./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-94.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-94.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 a92ccd1f56cdb28b8e6efc63e50fd814467549956882758cf5aa04b7a8a9eb25 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:49:06,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:49:07,026 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:49:07,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:49:07,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:49:07,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:49:07,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:49:07,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:49:07,054 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:49:07,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:49:07,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:49:07,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:49:07,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:49:07,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:49:07,057 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:49:07,057 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:49:07,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:49:07,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:49:07,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:49:07,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:49:07,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:49:07,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:49:07,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:49:07,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:49:07,065 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:49:07,065 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:49:07,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:49:07,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:49:07,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:49:07,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:49:07,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:49:07,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:49:07,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:49:07,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:49:07,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:49:07,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:49:07,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:49:07,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:49:07,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:49:07,070 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:49:07,070 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:49:07,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:49:07,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a92ccd1f56cdb28b8e6efc63e50fd814467549956882758cf5aa04b7a8a9eb25 [2024-11-18 23:49:07,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:49:07,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:49:07,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:49:07,335 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:49:07,336 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:49:07,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-94.i [2024-11-18 23:49:08,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:49:09,062 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:49:09,063 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-94.i [2024-11-18 23:49:09,074 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1978be2a/bfe699aa1b0343f4bee2e44ae5fb6b3d/FLAGbd9cb1b72 [2024-11-18 23:49:09,086 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1978be2a/bfe699aa1b0343f4bee2e44ae5fb6b3d [2024-11-18 23:49:09,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:49:09,090 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:49:09,091 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:49:09,091 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:49:09,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:49:09,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45594001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09, skipping insertion in model container [2024-11-18 23:49:09,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,140 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:49:09,346 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-94.i[916,929] [2024-11-18 23:49:09,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:49:09,538 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:49:09,547 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-94.i[916,929] [2024-11-18 23:49:09,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:49:09,670 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:49:09,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09 WrapperNode [2024-11-18 23:49:09,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:49:09,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:49:09,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:49:09,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:49:09,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,794 INFO L138 Inliner]: procedures = 26, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 496 [2024-11-18 23:49:09,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:49:09,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:49:09,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:49:09,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:49:09,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,876 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:49:09,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:49:09,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:49:09,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:49:09,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:49:09,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (1/1) ... [2024-11-18 23:49:09,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:49:09,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:09,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:49:09,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:49:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:49:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:49:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:49:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:49:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:49:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:49:10,154 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:49:10,157 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:49:11,023 INFO L? ?]: Removed 90 outVars from TransFormulas that were not future-live. [2024-11-18 23:49:11,023 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:49:11,046 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:49:11,046 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:49:11,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:11 BoogieIcfgContainer [2024-11-18 23:49:11,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:49:11,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:49:11,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:49:11,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:49:11,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:49:09" (1/3) ... [2024-11-18 23:49:11,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7bc261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:49:11, skipping insertion in model container [2024-11-18 23:49:11,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:09" (2/3) ... [2024-11-18 23:49:11,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7bc261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:49:11, skipping insertion in model container [2024-11-18 23:49:11,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:11" (3/3) ... [2024-11-18 23:49:11,058 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-94.i [2024-11-18 23:49:11,074 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:49:11,075 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:49:11,142 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:49:11,148 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;@393eda93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:49:11,148 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:49:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 150 states have (on average 1.5133333333333334) internal successors, (227), 151 states have internal predecessors, (227), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:49:11,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-18 23:49:11,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:11,171 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:11,172 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:11,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:11,178 INFO L85 PathProgramCache]: Analyzing trace with hash -790835206, now seen corresponding path program 1 times [2024-11-18 23:49:11,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:11,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726029231] [2024-11-18 23:49:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:11,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:11,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2024-11-18 23:49:11,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:11,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726029231] [2024-11-18 23:49:11,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726029231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:11,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800023822] [2024-11-18 23:49:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:11,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:11,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:11,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:49:11,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:49:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:12,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:49:12,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2024-11-18 23:49:12,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:49:12,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800023822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:12,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:49:12,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:49:12,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021615749] [2024-11-18 23:49:12,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:12,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:49:12,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:12,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:49:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:49:12,133 INFO L87 Difference]: Start difference. First operand has 192 states, 150 states have (on average 1.5133333333333334) internal successors, (227), 151 states have internal predecessors, (227), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-18 23:49:12,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:12,184 INFO L93 Difference]: Finished difference Result 377 states and 643 transitions. [2024-11-18 23:49:12,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:49:12,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) Word has length 275 [2024-11-18 23:49:12,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:12,194 INFO L225 Difference]: With dead ends: 377 [2024-11-18 23:49:12,194 INFO L226 Difference]: Without dead ends: 188 [2024-11-18 23:49:12,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:49:12,203 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:12,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:49:12,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-18 23:49:12,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-18 23:49:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 147 states have (on average 1.4965986394557824) internal successors, (220), 147 states have internal predecessors, (220), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-18 23:49:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 298 transitions. [2024-11-18 23:49:12,264 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 298 transitions. Word has length 275 [2024-11-18 23:49:12,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:12,264 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 298 transitions. [2024-11-18 23:49:12,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-18 23:49:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 298 transitions. [2024-11-18 23:49:12,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-11-18 23:49:12,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:12,271 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:12,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:49:12,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:49:12,472 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:12,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:12,473 INFO L85 PathProgramCache]: Analyzing trace with hash 544752940, now seen corresponding path program 1 times [2024-11-18 23:49:12,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:12,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174857308] [2024-11-18 23:49:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:12,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:13,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:13,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174857308] [2024-11-18 23:49:13,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174857308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:13,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:13,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:49:13,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142350304] [2024-11-18 23:49:13,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:13,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:49:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:13,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:49:13,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:49:13,709 INFO L87 Difference]: Start difference. First operand 188 states and 298 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:14,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:14,965 INFO L93 Difference]: Finished difference Result 845 states and 1337 transitions. [2024-11-18 23:49:14,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:49:14,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 275 [2024-11-18 23:49:14,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:14,975 INFO L225 Difference]: With dead ends: 845 [2024-11-18 23:49:14,979 INFO L226 Difference]: Without dead ends: 660 [2024-11-18 23:49:14,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:49:14,984 INFO L432 NwaCegarLoop]: 333 mSDtfsCounter, 855 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:14,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 2105 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 23:49:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-18 23:49:15,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 452. [2024-11-18 23:49:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 371 states have (on average 1.522911051212938) internal successors, (565), 371 states have internal predecessors, (565), 78 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-18 23:49:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 721 transitions. [2024-11-18 23:49:15,085 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 721 transitions. Word has length 275 [2024-11-18 23:49:15,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:15,088 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 721 transitions. [2024-11-18 23:49:15,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 721 transitions. [2024-11-18 23:49:15,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-18 23:49:15,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:15,095 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:15,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:49:15,096 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:15,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2049385727, now seen corresponding path program 1 times [2024-11-18 23:49:15,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:15,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755387075] [2024-11-18 23:49:15,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:15,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:15,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:15,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755387075] [2024-11-18 23:49:15,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755387075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:15,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:15,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:49:15,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921173689] [2024-11-18 23:49:15,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:15,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:49:15,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:15,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:49:15,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:49:15,424 INFO L87 Difference]: Start difference. First operand 452 states and 721 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:15,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:15,904 INFO L93 Difference]: Finished difference Result 1883 states and 2984 transitions. [2024-11-18 23:49:15,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:49:15,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 276 [2024-11-18 23:49:15,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:15,919 INFO L225 Difference]: With dead ends: 1883 [2024-11-18 23:49:15,921 INFO L226 Difference]: Without dead ends: 1434 [2024-11-18 23:49:15,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:49:15,924 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 929 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:15,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1303 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:49:15,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2024-11-18 23:49:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1140. [2024-11-18 23:49:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 921 states have (on average 1.49185667752443) internal successors, (1374), 924 states have internal predecessors, (1374), 210 states have call successors, (210), 8 states have call predecessors, (210), 8 states have return successors, (210), 207 states have call predecessors, (210), 210 states have call successors, (210) [2024-11-18 23:49:16,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1794 transitions. [2024-11-18 23:49:16,027 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1794 transitions. Word has length 276 [2024-11-18 23:49:16,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:16,029 INFO L471 AbstractCegarLoop]: Abstraction has 1140 states and 1794 transitions. [2024-11-18 23:49:16,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:16,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1794 transitions. [2024-11-18 23:49:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-18 23:49:16,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:16,035 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:16,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:49:16,035 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:16,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1623424822, now seen corresponding path program 1 times [2024-11-18 23:49:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330730572] [2024-11-18 23:49:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:16,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:16,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:16,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330730572] [2024-11-18 23:49:16,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330730572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:16,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:16,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 23:49:16,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885735731] [2024-11-18 23:49:16,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:16,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:49:16,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:16,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:49:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:49:16,962 INFO L87 Difference]: Start difference. First operand 1140 states and 1794 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:18,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:18,052 INFO L93 Difference]: Finished difference Result 3893 states and 6120 transitions. [2024-11-18 23:49:18,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 23:49:18,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 276 [2024-11-18 23:49:18,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:18,071 INFO L225 Difference]: With dead ends: 3893 [2024-11-18 23:49:18,071 INFO L226 Difference]: Without dead ends: 3442 [2024-11-18 23:49:18,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2024-11-18 23:49:18,075 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 2220 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:18,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2220 Valid, 2769 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:49:18,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2024-11-18 23:49:18,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 3043. [2024-11-18 23:49:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 2548 states have (on average 1.5051020408163265) internal successors, (3835), 2558 states have internal predecessors, (3835), 471 states have call successors, (471), 23 states have call predecessors, (471), 23 states have return successors, (471), 461 states have call predecessors, (471), 471 states have call successors, (471) [2024-11-18 23:49:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 4777 transitions. [2024-11-18 23:49:18,274 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 4777 transitions. Word has length 276 [2024-11-18 23:49:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:18,316 INFO L471 AbstractCegarLoop]: Abstraction has 3043 states and 4777 transitions. [2024-11-18 23:49:18,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 4777 transitions. [2024-11-18 23:49:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-18 23:49:18,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:18,322 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:18,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:49:18,323 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:18,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:18,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1763973432, now seen corresponding path program 1 times [2024-11-18 23:49:18,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:18,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879838836] [2024-11-18 23:49:18,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:18,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:20,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:20,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:20,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879838836] [2024-11-18 23:49:20,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879838836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:20,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:20,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 23:49:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887897664] [2024-11-18 23:49:20,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:20,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 23:49:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 23:49:20,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:49:20,563 INFO L87 Difference]: Start difference. First operand 3043 states and 4777 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-18 23:49:26,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:26,996 INFO L93 Difference]: Finished difference Result 14324 states and 21893 transitions. [2024-11-18 23:49:26,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-18 23:49:26,998 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 276 [2024-11-18 23:49:26,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:27,056 INFO L225 Difference]: With dead ends: 14324 [2024-11-18 23:49:27,056 INFO L226 Difference]: Without dead ends: 11672 [2024-11-18 23:49:27,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=717, Invalid=2253, Unknown=0, NotChecked=0, Total=2970 [2024-11-18 23:49:27,068 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 3864 mSDsluCounter, 3863 mSDsCounter, 0 mSdLazyCounter, 3309 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3864 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 3827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 3309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:27,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3864 Valid, 4296 Invalid, 3827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 3309 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-18 23:49:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11672 states. [2024-11-18 23:49:27,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11672 to 5714. [2024-11-18 23:49:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5714 states, 4722 states have (on average 1.481152054214316) internal successors, (6994), 4764 states have internal predecessors, (6994), 923 states have call successors, (923), 68 states have call predecessors, (923), 68 states have return successors, (923), 881 states have call predecessors, (923), 923 states have call successors, (923) [2024-11-18 23:49:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 8840 transitions. [2024-11-18 23:49:27,673 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 8840 transitions. Word has length 276 [2024-11-18 23:49:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:27,676 INFO L471 AbstractCegarLoop]: Abstraction has 5714 states and 8840 transitions. [2024-11-18 23:49:27,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-18 23:49:27,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 8840 transitions. [2024-11-18 23:49:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-18 23:49:27,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:27,683 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:27,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:49:27,684 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:27,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:27,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1199860035, now seen corresponding path program 1 times [2024-11-18 23:49:27,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:27,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604249912] [2024-11-18 23:49:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:27,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:28,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604249912] [2024-11-18 23:49:28,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604249912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:28,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:28,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:49:28,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540374233] [2024-11-18 23:49:28,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:28,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:49:28,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:28,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:49:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:49:28,007 INFO L87 Difference]: Start difference. First operand 5714 states and 8840 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:28,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:28,468 INFO L93 Difference]: Finished difference Result 11940 states and 18488 transitions. [2024-11-18 23:49:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:49:28,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 276 [2024-11-18 23:49:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:28,505 INFO L225 Difference]: With dead ends: 11940 [2024-11-18 23:49:28,505 INFO L226 Difference]: Without dead ends: 6303 [2024-11-18 23:49:28,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:49:28,520 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 233 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:28,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1082 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:49:28,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2024-11-18 23:49:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 5714. [2024-11-18 23:49:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5714 states, 4722 states have (on average 1.4809402795425668) internal successors, (6993), 4764 states have internal predecessors, (6993), 923 states have call successors, (923), 68 states have call predecessors, (923), 68 states have return successors, (923), 881 states have call predecessors, (923), 923 states have call successors, (923) [2024-11-18 23:49:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 8839 transitions. [2024-11-18 23:49:28,961 INFO L78 Accepts]: Start accepts. Automaton has 5714 states and 8839 transitions. Word has length 276 [2024-11-18 23:49:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:28,961 INFO L471 AbstractCegarLoop]: Abstraction has 5714 states and 8839 transitions. [2024-11-18 23:49:28,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5714 states and 8839 transitions. [2024-11-18 23:49:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 23:49:28,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:28,968 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:28,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:49:28,968 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:28,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:28,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1458844747, now seen corresponding path program 1 times [2024-11-18 23:49:28,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:28,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674573742] [2024-11-18 23:49:28,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:28,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:29,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:29,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674573742] [2024-11-18 23:49:29,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674573742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:29,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:29,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:49:29,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364095205] [2024-11-18 23:49:29,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:29,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:49:29,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:29,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:49:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:49:29,212 INFO L87 Difference]: Start difference. First operand 5714 states and 8839 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:29,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:29,754 INFO L93 Difference]: Finished difference Result 11940 states and 18487 transitions. [2024-11-18 23:49:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:49:29,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 277 [2024-11-18 23:49:29,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:29,788 INFO L225 Difference]: With dead ends: 11940 [2024-11-18 23:49:29,789 INFO L226 Difference]: Without dead ends: 6303 [2024-11-18 23:49:29,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:49:29,808 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 319 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:29,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1012 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:49:29,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2024-11-18 23:49:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 6221. [2024-11-18 23:49:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 5229 states have (on average 1.480780263912794) internal successors, (7743), 5271 states have internal predecessors, (7743), 923 states have call successors, (923), 68 states have call predecessors, (923), 68 states have return successors, (923), 881 states have call predecessors, (923), 923 states have call successors, (923) [2024-11-18 23:49:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9589 transitions. [2024-11-18 23:49:30,286 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9589 transitions. Word has length 277 [2024-11-18 23:49:30,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:30,287 INFO L471 AbstractCegarLoop]: Abstraction has 6221 states and 9589 transitions. [2024-11-18 23:49:30,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9589 transitions. [2024-11-18 23:49:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 23:49:30,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:30,295 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:30,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:49:30,296 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:30,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:30,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1014944073, now seen corresponding path program 1 times [2024-11-18 23:49:30,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:30,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189232408] [2024-11-18 23:49:30,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:30,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:30,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:30,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189232408] [2024-11-18 23:49:30,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189232408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:30,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:30,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:49:30,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912923087] [2024-11-18 23:49:30,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:30,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:49:30,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:30,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:49:30,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:49:30,815 INFO L87 Difference]: Start difference. First operand 6221 states and 9589 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:31,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:31,889 INFO L93 Difference]: Finished difference Result 21773 states and 33556 transitions. [2024-11-18 23:49:31,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:49:31,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 277 [2024-11-18 23:49:31,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:31,941 INFO L225 Difference]: With dead ends: 21773 [2024-11-18 23:49:31,942 INFO L226 Difference]: Without dead ends: 15658 [2024-11-18 23:49:31,962 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 23:49:31,962 INFO L432 NwaCegarLoop]: 570 mSDtfsCounter, 460 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:31,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1499 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:49:31,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15658 states. [2024-11-18 23:49:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15658 to 10008. [2024-11-18 23:49:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10008 states, 8422 states have (on average 1.4824269769650915) internal successors, (12485), 8504 states have internal predecessors, (12485), 1473 states have call successors, (1473), 112 states have call predecessors, (1473), 112 states have return successors, (1473), 1391 states have call predecessors, (1473), 1473 states have call successors, (1473) [2024-11-18 23:49:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10008 states to 10008 states and 15431 transitions. [2024-11-18 23:49:32,734 INFO L78 Accepts]: Start accepts. Automaton has 10008 states and 15431 transitions. Word has length 277 [2024-11-18 23:49:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:32,736 INFO L471 AbstractCegarLoop]: Abstraction has 10008 states and 15431 transitions. [2024-11-18 23:49:32,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand 10008 states and 15431 transitions. [2024-11-18 23:49:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 23:49:32,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:32,748 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:32,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:49:32,748 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:32,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2094187579, now seen corresponding path program 1 times [2024-11-18 23:49:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:32,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529794703] [2024-11-18 23:49:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:32,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:36,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:36,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529794703] [2024-11-18 23:49:36,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529794703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:36,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:36,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:49:36,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129800770] [2024-11-18 23:49:36,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:36,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:49:36,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:49:36,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:49:36,598 INFO L87 Difference]: Start difference. First operand 10008 states and 15431 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:40,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:40,597 INFO L93 Difference]: Finished difference Result 40583 states and 61772 transitions. [2024-11-18 23:49:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:49:40,598 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 277 [2024-11-18 23:49:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:40,691 INFO L225 Difference]: With dead ends: 40583 [2024-11-18 23:49:40,691 INFO L226 Difference]: Without dead ends: 36471 [2024-11-18 23:49:40,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:49:40,711 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 1767 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:40,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 1734 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 23:49:40,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36471 states. [2024-11-18 23:49:41,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36471 to 18476. [2024-11-18 23:49:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18476 states, 16460 states have (on average 1.5071688942891859) internal successors, (24808), 16628 states have internal predecessors, (24808), 1817 states have call successors, (1817), 198 states have call predecessors, (1817), 198 states have return successors, (1817), 1649 states have call predecessors, (1817), 1817 states have call successors, (1817) [2024-11-18 23:49:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18476 states to 18476 states and 28442 transitions. [2024-11-18 23:49:41,991 INFO L78 Accepts]: Start accepts. Automaton has 18476 states and 28442 transitions. Word has length 277 [2024-11-18 23:49:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:41,992 INFO L471 AbstractCegarLoop]: Abstraction has 18476 states and 28442 transitions. [2024-11-18 23:49:41,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 18476 states and 28442 transitions. [2024-11-18 23:49:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 23:49:42,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:42,001 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:42,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:49:42,001 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:42,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:42,002 INFO L85 PathProgramCache]: Analyzing trace with hash 288749245, now seen corresponding path program 1 times [2024-11-18 23:49:42,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:42,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007645531] [2024-11-18 23:49:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:42,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:43,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:43,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007645531] [2024-11-18 23:49:43,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007645531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:43,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:43,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:49:43,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744893999] [2024-11-18 23:49:43,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:43,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:49:43,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:43,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:49:43,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:49:43,967 INFO L87 Difference]: Start difference. First operand 18476 states and 28442 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:47,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:47,268 INFO L93 Difference]: Finished difference Result 33085 states and 50700 transitions. [2024-11-18 23:49:47,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 23:49:47,269 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 277 [2024-11-18 23:49:47,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:47,333 INFO L225 Difference]: With dead ends: 33085 [2024-11-18 23:49:47,334 INFO L226 Difference]: Without dead ends: 25119 [2024-11-18 23:49:47,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2024-11-18 23:49:47,361 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 2145 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:47,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 1837 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 23:49:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25119 states. [2024-11-18 23:49:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25119 to 19787. [2024-11-18 23:49:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19787 states, 17770 states have (on average 1.5090039392234103) internal successors, (26815), 17938 states have internal predecessors, (26815), 1817 states have call successors, (1817), 199 states have call predecessors, (1817), 199 states have return successors, (1817), 1649 states have call predecessors, (1817), 1817 states have call successors, (1817) [2024-11-18 23:49:48,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19787 states to 19787 states and 30449 transitions. [2024-11-18 23:49:49,009 INFO L78 Accepts]: Start accepts. Automaton has 19787 states and 30449 transitions. Word has length 277 [2024-11-18 23:49:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:49,010 INFO L471 AbstractCegarLoop]: Abstraction has 19787 states and 30449 transitions. [2024-11-18 23:49:49,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:49,010 INFO L276 IsEmpty]: Start isEmpty. Operand 19787 states and 30449 transitions. [2024-11-18 23:49:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 23:49:49,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:49,022 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:49,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 23:49:49,022 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:49,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:49,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1346099202, now seen corresponding path program 1 times [2024-11-18 23:49:49,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:49,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573810415] [2024-11-18 23:49:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:49,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:49,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:49,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573810415] [2024-11-18 23:49:49,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573810415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:49,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:49,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:49:49,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739355369] [2024-11-18 23:49:49,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:49,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:49:49,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:49:49,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:49:49,903 INFO L87 Difference]: Start difference. First operand 19787 states and 30449 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:52,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:52,813 INFO L93 Difference]: Finished difference Result 41946 states and 64182 transitions. [2024-11-18 23:49:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 23:49:52,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 277 [2024-11-18 23:49:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:52,902 INFO L225 Difference]: With dead ends: 41946 [2024-11-18 23:49:52,902 INFO L226 Difference]: Without dead ends: 34402 [2024-11-18 23:49:52,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:49:52,939 INFO L432 NwaCegarLoop]: 699 mSDtfsCounter, 1904 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:52,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 2713 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:49:52,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34402 states. [2024-11-18 23:49:54,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34402 to 21601. [2024-11-18 23:49:54,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21601 states, 19141 states have (on average 1.5008620239276944) internal successors, (28728), 19323 states have internal predecessors, (28728), 2224 states have call successors, (2224), 235 states have call predecessors, (2224), 235 states have return successors, (2224), 2042 states have call predecessors, (2224), 2224 states have call successors, (2224) [2024-11-18 23:49:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21601 states to 21601 states and 33176 transitions. [2024-11-18 23:49:54,470 INFO L78 Accepts]: Start accepts. Automaton has 21601 states and 33176 transitions. Word has length 277 [2024-11-18 23:49:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:54,470 INFO L471 AbstractCegarLoop]: Abstraction has 21601 states and 33176 transitions. [2024-11-18 23:49:54,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:54,471 INFO L276 IsEmpty]: Start isEmpty. Operand 21601 states and 33176 transitions. [2024-11-18 23:49:54,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 23:49:54,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:54,482 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:49:54,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:49:54,482 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:54,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:54,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1145945068, now seen corresponding path program 1 times [2024-11-18 23:49:54,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:54,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531914957] [2024-11-18 23:49:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:54,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:49:55,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:55,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531914957] [2024-11-18 23:49:55,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531914957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:55,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:55,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 23:49:55,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219798343] [2024-11-18 23:49:55,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:55,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:49:55,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:49:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:49:55,341 INFO L87 Difference]: Start difference. First operand 21601 states and 33176 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:49:58,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:58,233 INFO L93 Difference]: Finished difference Result 37483 states and 57216 transitions. [2024-11-18 23:49:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 23:49:58,235 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 277 [2024-11-18 23:49:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:58,308 INFO L225 Difference]: With dead ends: 37483 [2024-11-18 23:49:58,309 INFO L226 Difference]: Without dead ends: 29371 [2024-11-18 23:49:58,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2024-11-18 23:49:58,336 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 2730 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2730 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:58,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2730 Valid, 2526 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 23:49:58,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29371 states. [2024-11-18 23:50:00,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29371 to 22289. [2024-11-18 23:50:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22289 states, 19760 states have (on average 1.4986336032388663) internal successors, (29613), 19948 states have internal predecessors, (29613), 2278 states have call successors, (2278), 250 states have call predecessors, (2278), 250 states have return successors, (2278), 2090 states have call predecessors, (2278), 2278 states have call successors, (2278) [2024-11-18 23:50:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22289 states to 22289 states and 34169 transitions. [2024-11-18 23:50:00,489 INFO L78 Accepts]: Start accepts. Automaton has 22289 states and 34169 transitions. Word has length 277 [2024-11-18 23:50:00,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:50:00,489 INFO L471 AbstractCegarLoop]: Abstraction has 22289 states and 34169 transitions. [2024-11-18 23:50:00,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:50:00,489 INFO L276 IsEmpty]: Start isEmpty. Operand 22289 states and 34169 transitions. [2024-11-18 23:50:00,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 23:50:00,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:50:00,499 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:50:00,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 23:50:00,499 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:50:00,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:50:00,499 INFO L85 PathProgramCache]: Analyzing trace with hash -659493266, now seen corresponding path program 1 times [2024-11-18 23:50:00,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:50:00,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247108552] [2024-11-18 23:50:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:00,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:50:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:50:01,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:50:01,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247108552] [2024-11-18 23:50:01,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247108552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:50:01,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:50:01,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 23:50:01,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482501467] [2024-11-18 23:50:01,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:50:01,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:50:01,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:50:01,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:50:01,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:50:01,234 INFO L87 Difference]: Start difference. First operand 22289 states and 34169 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 2 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-18 23:50:03,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:50:03,793 INFO L93 Difference]: Finished difference Result 32578 states and 49568 transitions. [2024-11-18 23:50:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 23:50:03,794 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 2 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 277 [2024-11-18 23:50:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:50:03,852 INFO L225 Difference]: With dead ends: 32578 [2024-11-18 23:50:03,852 INFO L226 Difference]: Without dead ends: 24405 [2024-11-18 23:50:03,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2024-11-18 23:50:03,878 INFO L432 NwaCegarLoop]: 407 mSDtfsCounter, 1370 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:50:03,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 3346 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 23:50:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24405 states. [2024-11-18 23:50:05,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24405 to 22972. [2024-11-18 23:50:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22972 states, 20408 states have (on average 1.4962759702077617) internal successors, (30536), 20605 states have internal predecessors, (30536), 2305 states have call successors, (2305), 258 states have call predecessors, (2305), 258 states have return successors, (2305), 2108 states have call predecessors, (2305), 2305 states have call successors, (2305) [2024-11-18 23:50:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22972 states to 22972 states and 35146 transitions. [2024-11-18 23:50:05,366 INFO L78 Accepts]: Start accepts. Automaton has 22972 states and 35146 transitions. Word has length 277 [2024-11-18 23:50:05,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:50:05,367 INFO L471 AbstractCegarLoop]: Abstraction has 22972 states and 35146 transitions. [2024-11-18 23:50:05,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 2 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2024-11-18 23:50:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand 22972 states and 35146 transitions. [2024-11-18 23:50:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 23:50:05,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:50:05,376 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:50:05,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 23:50:05,377 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:50:05,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:50:05,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1090521271, now seen corresponding path program 1 times [2024-11-18 23:50:05,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:50:05,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126133812] [2024-11-18 23:50:05,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:05,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:50:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:05,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:50:05,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:50:05,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126133812] [2024-11-18 23:50:05,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126133812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:50:05,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:50:05,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:50:05,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944411045] [2024-11-18 23:50:05,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:50:05,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:50:05,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:50:05,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:50:05,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:50:05,551 INFO L87 Difference]: Start difference. First operand 22972 states and 35146 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:50:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:50:07,853 INFO L93 Difference]: Finished difference Result 55386 states and 85008 transitions. [2024-11-18 23:50:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:50:07,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 277 [2024-11-18 23:50:07,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:50:07,954 INFO L225 Difference]: With dead ends: 55386 [2024-11-18 23:50:07,954 INFO L226 Difference]: Without dead ends: 45030 [2024-11-18 23:50:07,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:50:07,981 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 201 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:50:07,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 720 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:50:08,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45030 states. [2024-11-18 23:50:09,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45030 to 30702. [2024-11-18 23:50:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30702 states, 27727 states have (on average 1.5124968442312547) internal successors, (41937), 27968 states have internal predecessors, (41937), 2669 states have call successors, (2669), 305 states have call predecessors, (2669), 305 states have return successors, (2669), 2428 states have call predecessors, (2669), 2669 states have call successors, (2669) [2024-11-18 23:50:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30702 states to 30702 states and 47275 transitions. [2024-11-18 23:50:09,840 INFO L78 Accepts]: Start accepts. Automaton has 30702 states and 47275 transitions. Word has length 277 [2024-11-18 23:50:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:50:09,841 INFO L471 AbstractCegarLoop]: Abstraction has 30702 states and 47275 transitions. [2024-11-18 23:50:09,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:50:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 30702 states and 47275 transitions. [2024-11-18 23:50:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 23:50:09,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:50:09,850 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:50:09,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 23:50:09,850 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:50:09,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:50:09,851 INFO L85 PathProgramCache]: Analyzing trace with hash 468364524, now seen corresponding path program 1 times [2024-11-18 23:50:09,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:50:09,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527034582] [2024-11-18 23:50:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:09,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:50:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:50:10,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:50:10,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527034582] [2024-11-18 23:50:10,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527034582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:50:10,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:50:10,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:50:10,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690725383] [2024-11-18 23:50:10,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:50:10,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:50:10,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:50:10,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:50:10,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:50:10,361 INFO L87 Difference]: Start difference. First operand 30702 states and 47275 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:50:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:50:13,253 INFO L93 Difference]: Finished difference Result 53185 states and 82085 transitions. [2024-11-18 23:50:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:50:13,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 277 [2024-11-18 23:50:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:50:13,355 INFO L225 Difference]: With dead ends: 53185 [2024-11-18 23:50:13,355 INFO L226 Difference]: Without dead ends: 48990 [2024-11-18 23:50:13,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:50:13,377 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 787 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:50:13,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 2185 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:50:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48990 states. [2024-11-18 23:50:15,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48990 to 32556. [2024-11-18 23:50:15,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32556 states, 29581 states have (on average 1.5174605320983063) internal successors, (44888), 29822 states have internal predecessors, (44888), 2669 states have call successors, (2669), 305 states have call predecessors, (2669), 305 states have return successors, (2669), 2428 states have call predecessors, (2669), 2669 states have call successors, (2669) [2024-11-18 23:50:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32556 states to 32556 states and 50226 transitions. [2024-11-18 23:50:15,445 INFO L78 Accepts]: Start accepts. Automaton has 32556 states and 50226 transitions. Word has length 277 [2024-11-18 23:50:15,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:50:15,446 INFO L471 AbstractCegarLoop]: Abstraction has 32556 states and 50226 transitions. [2024-11-18 23:50:15,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2024-11-18 23:50:15,446 INFO L276 IsEmpty]: Start isEmpty. Operand 32556 states and 50226 transitions. [2024-11-18 23:50:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-18 23:50:15,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:50:15,458 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:50:15,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 23:50:15,458 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:50:15,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:50:15,459 INFO L85 PathProgramCache]: Analyzing trace with hash 608913134, now seen corresponding path program 1 times [2024-11-18 23:50:15,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:50:15,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111680076] [2024-11-18 23:50:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:15,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:50:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-11-18 23:50:17,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:50:17,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111680076] [2024-11-18 23:50:17,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111680076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:50:17,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:50:17,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 23:50:17,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205333305] [2024-11-18 23:50:17,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:50:17,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 23:50:17,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:50:17,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 23:50:17,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:50:17,021 INFO L87 Difference]: Start difference. First operand 32556 states and 50226 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 14 states have internal predecessors, (85), 2 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39)