./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-66.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_fillercode_fillercodestructure_filler-pe-cn_file-66.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 75e16fbc6add136470e5a368bd6380d698425fcea4219ad0b84abde2182994d0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 08:18:32,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 08:18:32,361 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 08:18:32,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 08:18:32,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 08:18:32,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 08:18:32,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 08:18:32,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 08:18:32,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 08:18:32,395 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 08:18:32,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 08:18:32,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 08:18:32,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 08:18:32,398 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 08:18:32,398 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 08:18:32,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 08:18:32,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 08:18:32,399 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 08:18:32,399 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 08:18:32,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 08:18:32,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 08:18:32,400 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 08:18:32,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 08:18:32,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 08:18:32,404 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 08:18:32,404 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 08:18:32,404 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 08:18:32,404 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 08:18:32,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 08:18:32,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 08:18:32,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 08:18:32,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 08:18:32,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:18:32,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 08:18:32,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 08:18:32,406 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 08:18:32,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 08:18:32,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 08:18:32,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 08:18:32,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 08:18:32,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 08:18:32,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 08:18:32,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75e16fbc6add136470e5a368bd6380d698425fcea4219ad0b84abde2182994d0 [2024-11-22 08:18:32,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 08:18:32,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 08:18:32,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 08:18:32,643 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 08:18:32,643 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 08:18:32,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-66.i [2024-11-22 08:18:33,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 08:18:34,188 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 08:18:34,189 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-66.i [2024-11-22 08:18:34,203 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27ece4528/dcc8459bc5e942c585505499afd41594/FLAGef85e95df [2024-11-22 08:18:34,222 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27ece4528/dcc8459bc5e942c585505499afd41594 [2024-11-22 08:18:34,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 08:18:34,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 08:18:34,227 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 08:18:34,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 08:18:34,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 08:18:34,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e618cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34, skipping insertion in model container [2024-11-22 08:18:34,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,269 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 08:18:34,417 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-66.i[919,932] [2024-11-22 08:18:34,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:18:34,519 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 08:18:34,529 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-66.i[919,932] [2024-11-22 08:18:34,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:18:34,569 INFO L204 MainTranslator]: Completed translation [2024-11-22 08:18:34,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34 WrapperNode [2024-11-22 08:18:34,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 08:18:34,574 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 08:18:34,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 08:18:34,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 08:18:34,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,603 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,634 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 253 [2024-11-22 08:18:34,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 08:18:34,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 08:18:34,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 08:18:34,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 08:18:34,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,657 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,670 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 08:18:34,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,686 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,687 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 08:18:34,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 08:18:34,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 08:18:34,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 08:18:34,692 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (1/1) ... [2024-11-22 08:18:34,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:18:34,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:18:34,740 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 08:18:34,751 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 08:18:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 08:18:34,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 08:18:34,788 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 08:18:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 08:18:34,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 08:18:34,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 08:18:34,869 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 08:18:34,874 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 08:18:35,256 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-22 08:18:35,257 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 08:18:35,278 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 08:18:35,279 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 08:18:35,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:18:35 BoogieIcfgContainer [2024-11-22 08:18:35,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 08:18:35,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 08:18:35,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 08:18:35,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 08:18:35,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:18:34" (1/3) ... [2024-11-22 08:18:35,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa3c4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:18:35, skipping insertion in model container [2024-11-22 08:18:35,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:18:34" (2/3) ... [2024-11-22 08:18:35,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa3c4cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:18:35, skipping insertion in model container [2024-11-22 08:18:35,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:18:35" (3/3) ... [2024-11-22 08:18:35,290 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-66.i [2024-11-22 08:18:35,304 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 08:18:35,304 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 08:18:35,374 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 08:18:35,383 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;@6070f2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 08:18:35,383 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 08:18:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-22 08:18:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:18:35,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:18:35,410 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:35,410 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:18:35,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:18:35,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1411479423, now seen corresponding path program 1 times [2024-11-22 08:18:35,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:18:35,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844627638] [2024-11-22 08:18:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:18:35,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:18:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:18:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2024-11-22 08:18:35,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:18:35,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844627638] [2024-11-22 08:18:35,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844627638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:18:35,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676012668] [2024-11-22 08:18:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:18:35,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:18:35,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:18:35,860 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 08:18:35,864 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 08:18:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:18:36,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 08:18:36,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:18:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2024-11-22 08:18:36,106 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 08:18:36,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676012668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:18:36,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 08:18:36,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 08:18:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122220685] [2024-11-22 08:18:36,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:18:36,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 08:18:36,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:18:36,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 08:18:36,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 08:18:36,143 INFO L87 Difference]: Start difference. First operand has 114 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 68 states have internal predecessors, (95), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-22 08:18:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:18:36,170 INFO L93 Difference]: Finished difference Result 221 states and 404 transitions. [2024-11-22 08:18:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 08:18:36,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 270 [2024-11-22 08:18:36,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:18:36,178 INFO L225 Difference]: With dead ends: 221 [2024-11-22 08:18:36,178 INFO L226 Difference]: Without dead ends: 110 [2024-11-22 08:18:36,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 271 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 08:18:36,185 INFO L432 NwaCegarLoop]: 176 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, 176 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 08:18:36,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:18:36,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-22 08:18:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-22 08:18:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 64 states have (on average 1.375) internal successors, (88), 64 states have internal predecessors, (88), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-22 08:18:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 176 transitions. [2024-11-22 08:18:36,232 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 176 transitions. Word has length 270 [2024-11-22 08:18:36,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:18:36,232 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 176 transitions. [2024-11-22 08:18:36,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-22 08:18:36,232 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 176 transitions. [2024-11-22 08:18:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:18:36,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:18:36,237 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:36,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 08:18:36,437 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 08:18:36,438 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:18:36,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:18:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1173288253, now seen corresponding path program 1 times [2024-11-22 08:18:36,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:18:36,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570540063] [2024-11-22 08:18:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:18:36,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:18:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:18:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:18:41,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:18:41,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570540063] [2024-11-22 08:18:41,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570540063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:18:41,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:18:41,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 08:18:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743125835] [2024-11-22 08:18:41,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:18:41,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 08:18:41,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:18:41,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 08:18:41,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-22 08:18:41,267 INFO L87 Difference]: Start difference. First operand 110 states and 176 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:18:42,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:18:42,087 INFO L93 Difference]: Finished difference Result 429 states and 681 transitions. [2024-11-22 08:18:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 08:18:42,088 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:18:42,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:18:42,094 INFO L225 Difference]: With dead ends: 429 [2024-11-22 08:18:42,094 INFO L226 Difference]: Without dead ends: 322 [2024-11-22 08:18:42,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-11-22 08:18:42,096 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 523 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 08:18:42,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1127 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 08:18:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-22 08:18:42,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 181. [2024-11-22 08:18:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 130 states have (on average 1.4923076923076923) internal successors, (194), 131 states have internal predecessors, (194), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 08:18:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 290 transitions. [2024-11-22 08:18:42,123 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 290 transitions. Word has length 270 [2024-11-22 08:18:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:18:42,124 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 290 transitions. [2024-11-22 08:18:42,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:18:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 290 transitions. [2024-11-22 08:18:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:18:42,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:18:42,127 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:42,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 08:18:42,127 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:18:42,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:18:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1431453691, now seen corresponding path program 1 times [2024-11-22 08:18:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:18:42,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508516841] [2024-11-22 08:18:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:18:42,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:18:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:19:07,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:07,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508516841] [2024-11-22 08:19:07,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508516841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:07,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:07,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 08:19:07,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361842691] [2024-11-22 08:19:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:07,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 08:19:07,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:07,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 08:19:07,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-22 08:19:07,809 INFO L87 Difference]: Start difference. First operand 181 states and 290 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:08,846 INFO L93 Difference]: Finished difference Result 298 states and 465 transitions. [2024-11-22 08:19:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 08:19:08,850 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:19:08,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:08,858 INFO L225 Difference]: With dead ends: 298 [2024-11-22 08:19:08,858 INFO L226 Difference]: Without dead ends: 296 [2024-11-22 08:19:08,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2024-11-22 08:19:08,860 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 346 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:08,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1284 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 08:19:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-22 08:19:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 182. [2024-11-22 08:19:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 131 states have (on average 1.4885496183206106) internal successors, (195), 132 states have internal predecessors, (195), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 08:19:08,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 291 transitions. [2024-11-22 08:19:08,911 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 291 transitions. Word has length 270 [2024-11-22 08:19:08,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:08,911 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 291 transitions. [2024-11-22 08:19:08,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:08,912 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 291 transitions. [2024-11-22 08:19:08,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:19:08,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:08,917 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:08,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 08:19:08,917 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:08,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:08,918 INFO L85 PathProgramCache]: Analyzing trace with hash 152219899, now seen corresponding path program 1 times [2024-11-22 08:19:08,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:08,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494397973] [2024-11-22 08:19:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:08,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:19:12,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:12,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494397973] [2024-11-22 08:19:12,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494397973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:12,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:12,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 08:19:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433988352] [2024-11-22 08:19:12,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:12,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 08:19:12,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:12,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 08:19:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-22 08:19:12,678 INFO L87 Difference]: Start difference. First operand 182 states and 291 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:13,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:13,467 INFO L93 Difference]: Finished difference Result 322 states and 500 transitions. [2024-11-22 08:19:13,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 08:19:13,468 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:19:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:13,470 INFO L225 Difference]: With dead ends: 322 [2024-11-22 08:19:13,470 INFO L226 Difference]: Without dead ends: 320 [2024-11-22 08:19:13,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-11-22 08:19:13,471 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 437 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:13,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1535 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 08:19:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-22 08:19:13,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 186. [2024-11-22 08:19:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 135 states have (on average 1.488888888888889) internal successors, (201), 136 states have internal predecessors, (201), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 08:19:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 297 transitions. [2024-11-22 08:19:13,484 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 297 transitions. Word has length 270 [2024-11-22 08:19:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:13,485 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 297 transitions. [2024-11-22 08:19:13,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 297 transitions. [2024-11-22 08:19:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:19:13,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:13,487 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:13,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 08:19:13,487 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:13,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 410385337, now seen corresponding path program 1 times [2024-11-22 08:19:13,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:13,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440820804] [2024-11-22 08:19:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:13,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:19:18,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:18,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440820804] [2024-11-22 08:19:18,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440820804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:18,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:18,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 08:19:18,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039568321] [2024-11-22 08:19:18,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:18,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 08:19:18,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:18,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 08:19:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-22 08:19:18,205 INFO L87 Difference]: Start difference. First operand 186 states and 297 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:19,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:19,541 INFO L93 Difference]: Finished difference Result 320 states and 498 transitions. [2024-11-22 08:19:19,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 08:19:19,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:19:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:19,543 INFO L225 Difference]: With dead ends: 320 [2024-11-22 08:19:19,544 INFO L226 Difference]: Without dead ends: 318 [2024-11-22 08:19:19,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-22 08:19:19,545 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 461 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:19,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1722 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 08:19:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-22 08:19:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 184. [2024-11-22 08:19:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 133 states have (on average 1.4887218045112782) internal successors, (198), 134 states have internal predecessors, (198), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-22 08:19:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 294 transitions. [2024-11-22 08:19:19,561 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 294 transitions. Word has length 270 [2024-11-22 08:19:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:19,561 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 294 transitions. [2024-11-22 08:19:19,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 294 transitions. [2024-11-22 08:19:19,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:19:19,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:19,565 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:19,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 08:19:19,565 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:19,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash -515655489, now seen corresponding path program 1 times [2024-11-22 08:19:19,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:19,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914572] [2024-11-22 08:19:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:19,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:19:19,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:19,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914572] [2024-11-22 08:19:19,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:19,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:19,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:19:19,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467495985] [2024-11-22 08:19:19,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:19,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:19:19,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:19,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:19:19,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:19:19,636 INFO L87 Difference]: Start difference. First operand 184 states and 294 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:19,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:19,676 INFO L93 Difference]: Finished difference Result 511 states and 820 transitions. [2024-11-22 08:19:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:19:19,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:19:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:19,684 INFO L225 Difference]: With dead ends: 511 [2024-11-22 08:19:19,684 INFO L226 Difference]: Without dead ends: 330 [2024-11-22 08:19:19,685 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 08:19:19,685 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 163 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:19,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 492 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:19:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-22 08:19:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2024-11-22 08:19:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 229 states have internal predecessors, (326), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-22 08:19:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 518 transitions. [2024-11-22 08:19:19,730 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 518 transitions. Word has length 270 [2024-11-22 08:19:19,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:19,732 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 518 transitions. [2024-11-22 08:19:19,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 518 transitions. [2024-11-22 08:19:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:19:19,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:19,734 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:19,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 08:19:19,735 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:19,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1795519167, now seen corresponding path program 1 times [2024-11-22 08:19:19,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:19,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109191559] [2024-11-22 08:19:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:19,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:19:19,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:19,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109191559] [2024-11-22 08:19:19,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109191559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:19,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:19,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 08:19:19,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501364084] [2024-11-22 08:19:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:19,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 08:19:19,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 08:19:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:19:19,831 INFO L87 Difference]: Start difference. First operand 328 states and 518 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:20,047 INFO L93 Difference]: Finished difference Result 958 states and 1501 transitions. [2024-11-22 08:19:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 08:19:20,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:19:20,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:20,052 INFO L225 Difference]: With dead ends: 958 [2024-11-22 08:19:20,053 INFO L226 Difference]: Without dead ends: 633 [2024-11-22 08:19:20,054 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 08:19:20,055 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 145 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:20,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 639 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 08:19:20,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2024-11-22 08:19:20,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 562. [2024-11-22 08:19:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 365 states have (on average 1.389041095890411) internal successors, (507), 368 states have internal predecessors, (507), 188 states have call successors, (188), 8 states have call predecessors, (188), 8 states have return successors, (188), 185 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-22 08:19:20,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 883 transitions. [2024-11-22 08:19:20,126 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 883 transitions. Word has length 270 [2024-11-22 08:19:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:20,127 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 883 transitions. [2024-11-22 08:19:20,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:20,127 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 883 transitions. [2024-11-22 08:19:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:19:20,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:20,133 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:20,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 08:19:20,134 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:20,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1478379775, now seen corresponding path program 1 times [2024-11-22 08:19:20,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:20,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248667393] [2024-11-22 08:19:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:19:22,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:22,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248667393] [2024-11-22 08:19:22,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248667393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:22,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:22,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 08:19:22,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293035810] [2024-11-22 08:19:22,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:22,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 08:19:22,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:22,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 08:19:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2024-11-22 08:19:22,381 INFO L87 Difference]: Start difference. First operand 562 states and 883 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:23,164 INFO L93 Difference]: Finished difference Result 786 states and 1194 transitions. [2024-11-22 08:19:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 08:19:23,165 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:19:23,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:23,168 INFO L225 Difference]: With dead ends: 786 [2024-11-22 08:19:23,168 INFO L226 Difference]: Without dead ends: 784 [2024-11-22 08:19:23,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-22 08:19:23,170 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 613 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:23,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1134 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 08:19:23,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-22 08:19:23,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 657. [2024-11-22 08:19:23,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 449 states have (on average 1.4075723830734967) internal successors, (632), 454 states have internal predecessors, (632), 196 states have call successors, (196), 11 states have call predecessors, (196), 11 states have return successors, (196), 191 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-22 08:19:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1024 transitions. [2024-11-22 08:19:23,217 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1024 transitions. Word has length 270 [2024-11-22 08:19:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:23,218 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1024 transitions. [2024-11-22 08:19:23,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1024 transitions. [2024-11-22 08:19:23,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:19:23,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:23,219 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:23,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 08:19:23,220 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:23,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:23,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1736545213, now seen corresponding path program 1 times [2024-11-22 08:19:23,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:23,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403718647] [2024-11-22 08:19:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:23,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:19:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403718647] [2024-11-22 08:19:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403718647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:26,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 08:19:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85368705] [2024-11-22 08:19:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:26,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 08:19:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 08:19:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-22 08:19:26,407 INFO L87 Difference]: Start difference. First operand 657 states and 1024 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:28,437 INFO L93 Difference]: Finished difference Result 784 states and 1192 transitions. [2024-11-22 08:19:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 08:19:28,438 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 270 [2024-11-22 08:19:28,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:28,441 INFO L225 Difference]: With dead ends: 784 [2024-11-22 08:19:28,441 INFO L226 Difference]: Without dead ends: 782 [2024-11-22 08:19:28,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-22 08:19:28,442 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 507 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:28,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1462 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 08:19:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-11-22 08:19:28,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 657. [2024-11-22 08:19:28,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 449 states have (on average 1.4075723830734967) internal successors, (632), 454 states have internal predecessors, (632), 196 states have call successors, (196), 11 states have call predecessors, (196), 11 states have return successors, (196), 191 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-22 08:19:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1024 transitions. [2024-11-22 08:19:28,490 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1024 transitions. Word has length 270 [2024-11-22 08:19:28,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:28,491 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1024 transitions. [2024-11-22 08:19:28,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1024 transitions. [2024-11-22 08:19:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-22 08:19:28,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:28,492 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:28,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 08:19:28,493 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:28,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:28,493 INFO L85 PathProgramCache]: Analyzing trace with hash 355639803, now seen corresponding path program 1 times [2024-11-22 08:19:28,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:28,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018394010] [2024-11-22 08:19:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:28,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:19:28,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:28,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018394010] [2024-11-22 08:19:28,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018394010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:28,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:28,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 08:19:28,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893691491] [2024-11-22 08:19:28,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:28,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 08:19:28,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:28,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 08:19:28,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 08:19:28,945 INFO L87 Difference]: Start difference. First operand 657 states and 1024 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 5 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 5 states have call predecessors, (44), 5 states have call successors, (44) [2024-11-22 08:19:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:29,457 INFO L93 Difference]: Finished difference Result 1268 states and 1934 transitions. [2024-11-22 08:19:29,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 08:19:29,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 5 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 5 states have call predecessors, (44), 5 states have call successors, (44) Word has length 270 [2024-11-22 08:19:29,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:29,464 INFO L225 Difference]: With dead ends: 1268 [2024-11-22 08:19:29,464 INFO L226 Difference]: Without dead ends: 697 [2024-11-22 08:19:29,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-22 08:19:29,468 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 330 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:29,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 397 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 08:19:29,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-22 08:19:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 592. [2024-11-22 08:19:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 393 states have (on average 1.366412213740458) internal successors, (537), 396 states have internal predecessors, (537), 182 states have call successors, (182), 16 states have call predecessors, (182), 16 states have return successors, (182), 179 states have call predecessors, (182), 182 states have call successors, (182) [2024-11-22 08:19:29,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 901 transitions. [2024-11-22 08:19:29,521 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 901 transitions. Word has length 270 [2024-11-22 08:19:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:29,522 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 901 transitions. [2024-11-22 08:19:29,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 5 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 5 states have call predecessors, (44), 5 states have call successors, (44) [2024-11-22 08:19:29,522 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 901 transitions. [2024-11-22 08:19:29,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-22 08:19:29,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:29,524 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:29,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 08:19:29,524 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:29,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:29,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1365972448, now seen corresponding path program 1 times [2024-11-22 08:19:29,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:29,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618812027] [2024-11-22 08:19:29,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:29,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:19:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-22 08:19:32,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:19:32,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618812027] [2024-11-22 08:19:32,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618812027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:19:32,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:19:32,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 08:19:32,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084222109] [2024-11-22 08:19:32,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:19:32,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 08:19:32,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:19:32,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 08:19:32,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-22 08:19:32,666 INFO L87 Difference]: Start difference. First operand 592 states and 901 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:19:33,590 INFO L93 Difference]: Finished difference Result 1330 states and 2015 transitions. [2024-11-22 08:19:33,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 08:19:33,591 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 271 [2024-11-22 08:19:33,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:19:33,599 INFO L225 Difference]: With dead ends: 1330 [2024-11-22 08:19:33,599 INFO L226 Difference]: Without dead ends: 1006 [2024-11-22 08:19:33,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2024-11-22 08:19:33,601 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 643 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 08:19:33,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1408 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 08:19:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2024-11-22 08:19:33,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 525. [2024-11-22 08:19:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 332 states have (on average 1.3313253012048192) internal successors, (442), 332 states have internal predecessors, (442), 176 states have call successors, (176), 16 states have call predecessors, (176), 16 states have return successors, (176), 176 states have call predecessors, (176), 176 states have call successors, (176) [2024-11-22 08:19:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 794 transitions. [2024-11-22 08:19:33,660 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 794 transitions. Word has length 271 [2024-11-22 08:19:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:19:33,661 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 794 transitions. [2024-11-22 08:19:33,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-22 08:19:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 794 transitions. [2024-11-22 08:19:33,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-22 08:19:33,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:19:33,662 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:33,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 08:19:33,663 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:19:33,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:19:33,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1624137886, now seen corresponding path program 1 times [2024-11-22 08:19:33,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:19:33,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288442950] [2024-11-22 08:19:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:19:33,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:19:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat