./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-31.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 210516d030b290bba6a90f31a780a44a85dd399391b1c76362a4e7b38f745547 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:30:59,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:30:59,556 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:30:59,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:30:59,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:30:59,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:30:59,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:30:59,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:30:59,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:30:59,584 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:30:59,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:30:59,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:30:59,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:30:59,590 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:30:59,590 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:30:59,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:30:59,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:30:59,592 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:30:59,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:30:59,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:30:59,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:30:59,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:30:59,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:30:59,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:30:59,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:30:59,594 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:30:59,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:30:59,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:30:59,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:30:59,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:30:59,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:30:59,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:30:59,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:30:59,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:30:59,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:30:59,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:30:59,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:30:59,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:30:59,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:30:59,598 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:30:59,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:30:59,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:30:59,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 210516d030b290bba6a90f31a780a44a85dd399391b1c76362a4e7b38f745547 [2024-11-18 19:30:59,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:30:59,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:30:59,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:30:59,861 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:30:59,861 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:30:59,862 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-31.i [2024-11-18 19:31:01,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:31:01,521 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:31:01,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-31.i [2024-11-18 19:31:01,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e956fefba/c854a5418faf4bdf8f2777be2970d260/FLAG74cea7118 [2024-11-18 19:31:01,547 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e956fefba/c854a5418faf4bdf8f2777be2970d260 [2024-11-18 19:31:01,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:31:01,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:31:01,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:31:01,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:31:01,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:31:01,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:01" (1/1) ... [2024-11-18 19:31:01,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695359fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:01, skipping insertion in model container [2024-11-18 19:31:01,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:31:01" (1/1) ... [2024-11-18 19:31:01,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:31:01,859 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_fillercodesize_ps-cn-250_file-31.i[916,929] [2024-11-18 19:31:02,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:31:02,035 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:31:02,046 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_fillercodesize_ps-cn-250_file-31.i[916,929] [2024-11-18 19:31:02,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:31:02,132 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:31:02,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02 WrapperNode [2024-11-18 19:31:02,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:31:02,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:31:02,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:31:02,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:31:02,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,226 INFO L138 Inliner]: procedures = 26, calls = 83, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 490 [2024-11-18 19:31:02,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:31:02,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:31:02,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:31:02,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:31:02,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,304 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 19:31:02,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:31:02,375 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:31:02,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:31:02,376 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:31:02,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (1/1) ... [2024-11-18 19:31:02,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:31:02,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:02,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 19:31:02,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 19:31:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:31:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:31:02,472 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:31:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:31:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:31:02,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:31:02,584 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:31:02,587 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:31:03,487 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-18 19:31:03,487 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:31:03,509 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:31:03,509 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 19:31:03,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:03 BoogieIcfgContainer [2024-11-18 19:31:03,510 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:31:03,512 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:31:03,512 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:31:03,515 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:31:03,515 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:31:01" (1/3) ... [2024-11-18 19:31:03,516 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3968307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:03, skipping insertion in model container [2024-11-18 19:31:03,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:31:02" (2/3) ... [2024-11-18 19:31:03,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3968307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:31:03, skipping insertion in model container [2024-11-18 19:31:03,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:31:03" (3/3) ... [2024-11-18 19:31:03,519 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-31.i [2024-11-18 19:31:03,534 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:31:03,535 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:31:03,615 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:31:03,623 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;@43ce6b21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:31:03,623 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:31:03,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 210 states, 137 states have (on average 1.5474452554744527) internal successors, (212), 138 states have internal predecessors, (212), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 19:31:03,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-11-18 19:31:03,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:03,663 INFO L215 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:03,664 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:03,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2053537289, now seen corresponding path program 1 times [2024-11-18 19:31:03,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:03,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506057909] [2024-11-18 19:31:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:03,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2024-11-18 19:31:04,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:04,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506057909] [2024-11-18 19:31:04,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506057909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:31:04,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15291932] [2024-11-18 19:31:04,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:04,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:31:04,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:31:04,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:31:04,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 19:31:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:04,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:31:04,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:31:04,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 9522 trivial. 0 not checked. [2024-11-18 19:31:04,651 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:31:04,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15291932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:04,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:31:04,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:31:04,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894691265] [2024-11-18 19:31:04,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:04,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:31:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:04,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:31:04,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:31:04,698 INFO L87 Difference]: Start difference. First operand has 210 states, 137 states have (on average 1.5474452554744527) internal successors, (212), 138 states have internal predecessors, (212), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 2 states have call successors, (70) [2024-11-18 19:31:04,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:04,754 INFO L93 Difference]: Finished difference Result 413 states and 768 transitions. [2024-11-18 19:31:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:31:04,756 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 2 states have call successors, (70) Word has length 441 [2024-11-18 19:31:04,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:04,767 INFO L225 Difference]: With dead ends: 413 [2024-11-18 19:31:04,768 INFO L226 Difference]: Without dead ends: 206 [2024-11-18 19:31:04,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:31:04,780 INFO L432 NwaCegarLoop]: 342 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, 342 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:04,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:04,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-18 19:31:04,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-18 19:31:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 134 states have (on average 1.507462686567164) internal successors, (202), 134 states have internal predecessors, (202), 70 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-18 19:31:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 342 transitions. [2024-11-18 19:31:04,856 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 342 transitions. Word has length 441 [2024-11-18 19:31:04,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:04,858 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 342 transitions. [2024-11-18 19:31:04,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (70), 2 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 2 states have call successors, (70) [2024-11-18 19:31:04,859 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 342 transitions. [2024-11-18 19:31:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-18 19:31:04,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:04,869 INFO L215 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:04,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 19:31:05,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 19:31:05,074 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:05,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash 516589463, now seen corresponding path program 1 times [2024-11-18 19:31:05,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:05,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706599281] [2024-11-18 19:31:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2024-11-18 19:31:05,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706599281] [2024-11-18 19:31:05,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706599281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:05,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:05,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:31:05,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936345651] [2024-11-18 19:31:05,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:05,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:31:05,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:05,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:31:05,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:05,628 INFO L87 Difference]: Start difference. First operand 206 states and 342 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2024-11-18 19:31:05,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:05,737 INFO L93 Difference]: Finished difference Result 612 states and 1020 transitions. [2024-11-18 19:31:05,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:31:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 442 [2024-11-18 19:31:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:05,745 INFO L225 Difference]: With dead ends: 612 [2024-11-18 19:31:05,749 INFO L226 Difference]: Without dead ends: 409 [2024-11-18 19:31:05,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:05,753 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 208 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:05,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 659 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-18 19:31:05,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 407. [2024-11-18 19:31:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 264 states have (on average 1.5) internal successors, (396), 264 states have internal predecessors, (396), 140 states have call successors, (140), 2 states have call predecessors, (140), 2 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-18 19:31:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 676 transitions. [2024-11-18 19:31:05,839 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 676 transitions. Word has length 442 [2024-11-18 19:31:05,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:05,841 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 676 transitions. [2024-11-18 19:31:05,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2024-11-18 19:31:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 676 transitions. [2024-11-18 19:31:05,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-18 19:31:05,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:05,849 INFO L215 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:05,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:31:05,850 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:05,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:05,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1471409862, now seen corresponding path program 1 times [2024-11-18 19:31:05,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:05,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808820874] [2024-11-18 19:31:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:05,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2024-11-18 19:31:06,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:06,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808820874] [2024-11-18 19:31:06,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808820874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:06,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:06,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:31:06,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759752694] [2024-11-18 19:31:06,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:06,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:31:06,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:31:06,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:06,074 INFO L87 Difference]: Start difference. First operand 407 states and 676 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2024-11-18 19:31:06,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:06,156 INFO L93 Difference]: Finished difference Result 1051 states and 1742 transitions. [2024-11-18 19:31:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:31:06,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 444 [2024-11-18 19:31:06,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:06,168 INFO L225 Difference]: With dead ends: 1051 [2024-11-18 19:31:06,169 INFO L226 Difference]: Without dead ends: 647 [2024-11-18 19:31:06,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:06,172 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 186 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:06,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 775 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:06,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2024-11-18 19:31:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 643. [2024-11-18 19:31:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 438 states have (on average 1.5022831050228311) internal successors, (658), 440 states have internal predecessors, (658), 200 states have call successors, (200), 4 states have call predecessors, (200), 4 states have return successors, (200), 198 states have call predecessors, (200), 200 states have call successors, (200) [2024-11-18 19:31:06,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1058 transitions. [2024-11-18 19:31:06,285 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1058 transitions. Word has length 444 [2024-11-18 19:31:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:06,288 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 1058 transitions. [2024-11-18 19:31:06,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2024-11-18 19:31:06,289 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1058 transitions. [2024-11-18 19:31:06,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-18 19:31:06,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:06,297 INFO L215 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:06,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:31:06,297 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:06,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:06,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1223263368, now seen corresponding path program 1 times [2024-11-18 19:31:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:06,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147559000] [2024-11-18 19:31:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:06,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2024-11-18 19:31:06,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147559000] [2024-11-18 19:31:06,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147559000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:06,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:06,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:31:06,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004755041] [2024-11-18 19:31:06,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:06,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:31:06,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:06,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:31:06,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:06,530 INFO L87 Difference]: Start difference. First operand 643 states and 1058 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2024-11-18 19:31:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:06,602 INFO L93 Difference]: Finished difference Result 1297 states and 2126 transitions. [2024-11-18 19:31:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:31:06,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 444 [2024-11-18 19:31:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:06,609 INFO L225 Difference]: With dead ends: 1297 [2024-11-18 19:31:06,609 INFO L226 Difference]: Without dead ends: 657 [2024-11-18 19:31:06,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:06,613 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 168 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:06,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 705 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:06,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-18 19:31:06,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 517. [2024-11-18 19:31:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 372 states have (on average 1.5161290322580645) internal successors, (564), 372 states have internal predecessors, (564), 140 states have call successors, (140), 4 states have call predecessors, (140), 4 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-18 19:31:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 844 transitions. [2024-11-18 19:31:06,677 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 844 transitions. Word has length 444 [2024-11-18 19:31:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:06,681 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 844 transitions. [2024-11-18 19:31:06,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2024-11-18 19:31:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 844 transitions. [2024-11-18 19:31:06,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-18 19:31:06,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:06,689 INFO L215 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:06,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:31:06,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:06,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2060586678, now seen corresponding path program 1 times [2024-11-18 19:31:06,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380568998] [2024-11-18 19:31:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2024-11-18 19:31:06,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:06,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380568998] [2024-11-18 19:31:06,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380568998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:06,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:06,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:31:06,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546442262] [2024-11-18 19:31:06,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:06,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:31:06,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:06,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:31:06,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:06,891 INFO L87 Difference]: Start difference. First operand 517 states and 844 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2024-11-18 19:31:06,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:06,977 INFO L93 Difference]: Finished difference Result 1543 states and 2522 transitions. [2024-11-18 19:31:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:31:06,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 444 [2024-11-18 19:31:06,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:06,985 INFO L225 Difference]: With dead ends: 1543 [2024-11-18 19:31:06,986 INFO L226 Difference]: Without dead ends: 1029 [2024-11-18 19:31:06,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:31:06,989 INFO L432 NwaCegarLoop]: 667 mSDtfsCounter, 330 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:06,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 998 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:31:06,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2024-11-18 19:31:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 525. [2024-11-18 19:31:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 380 states have (on average 1.5105263157894737) internal successors, (574), 380 states have internal predecessors, (574), 140 states have call successors, (140), 4 states have call predecessors, (140), 4 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-18 19:31:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 854 transitions. [2024-11-18 19:31:07,072 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 854 transitions. Word has length 444 [2024-11-18 19:31:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:07,074 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 854 transitions. [2024-11-18 19:31:07,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2024-11-18 19:31:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 854 transitions. [2024-11-18 19:31:07,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-18 19:31:07,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:07,083 INFO L215 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:07,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:31:07,084 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:07,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1251240052, now seen corresponding path program 1 times [2024-11-18 19:31:07,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:07,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859192339] [2024-11-18 19:31:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:07,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:31:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2024-11-18 19:31:07,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:31:07,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859192339] [2024-11-18 19:31:07,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859192339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:31:07,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:31:07,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:31:07,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541511894] [2024-11-18 19:31:07,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:31:07,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:31:07,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:31:07,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:31:07,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:31:07,574 INFO L87 Difference]: Start difference. First operand 525 states and 854 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2024-11-18 19:31:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:31:07,747 INFO L93 Difference]: Finished difference Result 1051 states and 1710 transitions. [2024-11-18 19:31:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:31:07,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) Word has length 444 [2024-11-18 19:31:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:31:07,753 INFO L225 Difference]: With dead ends: 1051 [2024-11-18 19:31:07,753 INFO L226 Difference]: Without dead ends: 529 [2024-11-18 19:31:07,755 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 [2024-11-18 19:31:07,756 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 207 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:31:07,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1297 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:31:07,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-18 19:31:07,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2024-11-18 19:31:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 382 states have (on average 1.5078534031413613) internal successors, (576), 382 states have internal predecessors, (576), 140 states have call successors, (140), 4 states have call predecessors, (140), 4 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-18 19:31:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 856 transitions. [2024-11-18 19:31:07,805 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 856 transitions. Word has length 444 [2024-11-18 19:31:07,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:31:07,806 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 856 transitions. [2024-11-18 19:31:07,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 1 states have call successors, (70), 1 states have call predecessors, (70), 1 states have return successors, (70), 1 states have call predecessors, (70), 1 states have call successors, (70) [2024-11-18 19:31:07,807 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 856 transitions. [2024-11-18 19:31:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-18 19:31:07,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:31:07,813 INFO L215 NwaCegarLoop]: trace histogram [70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:31:07,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:31:07,813 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:31:07,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:31:07,814 INFO L85 PathProgramCache]: Analyzing trace with hash 549640178, now seen corresponding path program 1 times [2024-11-18 19:31:07,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:31:07,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180944749] [2024-11-18 19:31:07,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:31:07,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:31:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat