./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-51.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-51.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 19040c859ca30831fc6cd7ac759a469fd491f693781bcf5be67393e1fb0ba0e1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:32:42,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:32:42,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:32:42,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:32:42,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:32:42,803 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:32:42,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:32:42,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:32:42,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:32:42,807 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:32:42,808 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:32:42,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:32:42,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:32:42,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:32:42,810 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:32:42,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:32:42,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:32:42,811 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:32:42,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:32:42,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:32:42,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:32:42,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:32:42,815 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:32:42,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:32:42,818 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:32:42,818 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:32:42,818 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:32:42,818 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:32:42,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:32:42,819 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:32:42,819 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:32:42,819 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:32:42,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:32:42,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:32:42,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:32:42,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:32:42,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:32:42,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:32:42,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:32:42,820 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:32:42,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:32:42,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:32:42,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 19040c859ca30831fc6cd7ac759a469fd491f693781bcf5be67393e1fb0ba0e1 [2024-11-18 19:32:43,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:32:43,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:32:43,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:32:43,112 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:32:43,112 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:32:43,113 INFO L431 ainManager$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-51.i [2024-11-18 19:32:44,418 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:32:44,641 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:32:44,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-51.i [2024-11-18 19:32:44,651 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5902a31/8cb10cfeb8974cd899376e1d65dc109c/FLAG09d86e7ed [2024-11-18 19:32:44,996 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5902a31/8cb10cfeb8974cd899376e1d65dc109c [2024-11-18 19:32:44,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:32:44,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:32:45,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:32:45,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:32:45,005 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:32:45,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:44" (1/1) ... [2024-11-18 19:32:45,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c089c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45, skipping insertion in model container [2024-11-18 19:32:45,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:32:44" (1/1) ... [2024-11-18 19:32:45,045 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:32:45,201 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-51.i[916,929] [2024-11-18 19:32:45,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:32:45,338 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:32:45,348 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-51.i[916,929] [2024-11-18 19:32:45,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:32:45,427 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:32:45,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45 WrapperNode [2024-11-18 19:32:45,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:32:45,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:32:45,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:32:45,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:32:45,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,489 INFO L138 Inliner]: procedures = 26, calls = 88, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 513 [2024-11-18 19:32:45,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:32:45,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:32:45,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:32:45,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:32:45,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,547 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 19:32:45,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:32:45,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:32:45,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:32:45,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:32:45,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (1/1) ... [2024-11-18 19:32:45,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:32:45,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:32:45,636 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 19:32:45,640 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 19:32:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:32:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:32:45,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:32:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:32:45,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:32:45,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:32:45,861 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:32:45,864 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:32:46,476 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-18 19:32:46,477 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:32:46,500 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:32:46,501 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:32:46,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:46 BoogieIcfgContainer [2024-11-18 19:32:46,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:32:46,504 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:32:46,504 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:32:46,507 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:32:46,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:32:44" (1/3) ... [2024-11-18 19:32:46,508 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f74ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:46, skipping insertion in model container [2024-11-18 19:32:46,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:32:45" (2/3) ... [2024-11-18 19:32:46,509 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f74ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:32:46, skipping insertion in model container [2024-11-18 19:32:46,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:32:46" (3/3) ... [2024-11-18 19:32:46,511 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-51.i [2024-11-18 19:32:46,525 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:32:46,526 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:32:46,613 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:32:46,620 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;@440e00b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:32:46,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:32:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 222 states, 144 states have (on average 1.5555555555555556) internal successors, (224), 145 states have internal predecessors, (224), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-18 19:32:46,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-18 19:32:46,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:46,661 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:46,662 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:46,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:46,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1808131749, now seen corresponding path program 1 times [2024-11-18 19:32:46,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:46,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607016507] [2024-11-18 19:32:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:46,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2024-11-18 19:32:47,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:47,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607016507] [2024-11-18 19:32:47,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607016507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:32:47,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879196261] [2024-11-18 19:32:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:47,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:32:47,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:32:47,191 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 19:32:47,193 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 19:32:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:47,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:32:47,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:32:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 10952 trivial. 0 not checked. [2024-11-18 19:32:47,547 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:32:47,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879196261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:47,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:32:47,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:32:47,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156698886] [2024-11-18 19:32:47,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:47,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:32:47,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:47,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:32:47,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:32:47,603 INFO L87 Difference]: Start difference. First operand has 222 states, 144 states have (on average 1.5555555555555556) internal successors, (224), 145 states have internal predecessors, (224), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) 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, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-18 19:32:47,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:47,649 INFO L93 Difference]: Finished difference Result 437 states and 817 transitions. [2024-11-18 19:32:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:32:47,651 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, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) Word has length 473 [2024-11-18 19:32:47,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:47,664 INFO L225 Difference]: With dead ends: 437 [2024-11-18 19:32:47,664 INFO L226 Difference]: Without dead ends: 218 [2024-11-18 19:32:47,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 474 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 19:32:47,677 INFO L432 NwaCegarLoop]: 365 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, 365 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 19:32:47,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:32:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-18 19:32:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2024-11-18 19:32:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 141 states have (on average 1.524822695035461) internal successors, (215), 141 states have internal predecessors, (215), 75 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-18 19:32:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 365 transitions. [2024-11-18 19:32:47,748 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 365 transitions. Word has length 473 [2024-11-18 19:32:47,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:47,750 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 365 transitions. [2024-11-18 19:32:47,750 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, (75), 2 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-18 19:32:47,751 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 365 transitions. [2024-11-18 19:32:47,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-18 19:32:47,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:47,761 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:47,778 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 19:32:47,965 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 19:32:47,966 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:47,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:47,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1309079903, now seen corresponding path program 1 times [2024-11-18 19:32:47,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:47,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97542889] [2024-11-18 19:32:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:47,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:32:48,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:48,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97542889] [2024-11-18 19:32:48,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97542889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:48,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:48,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:32:48,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24766586] [2024-11-18 19:32:48,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:48,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:32:48,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:48,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:32:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:32:48,261 INFO L87 Difference]: Start difference. First operand 218 states and 365 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:48,344 INFO L93 Difference]: Finished difference Result 588 states and 989 transitions. [2024-11-18 19:32:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:32:48,345 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 473 [2024-11-18 19:32:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:48,351 INFO L225 Difference]: With dead ends: 588 [2024-11-18 19:32:48,351 INFO L226 Difference]: Without dead ends: 373 [2024-11-18 19:32:48,352 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 19:32:48,353 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 255 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:48,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 710 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:32:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-18 19:32:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 370. [2024-11-18 19:32:48,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 254 states have (on average 1.5551181102362204) internal successors, (395), 255 states have internal predecessors, (395), 113 states have call successors, (113), 2 states have call predecessors, (113), 2 states have return successors, (113), 112 states have call predecessors, (113), 113 states have call successors, (113) [2024-11-18 19:32:48,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 621 transitions. [2024-11-18 19:32:48,415 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 621 transitions. Word has length 473 [2024-11-18 19:32:48,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:48,420 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 621 transitions. [2024-11-18 19:32:48,420 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 621 transitions. [2024-11-18 19:32:48,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-18 19:32:48,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:48,427 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:48,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:32:48,427 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:48,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:48,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1080246945, now seen corresponding path program 1 times [2024-11-18 19:32:48,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:48,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669736610] [2024-11-18 19:32:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:48,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:32:48,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:48,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669736610] [2024-11-18 19:32:48,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669736610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:48,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:48,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:32:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029119121] [2024-11-18 19:32:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:48,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:32:48,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:48,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:32:48,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:32:48,658 INFO L87 Difference]: Start difference. First operand 370 states and 621 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:48,740 INFO L93 Difference]: Finished difference Result 1100 states and 1849 transitions. [2024-11-18 19:32:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:32:48,741 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 473 [2024-11-18 19:32:48,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:48,752 INFO L225 Difference]: With dead ends: 1100 [2024-11-18 19:32:48,752 INFO L226 Difference]: Without dead ends: 733 [2024-11-18 19:32:48,754 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 19:32:48,755 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 339 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:48,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 758 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:32:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-11-18 19:32:48,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 731. [2024-11-18 19:32:48,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 500 states have (on average 1.544) internal successors, (772), 502 states have internal predecessors, (772), 226 states have call successors, (226), 4 states have call predecessors, (226), 4 states have return successors, (226), 224 states have call predecessors, (226), 226 states have call successors, (226) [2024-11-18 19:32:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1224 transitions. [2024-11-18 19:32:48,863 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1224 transitions. Word has length 473 [2024-11-18 19:32:48,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:48,867 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1224 transitions. [2024-11-18 19:32:48,867 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1224 transitions. [2024-11-18 19:32:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-18 19:32:48,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:48,875 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:48,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:32:48,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:48,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash -466453409, now seen corresponding path program 1 times [2024-11-18 19:32:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:48,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711802902] [2024-11-18 19:32:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:48,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:32:49,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:49,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711802902] [2024-11-18 19:32:49,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711802902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:49,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:49,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 19:32:49,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950992400] [2024-11-18 19:32:49,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:49,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 19:32:49,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 19:32:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 19:32:49,337 INFO L87 Difference]: Start difference. First operand 731 states and 1224 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:50,425 INFO L93 Difference]: Finished difference Result 3787 states and 6337 transitions. [2024-11-18 19:32:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 19:32:50,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 473 [2024-11-18 19:32:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:50,447 INFO L225 Difference]: With dead ends: 3787 [2024-11-18 19:32:50,448 INFO L226 Difference]: Without dead ends: 3059 [2024-11-18 19:32:50,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:32:50,454 INFO L432 NwaCegarLoop]: 754 mSDtfsCounter, 929 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:50,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 2933 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 19:32:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2024-11-18 19:32:50,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 3031. [2024-11-18 19:32:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 2134 states have (on average 1.5538894095595126) internal successors, (3316), 2150 states have internal predecessors, (3316), 876 states have call successors, (876), 20 states have call predecessors, (876), 20 states have return successors, (876), 860 states have call predecessors, (876), 876 states have call successors, (876) [2024-11-18 19:32:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 5068 transitions. [2024-11-18 19:32:50,816 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 5068 transitions. Word has length 473 [2024-11-18 19:32:50,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:50,817 INFO L471 AbstractCegarLoop]: Abstraction has 3031 states and 5068 transitions. [2024-11-18 19:32:50,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:50,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 5068 transitions. [2024-11-18 19:32:50,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2024-11-18 19:32:50,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:50,824 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:50,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 19:32:50,824 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:50,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:50,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1363846687, now seen corresponding path program 1 times [2024-11-18 19:32:50,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:50,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359141059] [2024-11-18 19:32:50,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:50,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:32:51,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:51,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359141059] [2024-11-18 19:32:51,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359141059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:51,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:51,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:32:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597576062] [2024-11-18 19:32:51,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:51,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:32:51,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:51,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:32:51,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:32:51,245 INFO L87 Difference]: Start difference. First operand 3031 states and 5068 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:52,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:52,490 INFO L93 Difference]: Finished difference Result 11277 states and 18744 transitions. [2024-11-18 19:32:52,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 19:32:52,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 473 [2024-11-18 19:32:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:52,547 INFO L225 Difference]: With dead ends: 11277 [2024-11-18 19:32:52,547 INFO L226 Difference]: Without dead ends: 8249 [2024-11-18 19:32:52,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:32:52,561 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 739 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:52,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1541 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 19:32:52,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8249 states. [2024-11-18 19:32:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8249 to 6063. [2024-11-18 19:32:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6063 states, 4228 states have (on average 1.5335856196783348) internal successors, (6484), 4266 states have internal predecessors, (6484), 1790 states have call successors, (1790), 44 states have call predecessors, (1790), 44 states have return successors, (1790), 1752 states have call predecessors, (1790), 1790 states have call successors, (1790) [2024-11-18 19:32:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6063 states to 6063 states and 10064 transitions. [2024-11-18 19:32:53,227 INFO L78 Accepts]: Start accepts. Automaton has 6063 states and 10064 transitions. Word has length 473 [2024-11-18 19:32:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:53,228 INFO L471 AbstractCegarLoop]: Abstraction has 6063 states and 10064 transitions. [2024-11-18 19:32:53,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 6063 states and 10064 transitions. [2024-11-18 19:32:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-18 19:32:53,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:53,235 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:53,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 19:32:53,235 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:53,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:53,236 INFO L85 PathProgramCache]: Analyzing trace with hash 336064956, now seen corresponding path program 1 times [2024-11-18 19:32:53,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:53,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757835571] [2024-11-18 19:32:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:53,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:32:53,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:53,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757835571] [2024-11-18 19:32:53,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757835571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:53,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:53,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:32:53,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579658378] [2024-11-18 19:32:53,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:53,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:32:53,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:53,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:32:53,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:32:53,374 INFO L87 Difference]: Start difference. First operand 6063 states and 10064 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:53,896 INFO L93 Difference]: Finished difference Result 13261 states and 21892 transitions. [2024-11-18 19:32:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:32:53,897 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 474 [2024-11-18 19:32:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:53,941 INFO L225 Difference]: With dead ends: 13261 [2024-11-18 19:32:53,942 INFO L226 Difference]: Without dead ends: 7201 [2024-11-18 19:32:53,961 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 19:32:53,962 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 241 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:53,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 717 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:32:53,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7201 states. [2024-11-18 19:32:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7201 to 7177. [2024-11-18 19:32:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7177 states, 4892 states have (on average 1.5061324611610794) internal successors, (7368), 4939 states have internal predecessors, (7368), 2208 states have call successors, (2208), 76 states have call predecessors, (2208), 76 states have return successors, (2208), 2161 states have call predecessors, (2208), 2208 states have call successors, (2208) [2024-11-18 19:32:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7177 states to 7177 states and 11784 transitions. [2024-11-18 19:32:54,626 INFO L78 Accepts]: Start accepts. Automaton has 7177 states and 11784 transitions. Word has length 474 [2024-11-18 19:32:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:54,628 INFO L471 AbstractCegarLoop]: Abstraction has 7177 states and 11784 transitions. [2024-11-18 19:32:54,628 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:54,628 INFO L276 IsEmpty]: Start isEmpty. Operand 7177 states and 11784 transitions. [2024-11-18 19:32:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-11-18 19:32:54,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:54,637 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:54,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 19:32:54,637 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:54,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:54,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1413602046, now seen corresponding path program 1 times [2024-11-18 19:32:54,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:54,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117389146] [2024-11-18 19:32:54,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:54,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:32:55,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117389146] [2024-11-18 19:32:55,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117389146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:55,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:55,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:32:55,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528996218] [2024-11-18 19:32:55,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:55,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:32:55,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:55,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:32:55,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:32:55,132 INFO L87 Difference]: Start difference. First operand 7177 states and 11784 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:55,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:55,871 INFO L93 Difference]: Finished difference Result 16986 states and 28056 transitions. [2024-11-18 19:32:55,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:32:55,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 474 [2024-11-18 19:32:55,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:55,957 INFO L225 Difference]: With dead ends: 16986 [2024-11-18 19:32:55,957 INFO L226 Difference]: Without dead ends: 9866 [2024-11-18 19:32:55,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:32:55,987 INFO L432 NwaCegarLoop]: 362 mSDtfsCounter, 326 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:55,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1071 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:32:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9866 states. [2024-11-18 19:32:56,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9866 to 9028. [2024-11-18 19:32:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9028 states, 6698 states have (on average 1.5610630038817557) internal successors, (10456), 6744 states have internal predecessors, (10456), 2249 states have call successors, (2249), 80 states have call predecessors, (2249), 80 states have return successors, (2249), 2203 states have call predecessors, (2249), 2249 states have call successors, (2249) [2024-11-18 19:32:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9028 states to 9028 states and 14954 transitions. [2024-11-18 19:32:56,641 INFO L78 Accepts]: Start accepts. Automaton has 9028 states and 14954 transitions. Word has length 474 [2024-11-18 19:32:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:56,642 INFO L471 AbstractCegarLoop]: Abstraction has 9028 states and 14954 transitions. [2024-11-18 19:32:56,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 9028 states and 14954 transitions. [2024-11-18 19:32:56,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-18 19:32:56,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:56,649 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:56,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 19:32:56,649 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:56,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1461445559, now seen corresponding path program 1 times [2024-11-18 19:32:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:56,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238365230] [2024-11-18 19:32:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:56,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:32:57,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:57,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238365230] [2024-11-18 19:32:57,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238365230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:57,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:57,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:32:57,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121296575] [2024-11-18 19:32:57,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:57,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:32:57,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:57,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:32:57,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:32:57,096 INFO L87 Difference]: Start difference. First operand 9028 states and 14954 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:32:57,774 INFO L93 Difference]: Finished difference Result 20266 states and 33361 transitions. [2024-11-18 19:32:57,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:32:57,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 475 [2024-11-18 19:32:57,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:32:57,836 INFO L225 Difference]: With dead ends: 20266 [2024-11-18 19:32:57,836 INFO L226 Difference]: Without dead ends: 12568 [2024-11-18 19:32:57,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:32:57,868 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 232 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:32:57,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1040 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:32:57,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12568 states. [2024-11-18 19:32:58,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12568 to 12554. [2024-11-18 19:32:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12554 states, 9227 states have (on average 1.5483905928254038) internal successors, (14287), 9297 states have internal predecessors, (14287), 3185 states have call successors, (3185), 141 states have call predecessors, (3185), 141 states have return successors, (3185), 3115 states have call predecessors, (3185), 3185 states have call successors, (3185) [2024-11-18 19:32:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12554 states to 12554 states and 20657 transitions. [2024-11-18 19:32:59,020 INFO L78 Accepts]: Start accepts. Automaton has 12554 states and 20657 transitions. Word has length 475 [2024-11-18 19:32:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:32:59,021 INFO L471 AbstractCegarLoop]: Abstraction has 12554 states and 20657 transitions. [2024-11-18 19:32:59,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:32:59,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12554 states and 20657 transitions. [2024-11-18 19:32:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-18 19:32:59,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:32:59,028 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:59,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 19:32:59,029 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:32:59,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:32:59,029 INFO L85 PathProgramCache]: Analyzing trace with hash 589538439, now seen corresponding path program 1 times [2024-11-18 19:32:59,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:32:59,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688626003] [2024-11-18 19:32:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:32:59,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:32:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:32:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:32:59,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:32:59,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688626003] [2024-11-18 19:32:59,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688626003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:32:59,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:32:59,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 19:32:59,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530012306] [2024-11-18 19:32:59,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:32:59,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 19:32:59,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:32:59,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 19:32:59,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:32:59,622 INFO L87 Difference]: Start difference. First operand 12554 states and 20657 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:33:01,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:01,104 INFO L93 Difference]: Finished difference Result 33572 states and 54820 transitions. [2024-11-18 19:33:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 19:33:01,105 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 475 [2024-11-18 19:33:01,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:01,218 INFO L225 Difference]: With dead ends: 33572 [2024-11-18 19:33:01,218 INFO L226 Difference]: Without dead ends: 23254 [2024-11-18 19:33:01,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 19:33:01,272 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 337 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:01,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1290 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:33:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23254 states. [2024-11-18 19:33:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23254 to 22870. [2024-11-18 19:33:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22870 states, 16297 states have (on average 1.5243909922071548) internal successors, (24843), 16437 states have internal predecessors, (24843), 6295 states have call successors, (6295), 277 states have call predecessors, (6295), 277 states have return successors, (6295), 6155 states have call predecessors, (6295), 6295 states have call successors, (6295) [2024-11-18 19:33:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22870 states to 22870 states and 37433 transitions. [2024-11-18 19:33:03,231 INFO L78 Accepts]: Start accepts. Automaton has 22870 states and 37433 transitions. Word has length 475 [2024-11-18 19:33:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:03,232 INFO L471 AbstractCegarLoop]: Abstraction has 22870 states and 37433 transitions. [2024-11-18 19:33:03,233 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, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:33:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 22870 states and 37433 transitions. [2024-11-18 19:33:03,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-18 19:33:03,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:03,242 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:03,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 19:33:03,243 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:03,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:03,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1557801415, now seen corresponding path program 1 times [2024-11-18 19:33:03,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:03,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089023735] [2024-11-18 19:33:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:03,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:33:03,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:03,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089023735] [2024-11-18 19:33:03,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089023735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:33:03,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:33:03,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:33:03,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497891070] [2024-11-18 19:33:03,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:33:03,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:33:03,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:03,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:33:03,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:33:03,754 INFO L87 Difference]: Start difference. First operand 22870 states and 37433 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-18 19:33:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:06,527 INFO L93 Difference]: Finished difference Result 64138 states and 104691 transitions. [2024-11-18 19:33:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:33:06,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 476 [2024-11-18 19:33:06,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:06,738 INFO L225 Difference]: With dead ends: 64138 [2024-11-18 19:33:06,738 INFO L226 Difference]: Without dead ends: 43504 [2024-11-18 19:33:06,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:33:06,795 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 332 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:06,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1054 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:33:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43504 states. [2024-11-18 19:33:10,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43504 to 43502. [2024-11-18 19:33:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43502 states, 30437 states have (on average 1.5073430364359168) internal successors, (45879), 30717 states have internal predecessors, (45879), 12515 states have call successors, (12515), 549 states have call predecessors, (12515), 549 states have return successors, (12515), 12235 states have call predecessors, (12515), 12515 states have call successors, (12515) [2024-11-18 19:33:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43502 states to 43502 states and 70909 transitions. [2024-11-18 19:33:10,821 INFO L78 Accepts]: Start accepts. Automaton has 43502 states and 70909 transitions. Word has length 476 [2024-11-18 19:33:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:10,821 INFO L471 AbstractCegarLoop]: Abstraction has 43502 states and 70909 transitions. [2024-11-18 19:33:10,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2024-11-18 19:33:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 43502 states and 70909 transitions. [2024-11-18 19:33:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2024-11-18 19:33:10,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:10,829 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:10,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 19:33:10,830 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:10,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:10,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1950828425, now seen corresponding path program 1 times [2024-11-18 19:33:10,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:10,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542517680] [2024-11-18 19:33:10,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:10,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:33:11,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:11,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542517680] [2024-11-18 19:33:11,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542517680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:33:11,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:33:11,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:33:11,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763517839] [2024-11-18 19:33:11,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:33:11,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:33:11,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:11,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:33:11,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:33:11,116 INFO L87 Difference]: Start difference. First operand 43502 states and 70909 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:33:14,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:14,024 INFO L93 Difference]: Finished difference Result 85528 states and 139306 transitions. [2024-11-18 19:33:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 19:33:14,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) Word has length 476 [2024-11-18 19:33:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:14,242 INFO L225 Difference]: With dead ends: 85528 [2024-11-18 19:33:14,242 INFO L226 Difference]: Without dead ends: 44262 [2024-11-18 19:33:14,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:33:14,353 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 17 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:14,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 733 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:33:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44262 states. [2024-11-18 19:33:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44262 to 43502. [2024-11-18 19:33:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43502 states, 30437 states have (on average 1.4973551926931037) internal successors, (45575), 30717 states have internal predecessors, (45575), 12515 states have call successors, (12515), 549 states have call predecessors, (12515), 549 states have return successors, (12515), 12235 states have call predecessors, (12515), 12515 states have call successors, (12515) [2024-11-18 19:33:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43502 states to 43502 states and 70605 transitions. [2024-11-18 19:33:18,337 INFO L78 Accepts]: Start accepts. Automaton has 43502 states and 70605 transitions. Word has length 476 [2024-11-18 19:33:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:18,338 INFO L471 AbstractCegarLoop]: Abstraction has 43502 states and 70605 transitions. [2024-11-18 19:33:18,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75) [2024-11-18 19:33:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 43502 states and 70605 transitions. [2024-11-18 19:33:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-11-18 19:33:18,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:18,346 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:18,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 19:33:18,346 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:18,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:18,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1763458364, now seen corresponding path program 1 times [2024-11-18 19:33:18,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:18,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805458833] [2024-11-18 19:33:18,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:18,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 24 proven. 198 refuted. 0 times theorem prover too weak. 10878 trivial. 0 not checked. [2024-11-18 19:33:18,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:18,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805458833] [2024-11-18 19:33:18,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805458833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:33:18,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876165283] [2024-11-18 19:33:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:18,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:33:18,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:33:18,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:33:18,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 19:33:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:18,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 19:33:18,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:33:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 2202 proven. 198 refuted. 0 times theorem prover too weak. 8700 trivial. 0 not checked. [2024-11-18 19:33:19,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:33:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 24 proven. 198 refuted. 0 times theorem prover too weak. 10878 trivial. 0 not checked. [2024-11-18 19:33:19,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876165283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:33:19,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:33:19,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 19:33:19,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486968340] [2024-11-18 19:33:19,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:33:19,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 19:33:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 19:33:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 19:33:19,943 INFO L87 Difference]: Start difference. First operand 43502 states and 70605 transitions. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 3 states have call successors, (207), 2 states have call predecessors, (207), 4 states have return successors, (208), 3 states have call predecessors, (208), 3 states have call successors, (208) [2024-11-18 19:33:23,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:23,298 INFO L93 Difference]: Finished difference Result 66454 states and 106095 transitions. [2024-11-18 19:33:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 19:33:23,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 3 states have call successors, (207), 2 states have call predecessors, (207), 4 states have return successors, (208), 3 states have call predecessors, (208), 3 states have call successors, (208) Word has length 477 [2024-11-18 19:33:23,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:23,768 INFO L225 Difference]: With dead ends: 66454 [2024-11-18 19:33:23,768 INFO L226 Difference]: Without dead ends: 45820 [2024-11-18 19:33:23,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 951 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-18 19:33:23,850 INFO L432 NwaCegarLoop]: 281 mSDtfsCounter, 135 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:23,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 692 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:33:23,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45820 states. [2024-11-18 19:33:26,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45820 to 23482. [2024-11-18 19:33:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23482 states, 16756 states have (on average 1.4918835044163286) internal successors, (24998), 16896 states have internal predecessors, (24998), 6295 states have call successors, (6295), 430 states have call predecessors, (6295), 430 states have return successors, (6295), 6155 states have call predecessors, (6295), 6295 states have call successors, (6295) [2024-11-18 19:33:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23482 states to 23482 states and 37588 transitions. [2024-11-18 19:33:26,612 INFO L78 Accepts]: Start accepts. Automaton has 23482 states and 37588 transitions. Word has length 477 [2024-11-18 19:33:26,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:26,612 INFO L471 AbstractCegarLoop]: Abstraction has 23482 states and 37588 transitions. [2024-11-18 19:33:26,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 3 states have call successors, (207), 2 states have call predecessors, (207), 4 states have return successors, (208), 3 states have call predecessors, (208), 3 states have call successors, (208) [2024-11-18 19:33:26,613 INFO L276 IsEmpty]: Start isEmpty. Operand 23482 states and 37588 transitions. [2024-11-18 19:33:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-11-18 19:33:26,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:26,620 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:26,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 19:33:26,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 19:33:26,822 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:26,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1370431354, now seen corresponding path program 1 times [2024-11-18 19:33:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438074432] [2024-11-18 19:33:26,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:26,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 54 proven. 168 refuted. 0 times theorem prover too weak. 10878 trivial. 0 not checked. [2024-11-18 19:33:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438074432] [2024-11-18 19:33:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438074432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:33:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272798198] [2024-11-18 19:33:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:27,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:33:27,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:33:27,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 19:33:27,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 19:33:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:27,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 19:33:27,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:33:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 5627 proven. 162 refuted. 0 times theorem prover too weak. 5311 trivial. 0 not checked. [2024-11-18 19:33:28,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:33:29,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 276 proven. 165 refuted. 0 times theorem prover too weak. 10659 trivial. 0 not checked. [2024-11-18 19:33:29,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272798198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:33:29,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:33:29,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 19 [2024-11-18 19:33:29,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388172826] [2024-11-18 19:33:29,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:33:29,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 19:33:29,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:29,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 19:33:29,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-18 19:33:29,039 INFO L87 Difference]: Start difference. First operand 23482 states and 37588 transitions. Second operand has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 19 states have internal predecessors, (225), 4 states have call successors, (160), 3 states have call predecessors, (160), 7 states have return successors, (162), 4 states have call predecessors, (162), 4 states have call successors, (162) [2024-11-18 19:33:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:33:46,723 INFO L93 Difference]: Finished difference Result 137170 states and 210561 transitions. [2024-11-18 19:33:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2024-11-18 19:33:46,724 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 19 states have internal predecessors, (225), 4 states have call successors, (160), 3 states have call predecessors, (160), 7 states have return successors, (162), 4 states have call predecessors, (162), 4 states have call successors, (162) Word has length 477 [2024-11-18 19:33:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:33:47,567 INFO L225 Difference]: With dead ends: 137170 [2024-11-18 19:33:47,567 INFO L226 Difference]: Without dead ends: 115146 [2024-11-18 19:33:47,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 966 SyntacticMatches, 2 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25282 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=6857, Invalid=49075, Unknown=0, NotChecked=0, Total=55932 [2024-11-18 19:33:47,663 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 5530 mSDsluCounter, 4400 mSDsCounter, 0 mSdLazyCounter, 5485 mSolverCounterSat, 3311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5532 SdHoareTripleChecker+Valid, 5270 SdHoareTripleChecker+Invalid, 8796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3311 IncrementalHoareTripleChecker+Valid, 5485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-18 19:33:47,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5532 Valid, 5270 Invalid, 8796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3311 Valid, 5485 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-18 19:33:47,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115146 states. [2024-11-18 19:33:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115146 to 41066. [2024-11-18 19:33:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41066 states, 28265 states have (on average 1.4015920750044224) internal successors, (39616), 28653 states have internal predecessors, (39616), 11595 states have call successors, (11595), 1205 states have call predecessors, (11595), 1205 states have return successors, (11595), 11207 states have call predecessors, (11595), 11595 states have call successors, (11595) [2024-11-18 19:33:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41066 states to 41066 states and 62806 transitions. [2024-11-18 19:33:54,000 INFO L78 Accepts]: Start accepts. Automaton has 41066 states and 62806 transitions. Word has length 477 [2024-11-18 19:33:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:33:54,001 INFO L471 AbstractCegarLoop]: Abstraction has 41066 states and 62806 transitions. [2024-11-18 19:33:54,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 19 states have internal predecessors, (225), 4 states have call successors, (160), 3 states have call predecessors, (160), 7 states have return successors, (162), 4 states have call predecessors, (162), 4 states have call successors, (162) [2024-11-18 19:33:54,001 INFO L276 IsEmpty]: Start isEmpty. Operand 41066 states and 62806 transitions. [2024-11-18 19:33:54,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-18 19:33:54,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:33:54,012 INFO L215 NwaCegarLoop]: trace histogram [75, 75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:54,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 19:33:54,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:33:54,213 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:33:54,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:33:54,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1840923980, now seen corresponding path program 1 times [2024-11-18 19:33:54,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:33:54,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864976098] [2024-11-18 19:33:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:33:54,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:33:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:33:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11100 trivial. 0 not checked. [2024-11-18 19:33:54,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:33:54,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864976098] [2024-11-18 19:33:54,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864976098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:33:54,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:33:54,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 19:33:54,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073694486] [2024-11-18 19:33:54,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:33:54,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 19:33:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:33:54,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 19:33:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 19:33:54,431 INFO L87 Difference]: Start difference. First operand 41066 states and 62806 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (75), 1 states have call predecessors, (75), 1 states have return successors, (75), 1 states have call predecessors, (75), 1 states have call successors, (75)