,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:36:44,419 INFO L87 Difference]: Start difference. First operand 316 states and 463 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:46,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:46,198 INFO L93 Difference]: Finished difference Result 837 states and 1211 transitions. [2024-11-18 22:36:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 22:36:46,199 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-18 22:36:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:46,205 INFO L225 Difference]: With dead ends: 837 [2024-11-18 22:36:46,206 INFO L226 Difference]: Without dead ends: 577 [2024-11-18 22:36:46,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2024-11-18 22:36:46,207 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 420 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:46,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 780 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 22:36:46,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-18 22:36:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 356. [2024-11-18 22:36:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 281 states have (on average 1.3629893238434163) internal successors, (383), 283 states have internal predecessors, (383), 68 states have call successors, (68), 6 states have call predecessors, (68), 6 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 22:36:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 519 transitions. [2024-11-18 22:36:46,263 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 519 transitions. Word has length 143 [2024-11-18 22:36:46,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:46,263 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 519 transitions. [2024-11-18 22:36:46,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:46,264 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 519 transitions. [2024-11-18 22:36:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:36:46,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:46,265 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:46,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 22:36:46,266 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:46,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1149682895, now seen corresponding path program 1 times [2024-11-18 22:36:46,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:46,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127655310] [2024-11-18 22:36:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:46,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:50,701 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:50,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:50,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127655310] [2024-11-18 22:36:50,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127655310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:50,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:50,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 22:36:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936133897] [2024-11-18 22:36:50,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:50,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:36:50,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:36:50,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:36:50,704 INFO L87 Difference]: Start difference. First operand 356 states and 519 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:52,025 INFO L93 Difference]: Finished difference Result 948 states and 1377 transitions. [2024-11-18 22:36:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 22:36:52,026 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:36:52,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:52,030 INFO L225 Difference]: With dead ends: 948 [2024-11-18 22:36:52,030 INFO L226 Difference]: Without dead ends: 688 [2024-11-18 22:36:52,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2024-11-18 22:36:52,032 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 777 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:52,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 554 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 22:36:52,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-18 22:36:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 342. [2024-11-18 22:36:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 267 states have (on average 1.3632958801498127) internal successors, (364), 269 states have internal predecessors, (364), 68 states have call successors, (68), 6 states have call predecessors, (68), 6 states have return successors, (68), 66 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-18 22:36:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 500 transitions. [2024-11-18 22:36:52,062 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 500 transitions. Word has length 144 [2024-11-18 22:36:52,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:52,063 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 500 transitions. [2024-11-18 22:36:52,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:52,063 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 500 transitions. [2024-11-18 22:36:52,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:36:52,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:52,065 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:52,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 22:36:52,065 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:52,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:52,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1399488444, now seen corresponding path program 1 times [2024-11-18 22:36:52,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:52,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591834307] [2024-11-18 22:36:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:52,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591834307] [2024-11-18 22:36:52,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591834307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:52,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:52,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:36:52,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284879389] [2024-11-18 22:36:52,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:52,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:36:52,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:52,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:36:52,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:36:52,179 INFO L87 Difference]: Start difference. First operand 342 states and 500 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:52,236 INFO L93 Difference]: Finished difference Result 776 states and 1130 transitions. [2024-11-18 22:36:52,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:36:52,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:36:52,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:52,240 INFO L225 Difference]: With dead ends: 776 [2024-11-18 22:36:52,241 INFO L226 Difference]: Without dead ends: 530 [2024-11-18 22:36:52,242 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 22:36:52,242 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 63 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:52,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 338 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:36:52,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-18 22:36:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2024-11-18 22:36:52,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 428 states have (on average 1.3621495327102804) internal successors, (583), 433 states have internal predecessors, (583), 86 states have call successors, (86), 10 states have call predecessors, (86), 10 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 22:36:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 755 transitions. [2024-11-18 22:36:52,284 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 755 transitions. Word has length 144 [2024-11-18 22:36:52,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:52,284 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 755 transitions. [2024-11-18 22:36:52,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:52,285 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 755 transitions. [2024-11-18 22:36:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:36:52,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:52,288 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:52,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 22:36:52,288 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:52,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:52,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2063655155, now seen corresponding path program 1 times [2024-11-18 22:36:52,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:52,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337661498] [2024-11-18 22:36:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:52,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:56,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:56,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337661498] [2024-11-18 22:36:56,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337661498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:56,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:56,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:36:56,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125064964] [2024-11-18 22:36:56,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:56,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:36:56,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:56,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:36:56,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:36:56,842 INFO L87 Difference]: Start difference. First operand 525 states and 755 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:58,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:36:58,166 INFO L93 Difference]: Finished difference Result 1359 states and 1945 transitions. [2024-11-18 22:36:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 22:36:58,167 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:36:58,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:36:58,173 INFO L225 Difference]: With dead ends: 1359 [2024-11-18 22:36:58,174 INFO L226 Difference]: Without dead ends: 958 [2024-11-18 22:36:58,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-18 22:36:58,176 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 457 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:36:58,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 668 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 22:36:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2024-11-18 22:36:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 507. [2024-11-18 22:36:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 410 states have (on average 1.3585365853658538) internal successors, (557), 415 states have internal predecessors, (557), 86 states have call successors, (86), 10 states have call predecessors, (86), 10 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 22:36:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 729 transitions. [2024-11-18 22:36:58,220 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 729 transitions. Word has length 144 [2024-11-18 22:36:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:36:58,220 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 729 transitions. [2024-11-18 22:36:58,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:36:58,221 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 729 transitions. [2024-11-18 22:36:58,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:36:58,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:36:58,222 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:36:58,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 22:36:58,223 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:36:58,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:36:58,223 INFO L85 PathProgramCache]: Analyzing trace with hash -464954213, now seen corresponding path program 1 times [2024-11-18 22:36:58,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:36:58,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634278470] [2024-11-18 22:36:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:36:58,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:36:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:36:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:36:59,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:36:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634278470] [2024-11-18 22:36:59,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634278470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:36:59,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:36:59,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:36:59,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628382145] [2024-11-18 22:36:59,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:36:59,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:36:59,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:36:59,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:36:59,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:36:59,298 INFO L87 Difference]: Start difference. First operand 507 states and 729 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:37:00,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:00,378 INFO L93 Difference]: Finished difference Result 1679 states and 2364 transitions. [2024-11-18 22:37:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 22:37:00,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:37:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:00,388 INFO L225 Difference]: With dead ends: 1679 [2024-11-18 22:37:00,388 INFO L226 Difference]: Without dead ends: 1228 [2024-11-18 22:37:00,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2024-11-18 22:37:00,391 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 412 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:00,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1036 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:37:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2024-11-18 22:37:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 896. [2024-11-18 22:37:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 787 states have (on average 1.395171537484117) internal successors, (1098), 796 states have internal predecessors, (1098), 94 states have call successors, (94), 14 states have call predecessors, (94), 14 states have return successors, (94), 85 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-18 22:37:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1286 transitions. [2024-11-18 22:37:00,458 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1286 transitions. Word has length 144 [2024-11-18 22:37:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:00,458 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1286 transitions. [2024-11-18 22:37:00,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:37:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1286 transitions. [2024-11-18 22:37:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:37:00,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:00,462 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:00,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 22:37:00,462 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:00,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:00,463 INFO L85 PathProgramCache]: Analyzing trace with hash 402816475, now seen corresponding path program 1 times [2024-11-18 22:37:00,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:00,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688227251] [2024-11-18 22:37:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:00,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:37:00,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:00,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688227251] [2024-11-18 22:37:00,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688227251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:37:00,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:37:00,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:37:00,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507610675] [2024-11-18 22:37:00,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:37:00,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:37:00,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:37:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:37:00,743 INFO L87 Difference]: Start difference. First operand 896 states and 1286 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:37:00,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:00,958 INFO L93 Difference]: Finished difference Result 1596 states and 2295 transitions. [2024-11-18 22:37:00,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:37:00,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:37:00,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:00,966 INFO L225 Difference]: With dead ends: 1596 [2024-11-18 22:37:00,966 INFO L226 Difference]: Without dead ends: 1091 [2024-11-18 22:37:00,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:37:00,970 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 205 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:00,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 497 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:37:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2024-11-18 22:37:01,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 702. [2024-11-18 22:37:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 643 states have (on average 1.405909797822706) internal successors, (904), 646 states have internal predecessors, (904), 50 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-18 22:37:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1004 transitions. [2024-11-18 22:37:01,020 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1004 transitions. Word has length 144 [2024-11-18 22:37:01,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:01,022 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 1004 transitions. [2024-11-18 22:37:01,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:37:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1004 transitions. [2024-11-18 22:37:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:37:01,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:01,025 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:01,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 22:37:01,026 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:01,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:01,026 INFO L85 PathProgramCache]: Analyzing trace with hash -406530151, now seen corresponding path program 1 times [2024-11-18 22:37:01,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:01,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312440699] [2024-11-18 22:37:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:37:05,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:05,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312440699] [2024-11-18 22:37:05,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312440699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:37:05,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:37:05,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 22:37:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276734] [2024-11-18 22:37:05,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:37:05,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 22:37:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 22:37:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:37:05,070 INFO L87 Difference]: Start difference. First operand 702 states and 1004 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:37:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:06,773 INFO L93 Difference]: Finished difference Result 1151 states and 1615 transitions. [2024-11-18 22:37:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 22:37:06,773 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:37:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:06,777 INFO L225 Difference]: With dead ends: 1151 [2024-11-18 22:37:06,777 INFO L226 Difference]: Without dead ends: 830 [2024-11-18 22:37:06,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2024-11-18 22:37:06,779 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 412 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:06,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 916 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 22:37:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2024-11-18 22:37:06,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 720. [2024-11-18 22:37:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 654 states have (on average 1.3990825688073394) internal successors, (915), 657 states have internal predecessors, (915), 54 states have call successors, (54), 11 states have call predecessors, (54), 11 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 22:37:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1023 transitions. [2024-11-18 22:37:06,828 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1023 transitions. Word has length 144 [2024-11-18 22:37:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:06,828 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1023 transitions. [2024-11-18 22:37:06,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:37:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1023 transitions. [2024-11-18 22:37:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-18 22:37:06,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:06,831 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:06,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 22:37:06,831 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:06,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:06,832 INFO L85 PathProgramCache]: Analyzing trace with hash 767094239, now seen corresponding path program 1 times [2024-11-18 22:37:06,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:06,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015289153] [2024-11-18 22:37:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:06,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:37:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-18 22:37:07,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:37:07,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015289153] [2024-11-18 22:37:07,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015289153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:37:07,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:37:07,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:37:07,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469424334] [2024-11-18 22:37:07,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:37:07,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:37:07,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:37:07,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:37:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:37:07,146 INFO L87 Difference]: Start difference. First operand 720 states and 1023 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:37:07,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:37:07,333 INFO L93 Difference]: Finished difference Result 1534 states and 2186 transitions. [2024-11-18 22:37:07,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 22:37:07,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-18 22:37:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:37:07,339 INFO L225 Difference]: With dead ends: 1534 [2024-11-18 22:37:07,340 INFO L226 Difference]: Without dead ends: 1176 [2024-11-18 22:37:07,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 22:37:07,344 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 214 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:37:07,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 502 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 22:37:07,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-18 22:37:07,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 719. [2024-11-18 22:37:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 653 states have (on average 1.3996937212863707) internal successors, (914), 656 states have internal predecessors, (914), 54 states have call successors, (54), 11 states have call predecessors, (54), 11 states have return successors, (54), 51 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-18 22:37:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1022 transitions. [2024-11-18 22:37:07,402 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1022 transitions. Word has length 144 [2024-11-18 22:37:07,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:37:07,403 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 1022 transitions. [2024-11-18 22:37:07,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-18 22:37:07,403 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1022 transitions. [2024-11-18 22:37:07,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 22:37:07,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:37:07,405 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:37:07,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 22:37:07,405 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:37:07,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:37:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1135268803, now seen corresponding path program 1 times [2024-11-18 22:37:07,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:37:07,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088542014] [2024-11-18 22:37:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:37:07,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:37:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat