./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-86.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-86.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 b22327eee78d50d1e1892e34431f5123d0f1cfe06d349ebd74106592553c44aa --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 12:05:59,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 12:05:59,906 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 12:05:59,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 12:05:59,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 12:05:59,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 12:05:59,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 12:05:59,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 12:05:59,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 12:05:59,939 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 12:05:59,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 12:05:59,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 12:05:59,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 12:05:59,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 12:05:59,943 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 12:05:59,943 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 12:05:59,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 12:05:59,944 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 12:05:59,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 12:05:59,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 12:05:59,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 12:05:59,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 12:05:59,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 12:05:59,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 12:05:59,946 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 12:05:59,946 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 12:05:59,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 12:05:59,947 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 12:05:59,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 12:05:59,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 12:05:59,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 12:05:59,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 12:05:59,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:05:59,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 12:05:59,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 12:05:59,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 12:05:59,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 12:05:59,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 12:05:59,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 12:05:59,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 12:05:59,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 12:05:59,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 12:05:59,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b22327eee78d50d1e1892e34431f5123d0f1cfe06d349ebd74106592553c44aa [2024-11-22 12:06:00,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 12:06:00,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 12:06:00,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 12:06:00,190 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 12:06:00,190 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 12:06:00,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-86.i [2024-11-22 12:06:01,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 12:06:01,618 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 12:06:01,619 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-86.i [2024-11-22 12:06:01,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a4ca4b7/924bda715867446d8e908c27e0db637d/FLAGaa7afb22b [2024-11-22 12:06:01,643 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6a4ca4b7/924bda715867446d8e908c27e0db637d [2024-11-22 12:06:01,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 12:06:01,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 12:06:01,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 12:06:01,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 12:06:01,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 12:06:01,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:06:01" (1/1) ... [2024-11-22 12:06:01,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f375108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:01, skipping insertion in model container [2024-11-22 12:06:01,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:06:01" (1/1) ... [2024-11-22 12:06:01,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 12:06:01,896 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_amount500_file-86.i[916,929] [2024-11-22 12:06:02,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:06:02,079 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 12:06:02,088 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_amount500_file-86.i[916,929] [2024-11-22 12:06:02,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:06:02,202 INFO L204 MainTranslator]: Completed translation [2024-11-22 12:06:02,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02 WrapperNode [2024-11-22 12:06:02,203 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 12:06:02,204 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 12:06:02,204 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 12:06:02,204 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 12:06:02,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,233 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,301 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 714 [2024-11-22 12:06:02,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 12:06:02,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 12:06:02,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 12:06:02,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 12:06:02,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,410 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]. [2024-11-22 12:06:02,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,468 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 12:06:02,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 12:06:02,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 12:06:02,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 12:06:02,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (1/1) ... [2024-11-22 12:06:02,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:06:02,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:06:02,519 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) [2024-11-22 12:06:02,521 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 [2024-11-22 12:06:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 12:06:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 12:06:02,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 12:06:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 12:06:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 12:06:02,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 12:06:02,671 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 12:06:02,673 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 12:06:03,553 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-22 12:06:03,554 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 12:06:03,572 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 12:06:03,574 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 12:06:03,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:06:03 BoogieIcfgContainer [2024-11-22 12:06:03,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 12:06:03,575 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 12:06:03,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 12:06:03,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 12:06:03,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:06:01" (1/3) ... [2024-11-22 12:06:03,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8be2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:06:03, skipping insertion in model container [2024-11-22 12:06:03,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:02" (2/3) ... [2024-11-22 12:06:03,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8be2a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:06:03, skipping insertion in model container [2024-11-22 12:06:03,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:06:03" (3/3) ... [2024-11-22 12:06:03,583 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-86.i [2024-11-22 12:06:03,595 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 12:06:03,595 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 12:06:03,657 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 12:06:03,663 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;@267aa8f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 12:06:03,663 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 12:06:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 285 states, 215 states have (on average 1.558139534883721) internal successors, (335), 216 states have internal predecessors, (335), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-22 12:06:03,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-22 12:06:03,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:03,694 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:03,695 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:03,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2066372841, now seen corresponding path program 1 times [2024-11-22 12:06:03,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:03,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861145752] [2024-11-22 12:06:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:03,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-22 12:06:04,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:04,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861145752] [2024-11-22 12:06:04,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861145752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:06:04,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379999662] [2024-11-22 12:06:04,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:04,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:04,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:06:04,247 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) [2024-11-22 12:06:04,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 12:06:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:04,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 12:06:04,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:06:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-11-22 12:06:04,590 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:06:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379999662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:04,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:06:04,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 12:06:04,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746952481] [2024-11-22 12:06:04,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:04,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 12:06:04,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 12:06:04,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:06:04,619 INFO L87 Difference]: Start difference. First operand has 285 states, 215 states have (on average 1.558139534883721) internal successors, (335), 216 states have internal predecessors, (335), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-22 12:06:04,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:04,665 INFO L93 Difference]: Finished difference Result 563 states and 999 transitions. [2024-11-22 12:06:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 12:06:04,668 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 466 [2024-11-22 12:06:04,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:04,676 INFO L225 Difference]: With dead ends: 563 [2024-11-22 12:06:04,676 INFO L226 Difference]: Without dead ends: 281 [2024-11-22 12:06:04,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:06:04,697 INFO L432 NwaCegarLoop]: 458 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, 458 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 [2024-11-22 12:06:04,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:06:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-22 12:06:04,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2024-11-22 12:06:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 212 states have (on average 1.528301886792453) internal successors, (324), 212 states have internal predecessors, (324), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-22 12:06:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 458 transitions. [2024-11-22 12:06:04,765 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 458 transitions. Word has length 466 [2024-11-22 12:06:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:04,765 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 458 transitions. [2024-11-22 12:06:04,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-11-22 12:06:04,766 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 458 transitions. [2024-11-22 12:06:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:04,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:04,773 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:04,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 12:06:04,974 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 [2024-11-22 12:06:04,974 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:04,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1239008125, now seen corresponding path program 1 times [2024-11-22 12:06:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:04,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494363870] [2024-11-22 12:06:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:04,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:05,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494363870] [2024-11-22 12:06:05,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494363870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:05,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:05,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:06:05,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005522505] [2024-11-22 12:06:05,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:05,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:06:05,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:05,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:06:05,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:05,350 INFO L87 Difference]: Start difference. First operand 281 states and 458 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:05,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:05,467 INFO L93 Difference]: Finished difference Result 834 states and 1362 transitions. [2024-11-22 12:06:05,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:06:05,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:05,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:05,476 INFO L225 Difference]: With dead ends: 834 [2024-11-22 12:06:05,476 INFO L226 Difference]: Without dead ends: 556 [2024-11-22 12:06:05,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:05,479 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 448 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:05,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1100 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:06:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-11-22 12:06:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 554. [2024-11-22 12:06:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 417 states have (on average 1.5203836930455636) internal successors, (634), 417 states have internal predecessors, (634), 134 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-22 12:06:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 902 transitions. [2024-11-22 12:06:05,564 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 902 transitions. Word has length 468 [2024-11-22 12:06:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:05,566 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 902 transitions. [2024-11-22 12:06:05,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:05,567 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 902 transitions. [2024-11-22 12:06:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:05,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:05,574 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:05,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 12:06:05,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:05,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash -399974463, now seen corresponding path program 1 times [2024-11-22 12:06:05,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179248612] [2024-11-22 12:06:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:05,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:05,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:05,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179248612] [2024-11-22 12:06:05,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179248612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:05,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:05,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:06:05,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495777666] [2024-11-22 12:06:05,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:05,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:06:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:05,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:06:05,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:05,888 INFO L87 Difference]: Start difference. First operand 554 states and 902 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:06,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:06,002 INFO L93 Difference]: Finished difference Result 1620 states and 2634 transitions. [2024-11-22 12:06:06,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:06:06,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:06,011 INFO L225 Difference]: With dead ends: 1620 [2024-11-22 12:06:06,011 INFO L226 Difference]: Without dead ends: 1069 [2024-11-22 12:06:06,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:06,013 INFO L432 NwaCegarLoop]: 636 mSDtfsCounter, 400 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:06,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1070 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:06:06,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2024-11-22 12:06:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 697. [2024-11-22 12:06:06,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 560 states have (on average 1.5607142857142857) internal successors, (874), 560 states have internal predecessors, (874), 134 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-22 12:06:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1142 transitions. [2024-11-22 12:06:06,071 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1142 transitions. Word has length 468 [2024-11-22 12:06:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:06,072 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1142 transitions. [2024-11-22 12:06:06,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1142 transitions. [2024-11-22 12:06:06,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:06,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:06,080 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:06,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 12:06:06,080 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:06,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash -818627387, now seen corresponding path program 1 times [2024-11-22 12:06:06,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:06,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745452944] [2024-11-22 12:06:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:06,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:06,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745452944] [2024-11-22 12:06:06,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745452944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:06,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:06,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:06:06,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515419680] [2024-11-22 12:06:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:06,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:06:06,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:06:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:06,347 INFO L87 Difference]: Start difference. First operand 697 states and 1142 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:06,438 INFO L93 Difference]: Finished difference Result 2055 states and 3370 transitions. [2024-11-22 12:06:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:06:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:06,446 INFO L225 Difference]: With dead ends: 2055 [2024-11-22 12:06:06,446 INFO L226 Difference]: Without dead ends: 1361 [2024-11-22 12:06:06,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:06,449 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 410 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:06,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1204 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:06:06,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2024-11-22 12:06:06,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1359. [2024-11-22 12:06:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1086 states have (on average 1.5469613259668509) internal successors, (1680), 1086 states have internal predecessors, (1680), 268 states have call successors, (268), 4 states have call predecessors, (268), 4 states have return successors, (268), 268 states have call predecessors, (268), 268 states have call successors, (268) [2024-11-22 12:06:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 2216 transitions. [2024-11-22 12:06:06,524 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 2216 transitions. Word has length 468 [2024-11-22 12:06:06,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:06,525 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 2216 transitions. [2024-11-22 12:06:06,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:06,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 2216 transitions. [2024-11-22 12:06:06,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:06,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:06,530 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:06,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 12:06:06,531 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:06,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1311253561, now seen corresponding path program 1 times [2024-11-22 12:06:06,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:06,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829436262] [2024-11-22 12:06:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:07,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:07,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829436262] [2024-11-22 12:06:07,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829436262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:07,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:07,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:06:07,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894799552] [2024-11-22 12:06:07,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:07,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:06:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:06:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:06:07,145 INFO L87 Difference]: Start difference. First operand 1359 states and 2216 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:07,479 INFO L93 Difference]: Finished difference Result 3648 states and 5959 transitions. [2024-11-22 12:06:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:06:07,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:07,491 INFO L225 Difference]: With dead ends: 3648 [2024-11-22 12:06:07,491 INFO L226 Difference]: Without dead ends: 2292 [2024-11-22 12:06:07,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:06:07,495 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 327 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:07,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1331 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 12:06:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2024-11-22 12:06:07,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 1482. [2024-11-22 12:06:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1141 states have (on average 1.5267309377738825) internal successors, (1742), 1141 states have internal predecessors, (1742), 335 states have call successors, (335), 5 states have call predecessors, (335), 5 states have return successors, (335), 335 states have call predecessors, (335), 335 states have call successors, (335) [2024-11-22 12:06:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2412 transitions. [2024-11-22 12:06:07,608 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2412 transitions. Word has length 468 [2024-11-22 12:06:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:07,609 INFO L471 AbstractCegarLoop]: Abstraction has 1482 states and 2412 transitions. [2024-11-22 12:06:07,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2412 transitions. [2024-11-22 12:06:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:07,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:07,616 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:07,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 12:06:07,617 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:07,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:07,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2004759033, now seen corresponding path program 1 times [2024-11-22 12:06:07,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:07,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392576366] [2024-11-22 12:06:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:07,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392576366] [2024-11-22 12:06:08,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392576366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:08,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:08,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:06:08,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942467691] [2024-11-22 12:06:08,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:08,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:06:08,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:08,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:06:08,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:06:08,329 INFO L87 Difference]: Start difference. First operand 1482 states and 2412 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:08,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:08,551 INFO L93 Difference]: Finished difference Result 4216 states and 6831 transitions. [2024-11-22 12:06:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:06:08,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:08,564 INFO L225 Difference]: With dead ends: 4216 [2024-11-22 12:06:08,564 INFO L226 Difference]: Without dead ends: 2860 [2024-11-22 12:06:08,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:06:08,569 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 765 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:08,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1126 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:06:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2024-11-22 12:06:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2470. [2024-11-22 12:06:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2060 states have (on average 1.5631067961165048) internal successors, (3220), 2064 states have internal predecessors, (3220), 399 states have call successors, (399), 10 states have call predecessors, (399), 10 states have return successors, (399), 395 states have call predecessors, (399), 399 states have call successors, (399) [2024-11-22 12:06:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 4018 transitions. [2024-11-22 12:06:08,708 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 4018 transitions. Word has length 468 [2024-11-22 12:06:08,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:08,710 INFO L471 AbstractCegarLoop]: Abstraction has 2470 states and 4018 transitions. [2024-11-22 12:06:08,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:08,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 4018 transitions. [2024-11-22 12:06:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:08,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:08,720 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:08,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 12:06:08,720 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:08,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1872811657, now seen corresponding path program 1 times [2024-11-22 12:06:08,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:08,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733456893] [2024-11-22 12:06:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:08,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:11,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733456893] [2024-11-22 12:06:11,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733456893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:11,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:11,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:06:11,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836646977] [2024-11-22 12:06:11,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:11,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:06:11,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:11,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:06:11,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:06:11,025 INFO L87 Difference]: Start difference. First operand 2470 states and 4018 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:11,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:11,711 INFO L93 Difference]: Finished difference Result 6274 states and 10180 transitions. [2024-11-22 12:06:11,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:06:11,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:11,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:11,730 INFO L225 Difference]: With dead ends: 6274 [2024-11-22 12:06:11,730 INFO L226 Difference]: Without dead ends: 3936 [2024-11-22 12:06:11,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:06:11,738 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 647 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:11,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 862 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 12:06:11,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2024-11-22 12:06:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 2534. [2024-11-22 12:06:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2534 states, 2116 states have (on average 1.54820415879017) internal successors, (3276), 2120 states have internal predecessors, (3276), 399 states have call successors, (399), 18 states have call predecessors, (399), 18 states have return successors, (399), 395 states have call predecessors, (399), 399 states have call successors, (399) [2024-11-22 12:06:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4074 transitions. [2024-11-22 12:06:11,919 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 4074 transitions. Word has length 468 [2024-11-22 12:06:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:11,920 INFO L471 AbstractCegarLoop]: Abstraction has 2534 states and 4074 transitions. [2024-11-22 12:06:11,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 4074 transitions. [2024-11-22 12:06:11,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:11,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:11,926 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:11,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 12:06:11,927 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:11,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:11,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1861455861, now seen corresponding path program 1 times [2024-11-22 12:06:11,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:11,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299688345] [2024-11-22 12:06:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:11,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:13,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299688345] [2024-11-22 12:06:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299688345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:13,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:13,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:06:13,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786303789] [2024-11-22 12:06:13,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:13,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:06:13,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:13,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:06:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:06:13,312 INFO L87 Difference]: Start difference. First operand 2534 states and 4074 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:13,914 INFO L93 Difference]: Finished difference Result 7436 states and 11856 transitions. [2024-11-22 12:06:13,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:06:13,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:13,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:13,936 INFO L225 Difference]: With dead ends: 7436 [2024-11-22 12:06:13,937 INFO L226 Difference]: Without dead ends: 5034 [2024-11-22 12:06:13,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:06:13,945 INFO L432 NwaCegarLoop]: 610 mSDtfsCounter, 1451 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:13,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 1498 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 12:06:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5034 states. [2024-11-22 12:06:14,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5034 to 3200. [2024-11-22 12:06:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2782 states have (on average 1.5787203450754852) internal successors, (4392), 2786 states have internal predecessors, (4392), 399 states have call successors, (399), 18 states have call predecessors, (399), 18 states have return successors, (399), 395 states have call predecessors, (399), 399 states have call successors, (399) [2024-11-22 12:06:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5190 transitions. [2024-11-22 12:06:14,127 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5190 transitions. Word has length 468 [2024-11-22 12:06:14,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:14,127 INFO L471 AbstractCegarLoop]: Abstraction has 3200 states and 5190 transitions. [2024-11-22 12:06:14,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5190 transitions. [2024-11-22 12:06:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:14,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:14,133 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:14,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 12:06:14,133 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:14,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:14,134 INFO L85 PathProgramCache]: Analyzing trace with hash 384123593, now seen corresponding path program 1 times [2024-11-22 12:06:14,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:14,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693787206] [2024-11-22 12:06:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:14,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:15,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:15,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693787206] [2024-11-22 12:06:15,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693787206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:15,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:15,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:06:15,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814453931] [2024-11-22 12:06:15,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:15,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:06:15,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:15,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:06:15,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:06:15,143 INFO L87 Difference]: Start difference. First operand 3200 states and 5190 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:15,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:15,516 INFO L93 Difference]: Finished difference Result 10202 states and 16543 transitions. [2024-11-22 12:06:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:06:15,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:15,543 INFO L225 Difference]: With dead ends: 10202 [2024-11-22 12:06:15,547 INFO L226 Difference]: Without dead ends: 7134 [2024-11-22 12:06:15,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:06:15,555 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 795 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:15,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1161 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:06:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2024-11-22 12:06:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 6492. [2024-11-22 12:06:15,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6492 states, 5946 states have (on average 1.5980491086444668) internal successors, (9502), 5958 states have internal predecessors, (9502), 511 states have call successors, (511), 34 states have call predecessors, (511), 34 states have return successors, (511), 499 states have call predecessors, (511), 511 states have call successors, (511) [2024-11-22 12:06:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6492 states to 6492 states and 10524 transitions. [2024-11-22 12:06:15,804 INFO L78 Accepts]: Start accepts. Automaton has 6492 states and 10524 transitions. Word has length 468 [2024-11-22 12:06:15,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:15,804 INFO L471 AbstractCegarLoop]: Abstraction has 6492 states and 10524 transitions. [2024-11-22 12:06:15,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 6492 states and 10524 transitions. [2024-11-22 12:06:15,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:15,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:15,814 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:15,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 12:06:15,814 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:15,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash -695149815, now seen corresponding path program 1 times [2024-11-22 12:06:15,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:15,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453140640] [2024-11-22 12:06:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:15,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:16,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:16,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453140640] [2024-11-22 12:06:16,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453140640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:16,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:16,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:06:16,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865999596] [2024-11-22 12:06:16,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:16,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:06:16,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:16,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:06:16,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:06:16,767 INFO L87 Difference]: Start difference. First operand 6492 states and 10524 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:18,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:18,060 INFO L93 Difference]: Finished difference Result 20636 states and 33015 transitions. [2024-11-22 12:06:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 12:06:18,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:18,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:18,097 INFO L225 Difference]: With dead ends: 20636 [2024-11-22 12:06:18,097 INFO L226 Difference]: Without dead ends: 14276 [2024-11-22 12:06:18,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-11-22 12:06:18,110 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 2219 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 3674 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:18,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2219 Valid, 3674 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 12:06:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14276 states. [2024-11-22 12:06:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14276 to 7893. [2024-11-22 12:06:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7893 states, 7347 states have (on average 1.6052810671022186) internal successors, (11794), 7359 states have internal predecessors, (11794), 511 states have call successors, (511), 34 states have call predecessors, (511), 34 states have return successors, (511), 499 states have call predecessors, (511), 511 states have call successors, (511) [2024-11-22 12:06:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7893 states to 7893 states and 12816 transitions. [2024-11-22 12:06:18,454 INFO L78 Accepts]: Start accepts. Automaton has 7893 states and 12816 transitions. Word has length 468 [2024-11-22 12:06:18,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:18,454 INFO L471 AbstractCegarLoop]: Abstraction has 7893 states and 12816 transitions. [2024-11-22 12:06:18,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:18,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7893 states and 12816 transitions. [2024-11-22 12:06:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:18,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:18,467 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:18,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 12:06:18,468 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:18,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash -668084213, now seen corresponding path program 1 times [2024-11-22 12:06:18,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:18,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425752503] [2024-11-22 12:06:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:18,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:18,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425752503] [2024-11-22 12:06:18,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425752503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:18,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:18,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:06:18,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912715083] [2024-11-22 12:06:18,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:18,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:06:18,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:06:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:18,654 INFO L87 Difference]: Start difference. First operand 7893 states and 12816 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:19,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:19,024 INFO L93 Difference]: Finished difference Result 22598 states and 36678 transitions. [2024-11-22 12:06:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:06:19,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:19,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:19,061 INFO L225 Difference]: With dead ends: 22598 [2024-11-22 12:06:19,061 INFO L226 Difference]: Without dead ends: 14837 [2024-11-22 12:06:19,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:19,078 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 429 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:19,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1109 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:06:19,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14837 states. [2024-11-22 12:06:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14837 to 8429. [2024-11-22 12:06:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8429 states, 7883 states have (on average 1.567043003932513) internal successors, (12353), 7895 states have internal predecessors, (12353), 511 states have call successors, (511), 34 states have call predecessors, (511), 34 states have return successors, (511), 499 states have call predecessors, (511), 511 states have call successors, (511) [2024-11-22 12:06:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8429 states to 8429 states and 13375 transitions. [2024-11-22 12:06:19,541 INFO L78 Accepts]: Start accepts. Automaton has 8429 states and 13375 transitions. Word has length 468 [2024-11-22 12:06:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:19,542 INFO L471 AbstractCegarLoop]: Abstraction has 8429 states and 13375 transitions. [2024-11-22 12:06:19,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 8429 states and 13375 transitions. [2024-11-22 12:06:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:19,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:19,557 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:19,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 12:06:19,557 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:19,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1708979787, now seen corresponding path program 1 times [2024-11-22 12:06:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:19,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906524148] [2024-11-22 12:06:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:19,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:19,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906524148] [2024-11-22 12:06:19,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906524148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:19,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:19,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:06:19,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592401380] [2024-11-22 12:06:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:19,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:06:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:19,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:06:19,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:19,802 INFO L87 Difference]: Start difference. First operand 8429 states and 13375 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:20,114 INFO L93 Difference]: Finished difference Result 19169 states and 30400 transitions. [2024-11-22 12:06:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:06:20,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:20,136 INFO L225 Difference]: With dead ends: 19169 [2024-11-22 12:06:20,136 INFO L226 Difference]: Without dead ends: 10872 [2024-11-22 12:06:20,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:20,150 INFO L432 NwaCegarLoop]: 546 mSDtfsCounter, 238 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:20,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 977 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:06:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10872 states. [2024-11-22 12:06:20,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10872 to 10286. [2024-11-22 12:06:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10286 states, 9739 states have (on average 1.5768559400349111) internal successors, (15357), 9751 states have internal predecessors, (15357), 511 states have call successors, (511), 35 states have call predecessors, (511), 35 states have return successors, (511), 499 states have call predecessors, (511), 511 states have call successors, (511) [2024-11-22 12:06:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10286 states to 10286 states and 16379 transitions. [2024-11-22 12:06:20,456 INFO L78 Accepts]: Start accepts. Automaton has 10286 states and 16379 transitions. Word has length 468 [2024-11-22 12:06:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:20,457 INFO L471 AbstractCegarLoop]: Abstraction has 10286 states and 16379 transitions. [2024-11-22 12:06:20,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 10286 states and 16379 transitions. [2024-11-22 12:06:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-22 12:06:20,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:20,472 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:20,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 12:06:20,472 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:20,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1636593229, now seen corresponding path program 1 times [2024-11-22 12:06:20,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:20,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421764017] [2024-11-22 12:06:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:20,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:20,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:20,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421764017] [2024-11-22 12:06:20,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421764017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:20,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:20,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:06:20,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758182483] [2024-11-22 12:06:20,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:20,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:06:20,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:20,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:06:20,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:20,961 INFO L87 Difference]: Start difference. First operand 10286 states and 16379 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:21,323 INFO L93 Difference]: Finished difference Result 26106 states and 41569 transitions. [2024-11-22 12:06:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:06:21,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 468 [2024-11-22 12:06:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:21,357 INFO L225 Difference]: With dead ends: 26106 [2024-11-22 12:06:21,357 INFO L226 Difference]: Without dead ends: 15956 [2024-11-22 12:06:21,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:21,377 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 326 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:21,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1120 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:06:21,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15956 states. [2024-11-22 12:06:21,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15956 to 15930. [2024-11-22 12:06:21,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15930 states, 14907 states have (on average 1.56617696384249) internal successors, (23347), 14931 states have internal predecessors, (23347), 955 states have call successors, (955), 67 states have call predecessors, (955), 67 states have return successors, (955), 931 states have call predecessors, (955), 955 states have call successors, (955) [2024-11-22 12:06:21,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15930 states to 15930 states and 25257 transitions. [2024-11-22 12:06:21,941 INFO L78 Accepts]: Start accepts. Automaton has 15930 states and 25257 transitions. Word has length 468 [2024-11-22 12:06:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:21,941 INFO L471 AbstractCegarLoop]: Abstraction has 15930 states and 25257 transitions. [2024-11-22 12:06:21,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 15930 states and 25257 transitions. [2024-11-22 12:06:21,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-22 12:06:21,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:21,959 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:21,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 12:06:21,959 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:21,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:21,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1076424113, now seen corresponding path program 1 times [2024-11-22 12:06:21,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:21,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641809485] [2024-11-22 12:06:21,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:21,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:31,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:31,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641809485] [2024-11-22 12:06:31,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641809485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:31,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:31,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 12:06:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494837523] [2024-11-22 12:06:31,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:31,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 12:06:31,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:31,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 12:06:31,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 12:06:31,331 INFO L87 Difference]: Start difference. First operand 15930 states and 25257 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2024-11-22 12:06:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:35,531 INFO L93 Difference]: Finished difference Result 55856 states and 89157 transitions. [2024-11-22 12:06:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 12:06:35,531 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 469 [2024-11-22 12:06:35,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:35,600 INFO L225 Difference]: With dead ends: 55856 [2024-11-22 12:06:35,600 INFO L226 Difference]: Without dead ends: 40062 [2024-11-22 12:06:35,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-22 12:06:35,619 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 2165 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2165 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:35,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2165 Valid, 2142 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-22 12:06:35,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40062 states. [2024-11-22 12:06:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40062 to 39322. [2024-11-22 12:06:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39322 states, 38042 states have (on average 1.5912938331318016) internal successors, (60536), 38098 states have internal predecessors, (60536), 1147 states have call successors, (1147), 132 states have call predecessors, (1147), 132 states have return successors, (1147), 1091 states have call predecessors, (1147), 1147 states have call successors, (1147) [2024-11-22 12:06:36,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39322 states to 39322 states and 62830 transitions. [2024-11-22 12:06:36,689 INFO L78 Accepts]: Start accepts. Automaton has 39322 states and 62830 transitions. Word has length 469 [2024-11-22 12:06:36,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:36,689 INFO L471 AbstractCegarLoop]: Abstraction has 39322 states and 62830 transitions. [2024-11-22 12:06:36,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2024-11-22 12:06:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 39322 states and 62830 transitions. [2024-11-22 12:06:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-22 12:06:36,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:36,726 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:36,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 12:06:36,727 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:36,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1817668303, now seen corresponding path program 1 times [2024-11-22 12:06:36,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:36,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002485391] [2024-11-22 12:06:36,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:37,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:37,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002485391] [2024-11-22 12:06:37,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002485391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:37,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:37,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:06:37,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832153082] [2024-11-22 12:06:37,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:37,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:06:37,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:06:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:06:37,539 INFO L87 Difference]: Start difference. First operand 39322 states and 62830 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:38,831 INFO L93 Difference]: Finished difference Result 98505 states and 157177 transitions. [2024-11-22 12:06:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:06:38,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 469 [2024-11-22 12:06:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:38,919 INFO L225 Difference]: With dead ends: 98505 [2024-11-22 12:06:38,920 INFO L226 Difference]: Without dead ends: 58179 [2024-11-22 12:06:38,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:06:38,960 INFO L432 NwaCegarLoop]: 704 mSDtfsCounter, 533 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:38,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1609 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:06:38,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58179 states. [2024-11-22 12:06:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58179 to 46592. [2024-11-22 12:06:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46592 states, 45312 states have (on average 1.5944562146892656) internal successors, (72248), 45368 states have internal predecessors, (72248), 1147 states have call successors, (1147), 132 states have call predecessors, (1147), 132 states have return successors, (1147), 1091 states have call predecessors, (1147), 1147 states have call successors, (1147) [2024-11-22 12:06:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46592 states to 46592 states and 74542 transitions. [2024-11-22 12:06:40,349 INFO L78 Accepts]: Start accepts. Automaton has 46592 states and 74542 transitions. Word has length 469 [2024-11-22 12:06:40,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:40,350 INFO L471 AbstractCegarLoop]: Abstraction has 46592 states and 74542 transitions. [2024-11-22 12:06:40,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 46592 states and 74542 transitions. [2024-11-22 12:06:40,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-22 12:06:40,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:40,397 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:40,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 12:06:40,398 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:40,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash -492812109, now seen corresponding path program 1 times [2024-11-22 12:06:40,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:40,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909580635] [2024-11-22 12:06:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:40,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:40,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:40,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909580635] [2024-11-22 12:06:40,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909580635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:40,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:40,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:06:40,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478077861] [2024-11-22 12:06:40,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:40,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:06:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:06:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:40,607 INFO L87 Difference]: Start difference. First operand 46592 states and 74542 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:42,021 INFO L93 Difference]: Finished difference Result 100659 states and 161204 transitions. [2024-11-22 12:06:42,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:06:42,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 469 [2024-11-22 12:06:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:42,103 INFO L225 Difference]: With dead ends: 100659 [2024-11-22 12:06:42,104 INFO L226 Difference]: Without dead ends: 54159 [2024-11-22 12:06:42,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:06:42,143 INFO L432 NwaCegarLoop]: 608 mSDtfsCounter, 441 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:42,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1040 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:06:42,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54159 states. [2024-11-22 12:06:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54159 to 38919. [2024-11-22 12:06:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38919 states, 37835 states have (on average 1.5923351394211709) internal successors, (60246), 37875 states have internal predecessors, (60246), 979 states have call successors, (979), 104 states have call predecessors, (979), 104 states have return successors, (979), 939 states have call predecessors, (979), 979 states have call successors, (979) [2024-11-22 12:06:43,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38919 states to 38919 states and 62204 transitions. [2024-11-22 12:06:43,288 INFO L78 Accepts]: Start accepts. Automaton has 38919 states and 62204 transitions. Word has length 469 [2024-11-22 12:06:43,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:43,288 INFO L471 AbstractCegarLoop]: Abstraction has 38919 states and 62204 transitions. [2024-11-22 12:06:43,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:43,289 INFO L276 IsEmpty]: Start isEmpty. Operand 38919 states and 62204 transitions. [2024-11-22 12:06:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-22 12:06:43,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:43,323 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:43,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 12:06:43,323 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:43,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1382377116, now seen corresponding path program 1 times [2024-11-22 12:06:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:43,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796104756] [2024-11-22 12:06:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:44,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:44,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796104756] [2024-11-22 12:06:44,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796104756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:44,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:44,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:06:44,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864106081] [2024-11-22 12:06:44,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:44,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:06:44,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:44,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:06:44,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:06:44,487 INFO L87 Difference]: Start difference. First operand 38919 states and 62204 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:45,869 INFO L93 Difference]: Finished difference Result 80090 states and 127387 transitions. [2024-11-22 12:06:45,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:06:45,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 469 [2024-11-22 12:06:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:45,931 INFO L225 Difference]: With dead ends: 80090 [2024-11-22 12:06:45,931 INFO L226 Difference]: Without dead ends: 40975 [2024-11-22 12:06:45,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:06:45,966 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 540 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:45,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1489 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 12:06:45,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40975 states. [2024-11-22 12:06:46,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40975 to 32289. [2024-11-22 12:06:46,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32289 states, 31401 states have (on average 1.5886755198879017) internal successors, (49886), 31425 states have internal predecessors, (49886), 811 states have call successors, (811), 76 states have call predecessors, (811), 76 states have return successors, (811), 787 states have call predecessors, (811), 811 states have call successors, (811) [2024-11-22 12:06:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32289 states to 32289 states and 51508 transitions. [2024-11-22 12:06:46,977 INFO L78 Accepts]: Start accepts. Automaton has 32289 states and 51508 transitions. Word has length 469 [2024-11-22 12:06:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:46,978 INFO L471 AbstractCegarLoop]: Abstraction has 32289 states and 51508 transitions. [2024-11-22 12:06:46,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 32289 states and 51508 transitions. [2024-11-22 12:06:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-22 12:06:47,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:47,007 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:47,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 12:06:47,007 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:47,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:47,007 INFO L85 PathProgramCache]: Analyzing trace with hash 860070038, now seen corresponding path program 1 times [2024-11-22 12:06:47,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:47,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741387180] [2024-11-22 12:06:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:47,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-22 12:06:47,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:47,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741387180] [2024-11-22 12:06:47,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741387180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:06:47,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:06:47,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:06:47,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441799501] [2024-11-22 12:06:47,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:06:47,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:06:47,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:06:47,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:06:47,726 INFO L87 Difference]: Start difference. First operand 32289 states and 51508 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:49,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:49,719 INFO L93 Difference]: Finished difference Result 90485 states and 143768 transitions. [2024-11-22 12:06:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:06:49,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 469 [2024-11-22 12:06:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:49,860 INFO L225 Difference]: With dead ends: 90485 [2024-11-22 12:06:49,860 INFO L226 Difference]: Without dead ends: 58288 [2024-11-22 12:06:49,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:06:49,886 INFO L432 NwaCegarLoop]: 712 mSDtfsCounter, 913 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:49,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1864 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 12:06:49,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58288 states. [2024-11-22 12:06:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58288 to 35359. [2024-11-22 12:06:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35359 states, 34471 states have (on average 1.5900031910881611) internal successors, (54809), 34495 states have internal predecessors, (54809), 811 states have call successors, (811), 76 states have call predecessors, (811), 76 states have return successors, (811), 787 states have call predecessors, (811), 811 states have call successors, (811) [2024-11-22 12:06:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35359 states to 35359 states and 56431 transitions. [2024-11-22 12:06:51,044 INFO L78 Accepts]: Start accepts. Automaton has 35359 states and 56431 transitions. Word has length 469 [2024-11-22 12:06:51,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:51,045 INFO L471 AbstractCegarLoop]: Abstraction has 35359 states and 56431 transitions. [2024-11-22 12:06:51,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-11-22 12:06:51,045 INFO L276 IsEmpty]: Start isEmpty. Operand 35359 states and 56431 transitions. [2024-11-22 12:06:51,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-22 12:06:51,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:51,072 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:51,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 12:06:51,073 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:51,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:51,073 INFO L85 PathProgramCache]: Analyzing trace with hash -219203370, now seen corresponding path program 1 times [2024-11-22 12:06:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:51,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802764682] [2024-11-22 12:06:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:51,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat