./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/eca-rers2012/Problem16_label12.c -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 fe4e112dd25c1caa635eb1a2c906a56d69959b0318728ac62beee521af0cbe1a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:45:59,905 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:45:59,980 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:45:59,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:45:59,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:46:00,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:46:00,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:46:00,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:46:00,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:46:00,025 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:46:00,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:46:00,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:46:00,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:46:00,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:46:00,029 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:46:00,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:46:00,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:46:00,030 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:46:00,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:46:00,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:46:00,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:46:00,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:46:00,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:46:00,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:46:00,037 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:46:00,037 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:46:00,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:46:00,037 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:46:00,037 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:46:00,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:46:00,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:46:00,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:46:00,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:46:00,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:46:00,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:46:00,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:46:00,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:46:00,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:46:00,042 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:46:00,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:46:00,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:46:00,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:46:00,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4e112dd25c1caa635eb1a2c906a56d69959b0318728ac62beee521af0cbe1a [2024-11-09 19:46:00,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:46:00,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:46:00,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:46:00,319 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:46:00,319 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:46:00,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label12.c [2024-11-09 19:46:01,790 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:46:02,155 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:46:02,158 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label12.c [2024-11-09 19:46:02,185 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9be68871/39057b741ab44ea09e61a343c5b7c12c/FLAGe1870bda7 [2024-11-09 19:46:02,204 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9be68871/39057b741ab44ea09e61a343c5b7c12c [2024-11-09 19:46:02,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:46:02,210 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:46:02,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:46:02,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:46:02,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:46:02,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:46:02" (1/1) ... [2024-11-09 19:46:02,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612c7ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:02, skipping insertion in model container [2024-11-09 19:46:02,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:46:02" (1/1) ... [2024-11-09 19:46:02,289 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:46:02,522 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/eca-rers2012/Problem16_label12.c[4229,4242] [2024-11-09 19:46:02,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:46:02,929 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:46:02,957 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/eca-rers2012/Problem16_label12.c[4229,4242] [2024-11-09 19:46:03,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:46:03,223 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:46:03,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03 WrapperNode [2024-11-09 19:46:03,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:46:03,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:46:03,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:46:03,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:46:03,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,390 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1769 [2024-11-09 19:46:03,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:46:03,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:46:03,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:46:03,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:46:03,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,416 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,479 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]. [2024-11-09 19:46:03,479 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,479 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,527 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:46:03,594 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:46:03,594 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:46:03,594 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:46:03,595 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (1/1) ... [2024-11-09 19:46:03,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:46:03,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:03,628 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) [2024-11-09 19:46:03,634 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 [2024-11-09 19:46:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:46:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:46:03,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:46:03,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:46:03,732 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:46:03,734 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:46:06,288 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1501: havoc calculate_output_#t~ret7#1; [2024-11-09 19:46:06,415 INFO L? ?]: Removed 757 outVars from TransFormulas that were not future-live. [2024-11-09 19:46:06,416 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:46:06,455 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:46:06,456 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:46:06,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:46:06 BoogieIcfgContainer [2024-11-09 19:46:06,456 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:46:06,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:46:06,465 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:46:06,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:46:06,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:46:02" (1/3) ... [2024-11-09 19:46:06,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2599e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:46:06, skipping insertion in model container [2024-11-09 19:46:06,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:46:03" (2/3) ... [2024-11-09 19:46:06,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2599e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:46:06, skipping insertion in model container [2024-11-09 19:46:06,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:46:06" (3/3) ... [2024-11-09 19:46:06,474 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label12.c [2024-11-09 19:46:06,492 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:46:06,492 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:46:06,577 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:46:06,585 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;@4e3217b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:46:06,586 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:46:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 397 states have (on average 2.4886649874055418) internal successors, (988), 398 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:06,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 19:46:06,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:06,602 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:06,603 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:06,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:06,610 INFO L85 PathProgramCache]: Analyzing trace with hash -14885678, now seen corresponding path program 1 times [2024-11-09 19:46:06,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:06,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396076616] [2024-11-09 19:46:06,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:06,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:06,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:46:06,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:06,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396076616] [2024-11-09 19:46:06,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396076616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:06,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:06,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:06,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988423587] [2024-11-09 19:46:06,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:07,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:07,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:07,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:07,029 INFO L87 Difference]: Start difference. First operand has 399 states, 397 states have (on average 2.4886649874055418) internal successors, (988), 398 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:09,174 INFO L93 Difference]: Finished difference Result 1128 states and 2895 transitions. [2024-11-09 19:46:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:09,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-09 19:46:09,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:09,194 INFO L225 Difference]: With dead ends: 1128 [2024-11-09 19:46:09,194 INFO L226 Difference]: Without dead ends: 665 [2024-11-09 19:46:09,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:09,205 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 610 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:09,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 258 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:46:09,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-11-09 19:46:09,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2024-11-09 19:46:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 2.305722891566265) internal successors, (1531), 664 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1531 transitions. [2024-11-09 19:46:09,289 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1531 transitions. Word has length 41 [2024-11-09 19:46:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:09,290 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1531 transitions. [2024-11-09 19:46:09,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:09,291 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1531 transitions. [2024-11-09 19:46:09,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 19:46:09,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:09,297 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:09,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:46:09,298 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:09,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:09,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1769435305, now seen corresponding path program 1 times [2024-11-09 19:46:09,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:09,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621034293] [2024-11-09 19:46:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:09,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:46:09,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:09,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621034293] [2024-11-09 19:46:09,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621034293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:09,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:09,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:09,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757018982] [2024-11-09 19:46:09,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:09,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:09,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:09,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:09,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:09,547 INFO L87 Difference]: Start difference. First operand 665 states and 1531 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:11,276 INFO L93 Difference]: Finished difference Result 1988 states and 4587 transitions. [2024-11-09 19:46:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:11,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-11-09 19:46:11,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:11,285 INFO L225 Difference]: With dead ends: 1988 [2024-11-09 19:46:11,285 INFO L226 Difference]: Without dead ends: 1325 [2024-11-09 19:46:11,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:11,290 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 643 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:11,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 158 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 19:46:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2024-11-09 19:46:11,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1325. [2024-11-09 19:46:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 2.1646525679758306) internal successors, (2866), 1324 states have internal predecessors, (2866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2866 transitions. [2024-11-09 19:46:11,339 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2866 transitions. Word has length 110 [2024-11-09 19:46:11,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:11,340 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 2866 transitions. [2024-11-09 19:46:11,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:11,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2866 transitions. [2024-11-09 19:46:11,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-09 19:46:11,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:11,343 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:11,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:46:11,344 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:11,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash -443594243, now seen corresponding path program 1 times [2024-11-09 19:46:11,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:11,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592567888] [2024-11-09 19:46:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:46:11,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:11,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592567888] [2024-11-09 19:46:11,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592567888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:11,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:11,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:11,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661056514] [2024-11-09 19:46:11,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:11,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:11,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:11,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:11,687 INFO L87 Difference]: Start difference. First operand 1325 states and 2866 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:13,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:13,721 INFO L93 Difference]: Finished difference Result 3971 states and 8594 transitions. [2024-11-09 19:46:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:13,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-11-09 19:46:13,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:13,736 INFO L225 Difference]: With dead ends: 3971 [2024-11-09 19:46:13,737 INFO L226 Difference]: Without dead ends: 2648 [2024-11-09 19:46:13,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:13,741 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 517 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:13,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 82 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:46:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2024-11-09 19:46:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2645. [2024-11-09 19:46:13,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 2644 states have (on average 2.1164901664145233) internal successors, (5596), 2644 states have internal predecessors, (5596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:13,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 5596 transitions. [2024-11-09 19:46:13,800 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 5596 transitions. Word has length 138 [2024-11-09 19:46:13,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:13,801 INFO L471 AbstractCegarLoop]: Abstraction has 2645 states and 5596 transitions. [2024-11-09 19:46:13,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:13,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 5596 transitions. [2024-11-09 19:46:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-09 19:46:13,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:13,809 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:13,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:46:13,809 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:13,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:13,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1028352333, now seen corresponding path program 1 times [2024-11-09 19:46:13,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:13,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207053472] [2024-11-09 19:46:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:13,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:46:14,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:14,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207053472] [2024-11-09 19:46:14,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207053472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:14,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:14,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:46:14,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348632132] [2024-11-09 19:46:14,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:14,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:14,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:14,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:14,015 INFO L87 Difference]: Start difference. First operand 2645 states and 5596 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:15,405 INFO L93 Difference]: Finished difference Result 6608 states and 13812 transitions. [2024-11-09 19:46:15,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:15,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-11-09 19:46:15,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:15,423 INFO L225 Difference]: With dead ends: 6608 [2024-11-09 19:46:15,423 INFO L226 Difference]: Without dead ends: 3965 [2024-11-09 19:46:15,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:15,428 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 541 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:15,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 86 Invalid, 1671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:46:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3965 states. [2024-11-09 19:46:15,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3965 to 3965. [2024-11-09 19:46:15,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3965 states, 3964 states have (on average 2.0095862764883954) internal successors, (7966), 3964 states have internal predecessors, (7966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3965 states to 3965 states and 7966 transitions. [2024-11-09 19:46:15,505 INFO L78 Accepts]: Start accepts. Automaton has 3965 states and 7966 transitions. Word has length 173 [2024-11-09 19:46:15,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:15,507 INFO L471 AbstractCegarLoop]: Abstraction has 3965 states and 7966 transitions. [2024-11-09 19:46:15,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3965 states and 7966 transitions. [2024-11-09 19:46:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-09 19:46:15,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:15,516 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:15,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:46:15,516 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:15,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:15,517 INFO L85 PathProgramCache]: Analyzing trace with hash -558025493, now seen corresponding path program 1 times [2024-11-09 19:46:15,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:15,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977462946] [2024-11-09 19:46:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:15,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:46:15,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:15,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977462946] [2024-11-09 19:46:15,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977462946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:15,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:15,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:15,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155783779] [2024-11-09 19:46:15,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:15,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:15,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:15,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:15,883 INFO L87 Difference]: Start difference. First operand 3965 states and 7966 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:17,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:17,604 INFO L93 Difference]: Finished difference Result 9578 states and 19465 transitions. [2024-11-09 19:46:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:17,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2024-11-09 19:46:17,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:17,630 INFO L225 Difference]: With dead ends: 9578 [2024-11-09 19:46:17,630 INFO L226 Difference]: Without dead ends: 5615 [2024-11-09 19:46:17,637 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 [2024-11-09 19:46:17,639 INFO L432 NwaCegarLoop]: 854 mSDtfsCounter, 555 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:17,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 862 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:46:17,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2024-11-09 19:46:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 5615. [2024-11-09 19:46:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 1.9729248307801923) internal successors, (11076), 5614 states have internal predecessors, (11076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:17,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 11076 transitions. [2024-11-09 19:46:17,810 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 11076 transitions. Word has length 277 [2024-11-09 19:46:17,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:17,811 INFO L471 AbstractCegarLoop]: Abstraction has 5615 states and 11076 transitions. [2024-11-09 19:46:17,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:17,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 11076 transitions. [2024-11-09 19:46:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-09 19:46:17,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:17,817 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:17,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:46:17,817 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:17,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:17,818 INFO L85 PathProgramCache]: Analyzing trace with hash -447930807, now seen corresponding path program 1 times [2024-11-09 19:46:17,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:17,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112288636] [2024-11-09 19:46:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:17,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:46:18,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:18,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112288636] [2024-11-09 19:46:18,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112288636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:18,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:18,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:18,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669266670] [2024-11-09 19:46:18,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:18,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:46:18,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:18,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:46:18,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:46:18,422 INFO L87 Difference]: Start difference. First operand 5615 states and 11076 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:20,226 INFO L93 Difference]: Finished difference Result 11558 states and 22754 transitions. [2024-11-09 19:46:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:46:20,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 287 [2024-11-09 19:46:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:20,254 INFO L225 Difference]: With dead ends: 11558 [2024-11-09 19:46:20,254 INFO L226 Difference]: Without dead ends: 5945 [2024-11-09 19:46:20,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:46:20,265 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 389 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:20,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 328 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 19:46:20,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5945 states. [2024-11-09 19:46:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5945 to 5945. [2024-11-09 19:46:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5945 states, 5944 states have (on average 1.9639973082099595) internal successors, (11674), 5944 states have internal predecessors, (11674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 11674 transitions. [2024-11-09 19:46:20,396 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 11674 transitions. Word has length 287 [2024-11-09 19:46:20,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:20,397 INFO L471 AbstractCegarLoop]: Abstraction has 5945 states and 11674 transitions. [2024-11-09 19:46:20,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 11674 transitions. [2024-11-09 19:46:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-09 19:46:20,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:20,402 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:20,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:46:20,403 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:20,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:20,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1620126310, now seen corresponding path program 1 times [2024-11-09 19:46:20,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:20,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24843794] [2024-11-09 19:46:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:20,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:46:20,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:20,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24843794] [2024-11-09 19:46:20,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24843794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:20,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:20,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 19:46:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471340234] [2024-11-09 19:46:20,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:21,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 19:46:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:21,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 19:46:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:21,002 INFO L87 Difference]: Start difference. First operand 5945 states and 11674 transitions. Second operand has 7 states, 7 states have (on average 53.57142857142857) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:23,136 INFO L93 Difference]: Finished difference Result 11421 states and 22337 transitions. [2024-11-09 19:46:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 19:46:23,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.57142857142857) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 375 [2024-11-09 19:46:23,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:23,154 INFO L225 Difference]: With dead ends: 11421 [2024-11-09 19:46:23,154 INFO L226 Difference]: Without dead ends: 5615 [2024-11-09 19:46:23,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:46:23,162 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 572 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:23,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 299 Invalid, 3348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:46:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2024-11-09 19:46:23,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 5615. [2024-11-09 19:46:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5614 states have (on average 1.8619522622016387) internal successors, (10453), 5614 states have internal predecessors, (10453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 10453 transitions. [2024-11-09 19:46:23,258 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 10453 transitions. Word has length 375 [2024-11-09 19:46:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:23,259 INFO L471 AbstractCegarLoop]: Abstraction has 5615 states and 10453 transitions. [2024-11-09 19:46:23,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.57142857142857) internal successors, (375), 6 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 10453 transitions. [2024-11-09 19:46:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-09 19:46:23,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:23,264 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:23,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:46:23,264 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:23,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:23,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1013535468, now seen corresponding path program 1 times [2024-11-09 19:46:23,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:23,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638445341] [2024-11-09 19:46:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:23,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-09 19:46:23,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:23,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638445341] [2024-11-09 19:46:23,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638445341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:23,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:23,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:23,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151296879] [2024-11-09 19:46:23,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:23,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:23,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:23,599 INFO L87 Difference]: Start difference. First operand 5615 states and 10453 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:24,818 INFO L93 Difference]: Finished difference Result 12878 states and 24102 transitions. [2024-11-09 19:46:24,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:24,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2024-11-09 19:46:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:24,832 INFO L225 Difference]: With dead ends: 12878 [2024-11-09 19:46:24,833 INFO L226 Difference]: Without dead ends: 7595 [2024-11-09 19:46:24,838 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 [2024-11-09 19:46:24,839 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 572 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:24,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 44 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:46:24,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7595 states. [2024-11-09 19:46:24,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7595 to 7595. [2024-11-09 19:46:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7595 states, 7594 states have (on average 1.8671319462733738) internal successors, (14179), 7594 states have internal predecessors, (14179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7595 states to 7595 states and 14179 transitions. [2024-11-09 19:46:24,944 INFO L78 Accepts]: Start accepts. Automaton has 7595 states and 14179 transitions. Word has length 382 [2024-11-09 19:46:24,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:24,944 INFO L471 AbstractCegarLoop]: Abstraction has 7595 states and 14179 transitions. [2024-11-09 19:46:24,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:24,945 INFO L276 IsEmpty]: Start isEmpty. Operand 7595 states and 14179 transitions. [2024-11-09 19:46:24,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2024-11-09 19:46:24,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:24,951 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:24,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:46:24,951 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:24,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:24,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1262470142, now seen corresponding path program 1 times [2024-11-09 19:46:24,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:24,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585994921] [2024-11-09 19:46:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:24,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:46:25,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:25,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585994921] [2024-11-09 19:46:25,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585994921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:25,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:25,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:25,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286345340] [2024-11-09 19:46:25,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:25,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:46:25,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:25,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:46:25,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:46:25,577 INFO L87 Difference]: Start difference. First operand 7595 states and 14179 transitions. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:26,743 INFO L93 Difference]: Finished difference Result 15188 states and 28359 transitions. [2024-11-09 19:46:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:26,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 436 [2024-11-09 19:46:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:26,760 INFO L225 Difference]: With dead ends: 15188 [2024-11-09 19:46:26,760 INFO L226 Difference]: Without dead ends: 7925 [2024-11-09 19:46:26,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:46:26,770 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 792 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:26,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 117 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7925 states. [2024-11-09 19:46:26,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7925 to 7925. [2024-11-09 19:46:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7925 states, 7924 states have (on average 1.8643361938414942) internal successors, (14773), 7924 states have internal predecessors, (14773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7925 states to 7925 states and 14773 transitions. [2024-11-09 19:46:26,886 INFO L78 Accepts]: Start accepts. Automaton has 7925 states and 14773 transitions. Word has length 436 [2024-11-09 19:46:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:26,886 INFO L471 AbstractCegarLoop]: Abstraction has 7925 states and 14773 transitions. [2024-11-09 19:46:26,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 7925 states and 14773 transitions. [2024-11-09 19:46:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2024-11-09 19:46:26,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:26,894 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:26,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:46:26,894 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:26,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1671568556, now seen corresponding path program 1 times [2024-11-09 19:46:26,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:26,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077979734] [2024-11-09 19:46:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:26,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-09 19:46:27,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:27,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077979734] [2024-11-09 19:46:27,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077979734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:46:27,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321357532] [2024-11-09 19:46:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:27,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:46:27,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:46:27,548 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) [2024-11-09 19:46:27,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:46:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:27,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 19:46:27,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:46:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 218 proven. 38 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 19:46:29,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:46:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 218 proven. 38 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 19:46:31,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321357532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:46:31,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:46:31,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 5 [2024-11-09 19:46:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942989908] [2024-11-09 19:46:31,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:46:31,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 19:46:31,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:31,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 19:46:31,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:46:31,244 INFO L87 Difference]: Start difference. First operand 7925 states and 14773 transitions. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:34,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:34,477 INFO L93 Difference]: Finished difference Result 20798 states and 38940 transitions. [2024-11-09 19:46:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 19:46:34,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 497 [2024-11-09 19:46:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:34,507 INFO L225 Difference]: With dead ends: 20798 [2024-11-09 19:46:34,507 INFO L226 Difference]: Without dead ends: 13535 [2024-11-09 19:46:34,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 991 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-09 19:46:34,516 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 3012 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 3994 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3012 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 4343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:34,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3012 Valid, 43 Invalid, 4343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3994 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:46:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13535 states. [2024-11-09 19:46:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13535 to 10895. [2024-11-09 19:46:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10895 states, 10894 states have (on average 1.8779144483201762) internal successors, (20458), 10894 states have internal predecessors, (20458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10895 states to 10895 states and 20458 transitions. [2024-11-09 19:46:34,692 INFO L78 Accepts]: Start accepts. Automaton has 10895 states and 20458 transitions. Word has length 497 [2024-11-09 19:46:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:34,693 INFO L471 AbstractCegarLoop]: Abstraction has 10895 states and 20458 transitions. [2024-11-09 19:46:34,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 10895 states and 20458 transitions. [2024-11-09 19:46:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2024-11-09 19:46:34,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:34,715 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:34,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:46:34,916 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,SelfDestructingSolverStorable9 [2024-11-09 19:46:34,916 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:34,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash 195959544, now seen corresponding path program 1 times [2024-11-09 19:46:34,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:34,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069759067] [2024-11-09 19:46:34,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:34,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 1292 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2024-11-09 19:46:35,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:35,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069759067] [2024-11-09 19:46:35,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069759067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:35,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:35,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:35,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824025703] [2024-11-09 19:46:35,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:35,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:35,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:35,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:35,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:35,675 INFO L87 Difference]: Start difference. First operand 10895 states and 20458 transitions. Second operand has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:36,883 INFO L93 Difference]: Finished difference Result 23438 states and 44161 transitions. [2024-11-09 19:46:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:36,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 974 [2024-11-09 19:46:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:36,902 INFO L225 Difference]: With dead ends: 23438 [2024-11-09 19:46:36,902 INFO L226 Difference]: Without dead ends: 13205 [2024-11-09 19:46:36,911 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 [2024-11-09 19:46:36,912 INFO L432 NwaCegarLoop]: 696 mSDtfsCounter, 484 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:36,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 702 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13205 states. [2024-11-09 19:46:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13205 to 12875. [2024-11-09 19:46:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12875 states, 12874 states have (on average 1.864610843560665) internal successors, (24005), 12874 states have internal predecessors, (24005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12875 states to 12875 states and 24005 transitions. [2024-11-09 19:46:37,122 INFO L78 Accepts]: Start accepts. Automaton has 12875 states and 24005 transitions. Word has length 974 [2024-11-09 19:46:37,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:37,123 INFO L471 AbstractCegarLoop]: Abstraction has 12875 states and 24005 transitions. [2024-11-09 19:46:37,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:37,124 INFO L276 IsEmpty]: Start isEmpty. Operand 12875 states and 24005 transitions. [2024-11-09 19:46:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2024-11-09 19:46:37,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:37,145 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:37,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:46:37,146 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:37,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:37,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1881069294, now seen corresponding path program 1 times [2024-11-09 19:46:37,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:37,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129206979] [2024-11-09 19:46:37,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:37,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 1123 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2024-11-09 19:46:37,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:37,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129206979] [2024-11-09 19:46:37,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129206979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:37,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:37,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:37,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152909325] [2024-11-09 19:46:37,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:37,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:37,893 INFO L87 Difference]: Start difference. First operand 12875 states and 24005 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:39,028 INFO L93 Difference]: Finished difference Result 25088 states and 46820 transitions. [2024-11-09 19:46:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 975 [2024-11-09 19:46:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:39,049 INFO L225 Difference]: With dead ends: 25088 [2024-11-09 19:46:39,050 INFO L226 Difference]: Without dead ends: 12875 [2024-11-09 19:46:39,064 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 [2024-11-09 19:46:39,065 INFO L432 NwaCegarLoop]: 689 mSDtfsCounter, 513 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:39,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 697 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12875 states. [2024-11-09 19:46:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12875 to 12875. [2024-11-09 19:46:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12875 states, 12874 states have (on average 1.848687276681684) internal successors, (23800), 12874 states have internal predecessors, (23800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12875 states to 12875 states and 23800 transitions. [2024-11-09 19:46:39,217 INFO L78 Accepts]: Start accepts. Automaton has 12875 states and 23800 transitions. Word has length 975 [2024-11-09 19:46:39,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:39,219 INFO L471 AbstractCegarLoop]: Abstraction has 12875 states and 23800 transitions. [2024-11-09 19:46:39,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 12875 states and 23800 transitions. [2024-11-09 19:46:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2024-11-09 19:46:39,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:46:39,240 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:39,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:46:39,241 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:46:39,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:46:39,241 INFO L85 PathProgramCache]: Analyzing trace with hash 911684739, now seen corresponding path program 1 times [2024-11-09 19:46:39,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:46:39,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774115319] [2024-11-09 19:46:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:46:39,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:46:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:46:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 1499 trivial. 0 not checked. [2024-11-09 19:46:39,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:46:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774115319] [2024-11-09 19:46:39,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774115319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:46:39,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:46:39,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:46:39,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565266628] [2024-11-09 19:46:39,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:46:39,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:46:39,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:46:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:46:39,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:46:39,922 INFO L87 Difference]: Start difference. First operand 12875 states and 23800 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:41,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:46:41,087 INFO L93 Difference]: Finished difference Result 25085 states and 46408 transitions. [2024-11-09 19:46:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:46:41,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 988 [2024-11-09 19:46:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:46:41,089 INFO L225 Difference]: With dead ends: 25085 [2024-11-09 19:46:41,089 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 19:46:41,101 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 [2024-11-09 19:46:41,102 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 559 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:46:41,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 694 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:46:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 19:46:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 19:46:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:41,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 19:46:41,103 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 988 [2024-11-09 19:46:41,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:46:41,104 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 19:46:41,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:46:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 19:46:41,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 19:46:41,107 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 19:46:41,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:46:41,111 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:46:41,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 19:46:41,520 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 19:46:41,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:46:41 BoogieIcfgContainer [2024-11-09 19:46:41,537 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 19:46:41,538 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 19:46:41,538 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 19:46:41,538 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 19:46:41,538 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:46:06" (3/4) ... [2024-11-09 19:46:41,544 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 19:46:41,581 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-09 19:46:41,584 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 19:46:41,588 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 19:46:41,591 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 19:46:41,837 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 19:46:41,838 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 19:46:41,838 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 19:46:41,838 INFO L158 Benchmark]: Toolchain (without parser) took 39628.51ms. Allocated memory was 151.0MB in the beginning and 815.8MB in the end (delta: 664.8MB). Free memory was 89.3MB in the beginning and 468.3MB in the end (delta: -379.0MB). Peak memory consumption was 285.6MB. Max. memory is 16.1GB. [2024-11-09 19:46:41,839 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 151.0MB. Free memory was 113.7MB in the beginning and 113.6MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 19:46:41,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1011.76ms. Allocated memory was 151.0MB in the beginning and 197.1MB in the end (delta: 46.1MB). Free memory was 89.3MB in the beginning and 125.4MB in the end (delta: -36.1MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-11-09 19:46:41,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 164.93ms. Allocated memory is still 197.1MB. Free memory was 125.4MB in the beginning and 101.3MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-09 19:46:41,840 INFO L158 Benchmark]: Boogie Preprocessor took 202.09ms. Allocated memory is still 197.1MB. Free memory was 101.3MB in the beginning and 68.8MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-11-09 19:46:41,840 INFO L158 Benchmark]: IcfgBuilder took 2862.09ms. Allocated memory was 197.1MB in the beginning and 310.4MB in the end (delta: 113.2MB). Free memory was 68.8MB in the beginning and 176.2MB in the end (delta: -107.4MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. [2024-11-09 19:46:41,841 INFO L158 Benchmark]: TraceAbstraction took 35073.10ms. Allocated memory was 310.4MB in the beginning and 815.8MB in the end (delta: 505.4MB). Free memory was 175.1MB in the beginning and 511.3MB in the end (delta: -336.1MB). Peak memory consumption was 169.3MB. Max. memory is 16.1GB. [2024-11-09 19:46:41,841 INFO L158 Benchmark]: Witness Printer took 299.95ms. Allocated memory is still 815.8MB. Free memory was 511.3MB in the beginning and 468.3MB in the end (delta: 43.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-11-09 19:46:41,843 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 151.0MB. Free memory was 113.7MB in the beginning and 113.6MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1011.76ms. Allocated memory was 151.0MB in the beginning and 197.1MB in the end (delta: 46.1MB). Free memory was 89.3MB in the beginning and 125.4MB in the end (delta: -36.1MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 164.93ms. Allocated memory is still 197.1MB. Free memory was 125.4MB in the beginning and 101.3MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 202.09ms. Allocated memory is still 197.1MB. Free memory was 101.3MB in the beginning and 68.8MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * IcfgBuilder took 2862.09ms. Allocated memory was 197.1MB in the beginning and 310.4MB in the end (delta: 113.2MB). Free memory was 68.8MB in the beginning and 176.2MB in the end (delta: -107.4MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. * TraceAbstraction took 35073.10ms. Allocated memory was 310.4MB in the beginning and 815.8MB in the end (delta: 505.4MB). Free memory was 175.1MB in the beginning and 511.3MB in the end (delta: -336.1MB). Peak memory consumption was 169.3MB. Max. memory is 16.1GB. * Witness Printer took 299.95ms. Allocated memory is still 815.8MB. Free memory was 511.3MB in the beginning and 468.3MB in the end (delta: 43.0MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 134]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 399 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.6s, OverallIterations: 13, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9759 SdHoareTripleChecker+Valid, 21.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9759 mSDsluCounter, 4370 SdHoareTripleChecker+Invalid, 17.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 198 mSDsCounter, 2773 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22814 IncrementalHoareTripleChecker+Invalid, 25587 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2773 mSolverCounterUnsat, 4172 mSDtfsCounter, 22814 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1033 GetRequests, 1008 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12875occurred in iteration=11, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 2973 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 6150 NumberOfCodeBlocks, 6150 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 6632 ConstructedInterpolants, 0 QuantifiedInterpolants, 24652 SizeOfPredicates, 5 NumberOfNonLiveVariables, 593 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 6856/6970 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1783]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-09 19:46:41,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE