./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-56.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-56.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 0099f1ae0b0455065bfe0355de19f44eec2ea7eff30cffa8e7ce9d1f799b3467 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:33:34,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:33:34,683 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:33:34,693 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:33:34,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:33:34,735 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:33:34,736 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:33:34,736 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:33:34,737 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:33:34,737 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:33:34,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:33:34,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:33:34,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:33:34,740 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:33:34,743 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:33:34,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:33:34,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:33:34,743 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:33:34,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:33:34,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:33:34,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:33:34,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:33:34,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:33:34,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:33:34,746 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:33:34,746 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:33:34,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:33:34,747 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:33:34,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:33:34,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:33:34,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:33:34,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:33:34,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:33:34,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:33:34,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:33:34,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:33:34,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:33:34,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:33:34,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:33:34,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:33:34,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:33:34,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:33:34,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0099f1ae0b0455065bfe0355de19f44eec2ea7eff30cffa8e7ce9d1f799b3467 [2024-11-18 19:33:35,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:33:35,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:33:35,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:33:35,056 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:33:35,057 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:33:35,058 INFO L431 ainManager$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-56.i [2024-11-18 19:33:36,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:33:36,704 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:33:36,705 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-56.i [2024-11-18 19:33:36,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30e6b88bc/e70c162bf7354817bcff57e742089d1c/FLAGf953ac359 [2024-11-18 19:33:36,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30e6b88bc/e70c162bf7354817bcff57e742089d1c [2024-11-18 19:33:36,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:33:36,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:33:36,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:33:36,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:33:36,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:33:36,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:36" (1/1) ... [2024-11-18 19:33:36,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b15b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:36, skipping insertion in model container [2024-11-18 19:33:36,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:36" (1/1) ... [2024-11-18 19:33:36,795 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:33:36,969 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-56.i[916,929] [2024-11-18 19:33:37,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:33:37,163 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:33:37,174 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-56.i[916,929] [2024-11-18 19:33:37,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:33:37,267 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:33:37,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37 WrapperNode [2024-11-18 19:33:37,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:33:37,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:33:37,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:33:37,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:33:37,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,355 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 524 [2024-11-18 19:33:37,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:33:37,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:33:37,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:33:37,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:33:37,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,385 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,430 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 19:33:37,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,449 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:33:37,480 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:33:37,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:33:37,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:33:37,481 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (1/1) ... [2024-11-18 19:33:37,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:33:37,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:33:37,516 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 19:33:37,523 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 19:33:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:33:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:33:37,571 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:33:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:33:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:33:37,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:33:37,709 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:33:37,711 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:33:38,571 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-18 19:33:38,571 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:33:38,594 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:33:38,594 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:33:38,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:38 BoogieIcfgContainer [2024-11-18 19:33:38,595 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:33:38,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:33:38,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:33:38,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:33:38,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:33:36" (1/3) ... [2024-11-18 19:33:38,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15836980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:38, skipping insertion in model container [2024-11-18 19:33:38,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:37" (2/3) ... [2024-11-18 19:33:38,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15836980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:38, skipping insertion in model container [2024-11-18 19:33:38,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:38" (3/3) ... [2024-11-18 19:33:38,605 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-56.i [2024-11-18 19:33:38,623 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:33:38,623 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:33:38,701 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:33:38,708 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;@428c6625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:33:38,709 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:33:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 138 states have (on average 1.4927536231884058) internal successors, (206), 139 states have internal predecessors, (206), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 19:33:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-18 19:33:38,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:38,744 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:38,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:38,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1192032271, now seen corresponding path program 1 times [2024-11-18 19:33:38,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:38,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11177885] [2024-11-18 19:33:38,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:38,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2024-11-18 19:33:39,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:39,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11177885] [2024-11-18 19:33:39,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11177885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:33:39,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224630298] [2024-11-18 19:33:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:39,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:33:39,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:33:39,454 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 19:33:39,456 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 19:33:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:39,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:33:39,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:33:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2024-11-18 19:33:39,905 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:33:39,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224630298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:33:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:33:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:33:39,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111072865] [2024-11-18 19:33:39,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:33:39,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:33:39,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:39,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:33:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:33:39,953 INFO L87 Difference]: Start difference. First operand has 221 states, 138 states have (on average 1.4927536231884058) internal successors, (206), 139 states have internal predecessors, (206), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2024-11-18 19:33:40,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:40,037 INFO L93 Difference]: Finished difference Result 435 states and 806 transitions. [2024-11-18 19:33:40,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:33:40,040 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) Word has length 498 [2024-11-18 19:33:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:40,052 INFO L225 Difference]: With dead ends: 435 [2024-11-18 19:33:40,053 INFO L226 Difference]: Without dead ends: 217 [2024-11-18 19:33:40,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 499 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 19:33:40,063 INFO L432 NwaCegarLoop]: 359 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, 359 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 19:33:40,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:33:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-18 19:33:40,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-11-18 19:33:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 135 states have (on average 1.474074074074074) internal successors, (199), 135 states have internal predecessors, (199), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 19:33:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 359 transitions. [2024-11-18 19:33:40,159 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 359 transitions. Word has length 498 [2024-11-18 19:33:40,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:40,162 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 359 transitions. [2024-11-18 19:33:40,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2024-11-18 19:33:40,163 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 359 transitions. [2024-11-18 19:33:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-18 19:33:40,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:40,175 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:40,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 19:33:40,379 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 19:33:40,380 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:40,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:40,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1337389321, now seen corresponding path program 1 times [2024-11-18 19:33:40,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:40,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88639083] [2024-11-18 19:33:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:40,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2024-11-18 19:33:40,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:40,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88639083] [2024-11-18 19:33:40,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88639083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:33:40,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:33:40,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:33:40,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106972394] [2024-11-18 19:33:40,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:33:40,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:33:40,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:40,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:33:40,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:33:40,819 INFO L87 Difference]: Start difference. First operand 217 states and 359 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:33:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:40,951 INFO L93 Difference]: Finished difference Result 556 states and 923 transitions. [2024-11-18 19:33:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:33:40,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 498 [2024-11-18 19:33:40,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:40,962 INFO L225 Difference]: With dead ends: 556 [2024-11-18 19:33:40,962 INFO L226 Difference]: Without dead ends: 342 [2024-11-18 19:33:40,964 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 19:33:40,965 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 196 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:40,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 814 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:33:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-18 19:33:41,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 339. [2024-11-18 19:33:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 218 states have (on average 1.4770642201834863) internal successors, (322), 219 states have internal predecessors, (322), 118 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-18 19:33:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 558 transitions. [2024-11-18 19:33:41,035 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 558 transitions. Word has length 498 [2024-11-18 19:33:41,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:41,038 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 558 transitions. [2024-11-18 19:33:41,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:33:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 558 transitions. [2024-11-18 19:33:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-18 19:33:41,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:41,045 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:41,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:33:41,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:41,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:41,047 INFO L85 PathProgramCache]: Analyzing trace with hash -512198781, now seen corresponding path program 1 times [2024-11-18 19:33:41,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:41,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757794639] [2024-11-18 19:33:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:41,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2024-11-18 19:33:41,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:41,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757794639] [2024-11-18 19:33:41,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757794639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:33:41,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:33:41,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:33:41,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198843623] [2024-11-18 19:33:41,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:33:41,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:33:41,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:41,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:33:41,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:33:41,394 INFO L87 Difference]: Start difference. First operand 339 states and 558 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:33:41,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:41,488 INFO L93 Difference]: Finished difference Result 682 states and 1118 transitions. [2024-11-18 19:33:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:33:41,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 499 [2024-11-18 19:33:41,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:41,497 INFO L225 Difference]: With dead ends: 682 [2024-11-18 19:33:41,499 INFO L226 Difference]: Without dead ends: 346 [2024-11-18 19:33:41,501 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 19:33:41,502 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 205 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:41,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 731 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:33:41,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-18 19:33:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 264. [2024-11-18 19:33:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 181 states have (on average 1.4917127071823204) internal successors, (270), 181 states have internal predecessors, (270), 80 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-18 19:33:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 430 transitions. [2024-11-18 19:33:41,536 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 430 transitions. Word has length 499 [2024-11-18 19:33:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:41,538 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 430 transitions. [2024-11-18 19:33:41,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:33:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 430 transitions. [2024-11-18 19:33:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-18 19:33:41,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:41,547 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:41,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:33:41,547 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:41,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:41,549 INFO L85 PathProgramCache]: Analyzing trace with hash -35033079, now seen corresponding path program 1 times [2024-11-18 19:33:41,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:41,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048735440] [2024-11-18 19:33:41,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:41,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2024-11-18 19:33:42,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:42,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048735440] [2024-11-18 19:33:42,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048735440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:33:42,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:33:42,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:33:42,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388773891] [2024-11-18 19:33:42,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:33:42,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:33:42,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:33:42,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:33:42,524 INFO L87 Difference]: Start difference. First operand 264 states and 430 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2024-11-18 19:33:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:43,621 INFO L93 Difference]: Finished difference Result 993 states and 1633 transitions. [2024-11-18 19:33:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 19:33:43,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 499 [2024-11-18 19:33:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:43,628 INFO L225 Difference]: With dead ends: 993 [2024-11-18 19:33:43,628 INFO L226 Difference]: Without dead ends: 732 [2024-11-18 19:33:43,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 19:33:43,631 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 1260 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:43,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 1098 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 19:33:43,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2024-11-18 19:33:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 458. [2024-11-18 19:33:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 350 states have (on average 1.5685714285714285) internal successors, (549), 351 states have internal predecessors, (549), 104 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-18 19:33:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 757 transitions. [2024-11-18 19:33:43,673 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 757 transitions. Word has length 499 [2024-11-18 19:33:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:43,674 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 757 transitions. [2024-11-18 19:33:43,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2024-11-18 19:33:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 757 transitions. [2024-11-18 19:33:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-18 19:33:43,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:43,679 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:43,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:33:43,679 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:43,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:43,680 INFO L85 PathProgramCache]: Analyzing trace with hash -388121461, now seen corresponding path program 1 times [2024-11-18 19:33:43,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:43,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404578209] [2024-11-18 19:33:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:43,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:44,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2024-11-18 19:33:44,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:44,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404578209] [2024-11-18 19:33:44,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404578209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:33:44,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:33:44,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:33:44,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887054552] [2024-11-18 19:33:44,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:33:44,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:33:44,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:44,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:33:44,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:33:44,217 INFO L87 Difference]: Start difference. First operand 458 states and 757 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:33:44,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:44,701 INFO L93 Difference]: Finished difference Result 1386 states and 2282 transitions. [2024-11-18 19:33:44,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:33:44,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 499 [2024-11-18 19:33:44,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:44,711 INFO L225 Difference]: With dead ends: 1386 [2024-11-18 19:33:44,711 INFO L226 Difference]: Without dead ends: 931 [2024-11-18 19:33:44,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:33:44,714 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 395 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:44,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1452 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 19:33:44,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-11-18 19:33:44,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 622. [2024-11-18 19:33:44,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 486 states have (on average 1.5761316872427984) internal successors, (766), 488 states have internal predecessors, (766), 130 states have call successors, (130), 5 states have call predecessors, (130), 5 states have return successors, (130), 128 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-18 19:33:44,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1026 transitions. [2024-11-18 19:33:44,793 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1026 transitions. Word has length 499 [2024-11-18 19:33:44,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:44,797 INFO L471 AbstractCegarLoop]: Abstraction has 622 states and 1026 transitions. [2024-11-18 19:33:44,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:33:44,797 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1026 transitions. [2024-11-18 19:33:44,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-18 19:33:44,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:44,802 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:44,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:33:44,803 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:44,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:44,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1661266381, now seen corresponding path program 1 times [2024-11-18 19:33:44,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:44,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070674476] [2024-11-18 19:33:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:44,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2024-11-18 19:33:45,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:45,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070674476] [2024-11-18 19:33:45,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070674476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:33:45,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:33:45,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 19:33:45,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789244852] [2024-11-18 19:33:45,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:33:45,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 19:33:45,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:45,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 19:33:45,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:33:45,687 INFO L87 Difference]: Start difference. First operand 622 states and 1026 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2024-11-18 19:33:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:46,637 INFO L93 Difference]: Finished difference Result 2032 states and 3358 transitions. [2024-11-18 19:33:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 19:33:46,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) Word has length 499 [2024-11-18 19:33:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:46,647 INFO L225 Difference]: With dead ends: 2032 [2024-11-18 19:33:46,648 INFO L226 Difference]: Without dead ends: 1413 [2024-11-18 19:33:46,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-18 19:33:46,652 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 1115 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:46,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1184 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 19:33:46,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2024-11-18 19:33:46,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1008. [2024-11-18 19:33:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 820 states have (on average 1.6085365853658538) internal successors, (1319), 824 states have internal predecessors, (1319), 180 states have call successors, (180), 7 states have call predecessors, (180), 7 states have return successors, (180), 176 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-18 19:33:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1679 transitions. [2024-11-18 19:33:46,759 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1679 transitions. Word has length 499 [2024-11-18 19:33:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:46,760 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1679 transitions. [2024-11-18 19:33:46,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 3 states have call predecessors, (80), 3 states have call successors, (80) [2024-11-18 19:33:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1679 transitions. [2024-11-18 19:33:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-11-18 19:33:46,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:46,766 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:46,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:33:46,766 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:46,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:46,767 INFO L85 PathProgramCache]: Analyzing trace with hash 401263690, now seen corresponding path program 1 times [2024-11-18 19:33:46,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:46,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702605419] [2024-11-18 19:33:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:46,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2024-11-18 19:33:48,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:48,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702605419] [2024-11-18 19:33:48,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702605419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:33:48,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:33:48,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:33:48,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118423292] [2024-11-18 19:33:48,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:33:48,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:33:48,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:48,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:33:48,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:33:48,131 INFO L87 Difference]: Start difference. First operand 1008 states and 1679 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:33:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:48,371 INFO L93 Difference]: Finished difference Result 2207 states and 3627 transitions. [2024-11-18 19:33:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:33:48,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 500 [2024-11-18 19:33:48,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:48,381 INFO L225 Difference]: With dead ends: 2207 [2024-11-18 19:33:48,382 INFO L226 Difference]: Without dead ends: 1202 [2024-11-18 19:33:48,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:33:48,387 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 50 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:48,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1415 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:33:48,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2024-11-18 19:33:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1143. [2024-11-18 19:33:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 930 states have (on average 1.5795698924731183) internal successors, (1469), 939 states have internal predecessors, (1469), 200 states have call successors, (200), 12 states have call predecessors, (200), 12 states have return successors, (200), 191 states have call predecessors, (200), 200 states have call successors, (200) [2024-11-18 19:33:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1869 transitions. [2024-11-18 19:33:48,541 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1869 transitions. Word has length 500 [2024-11-18 19:33:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:48,543 INFO L471 AbstractCegarLoop]: Abstraction has 1143 states and 1869 transitions. [2024-11-18 19:33:48,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2024-11-18 19:33:48,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1869 transitions. [2024-11-18 19:33:48,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2024-11-18 19:33:48,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:48,552 INFO L215 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:48,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:33:48,552 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:48,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:48,553 INFO L85 PathProgramCache]: Analyzing trace with hash -408082936, now seen corresponding path program 1 times [2024-11-18 19:33:48,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:48,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103075656] [2024-11-18 19:33:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:48,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat