./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem11_label06.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/Problem11_label06.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 e7162a37b2481575f46ee042f017cf4130087aba4666f87e20be1f5306ddf30d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:20:57,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:20:57,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:20:57,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:20:57,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:20:57,466 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:20:57,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:20:57,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:20:57,468 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:20:57,470 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:20:57,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:20:57,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:20:57,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:20:57,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:20:57,472 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:20:57,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:20:57,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:20:57,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:20:57,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:20:57,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:20:57,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:20:57,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:20:57,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:20:57,479 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:20:57,479 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:20:57,480 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:20:57,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:20:57,480 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:20:57,480 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:20:57,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:20:57,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:20:57,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:20:57,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:20:57,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:20:57,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:20:57,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:20:57,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:20:57,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:20:57,482 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:20:57,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:20:57,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:20:57,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:20:57,484 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7162a37b2481575f46ee042f017cf4130087aba4666f87e20be1f5306ddf30d [2024-11-09 19:20:57,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:20:57,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:20:57,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:20:57,755 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:20:57,756 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:20:57,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem11_label06.c [2024-11-09 19:20:59,169 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:20:59,455 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:20:59,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label06.c [2024-11-09 19:20:59,476 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351a380bb/e9062c4def0a42309efe3e990e152a50/FLAG576117280 [2024-11-09 19:20:59,493 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/351a380bb/e9062c4def0a42309efe3e990e152a50 [2024-11-09 19:20:59,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:20:59,497 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:20:59,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:20:59,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:20:59,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:20:59,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:20:59" (1/1) ... [2024-11-09 19:20:59,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1387bf19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:20:59, skipping insertion in model container [2024-11-09 19:20:59,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:20:59" (1/1) ... [2024-11-09 19:20:59,560 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:20:59,817 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/Problem11_label06.c[9087,9100] [2024-11-09 19:21:00,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:21:00,050 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:21:00,093 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/Problem11_label06.c[9087,9100] [2024-11-09 19:21:00,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:21:00,236 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:21:00,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00 WrapperNode [2024-11-09 19:21:00,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:21:00,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:21:00,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:21:00,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:21:00,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,372 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2024-11-09 19:21:00,373 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:21:00,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:21:00,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:21:00,374 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:21:00,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,528 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 19:21:00,528 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,590 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,614 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:21:00,628 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:21:00,628 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:21:00,628 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:21:00,629 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (1/1) ... [2024-11-09 19:21:00,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:21:00,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:21:00,669 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 19:21:00,675 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 19:21:00,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:21:00,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:21:00,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:21:00,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:21:00,788 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:21:00,789 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:21:02,627 INFO L? ?]: Removed 248 outVars from TransFormulas that were not future-live. [2024-11-09 19:21:02,628 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:21:02,652 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:21:02,653 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:21:02,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:21:02 BoogieIcfgContainer [2024-11-09 19:21:02,654 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:21:02,656 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:21:02,656 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:21:02,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:21:02,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:20:59" (1/3) ... [2024-11-09 19:21:02,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773fc387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:21:02, skipping insertion in model container [2024-11-09 19:21:02,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:21:00" (2/3) ... [2024-11-09 19:21:02,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773fc387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:21:02, skipping insertion in model container [2024-11-09 19:21:02,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:21:02" (3/3) ... [2024-11-09 19:21:02,667 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label06.c [2024-11-09 19:21:02,684 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:21:02,684 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:21:02,755 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:21:02,762 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;@f07bb2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:21:02,762 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:21:02,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 284 states have (on average 2.1267605633802815) internal successors, (604), 285 states have internal predecessors, (604), 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 19:21:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 19:21:02,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:02,781 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, 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 19:21:02,781 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:02,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:02,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1135972582, now seen corresponding path program 1 times [2024-11-09 19:21:02,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:02,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213648564] [2024-11-09 19:21:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:02,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:03,246 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 19:21:03,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:03,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213648564] [2024-11-09 19:21:03,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213648564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:03,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:03,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:21:03,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3137650] [2024-11-09 19:21:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:03,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:03,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:03,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:03,282 INFO L87 Difference]: Start difference. First operand has 286 states, 284 states have (on average 2.1267605633802815) internal successors, (604), 285 states have internal predecessors, (604), 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 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 19:21:04,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:04,606 INFO L93 Difference]: Finished difference Result 767 states and 1708 transitions. [2024-11-09 19:21:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:04,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 65 [2024-11-09 19:21:04,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:04,628 INFO L225 Difference]: With dead ends: 767 [2024-11-09 19:21:04,628 INFO L226 Difference]: Without dead ends: 416 [2024-11-09 19:21:04,634 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 19:21:04,638 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 284 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:04,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 227 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:21:04,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-09 19:21:04,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2024-11-09 19:21:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 2.0240963855421685) internal successors, (840), 415 states have internal predecessors, (840), 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 19:21:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 840 transitions. [2024-11-09 19:21:04,727 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 840 transitions. Word has length 65 [2024-11-09 19:21:04,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:04,729 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 840 transitions. [2024-11-09 19:21:04,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 19:21:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 840 transitions. [2024-11-09 19:21:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-09 19:21:04,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:04,735 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, 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] [2024-11-09 19:21:04,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:21:04,736 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:04,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:04,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1660747567, now seen corresponding path program 1 times [2024-11-09 19:21:04,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967522141] [2024-11-09 19:21:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:21:04,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967522141] [2024-11-09 19:21:04,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967522141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:04,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:04,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:21:04,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095034494] [2024-11-09 19:21:04,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:04,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:04,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:04,966 INFO L87 Difference]: Start difference. First operand 416 states and 840 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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 19:21:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:05,877 INFO L93 Difference]: Finished difference Result 1219 states and 2485 transitions. [2024-11-09 19:21:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:05,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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 134 [2024-11-09 19:21:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:05,882 INFO L225 Difference]: With dead ends: 1219 [2024-11-09 19:21:05,882 INFO L226 Difference]: Without dead ends: 805 [2024-11-09 19:21:05,883 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 19:21:05,884 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 261 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:05,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 125 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:21:05,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-09 19:21:05,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 794. [2024-11-09 19:21:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.9722572509457756) internal successors, (1564), 793 states have internal predecessors, (1564), 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 19:21:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1564 transitions. [2024-11-09 19:21:05,932 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1564 transitions. Word has length 134 [2024-11-09 19:21:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:05,933 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1564 transitions. [2024-11-09 19:21:05,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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 19:21:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1564 transitions. [2024-11-09 19:21:05,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-09 19:21:05,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:05,938 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, 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] [2024-11-09 19:21:05,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:21:05,938 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:05,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:05,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2051489751, now seen corresponding path program 1 times [2024-11-09 19:21:05,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:05,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202130975] [2024-11-09 19:21:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:05,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:21:06,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:06,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202130975] [2024-11-09 19:21:06,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202130975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:06,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:06,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:21:06,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868899192] [2024-11-09 19:21:06,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:06,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:06,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:06,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:06,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:06,275 INFO L87 Difference]: Start difference. First operand 794 states and 1564 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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 19:21:07,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:07,372 INFO L93 Difference]: Finished difference Result 2328 states and 4623 transitions. [2024-11-09 19:21:07,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:07,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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 136 [2024-11-09 19:21:07,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:07,381 INFO L225 Difference]: With dead ends: 2328 [2024-11-09 19:21:07,381 INFO L226 Difference]: Without dead ends: 1536 [2024-11-09 19:21:07,382 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 19:21:07,384 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 238 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:07,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 197 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:21:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2024-11-09 19:21:07,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1535. [2024-11-09 19:21:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 1.8363754889178618) internal successors, (2817), 1534 states have internal predecessors, (2817), 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 19:21:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2817 transitions. [2024-11-09 19:21:07,428 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2817 transitions. Word has length 136 [2024-11-09 19:21:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:07,429 INFO L471 AbstractCegarLoop]: Abstraction has 1535 states and 2817 transitions. [2024-11-09 19:21:07,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 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 19:21:07,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2817 transitions. [2024-11-09 19:21:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-09 19:21:07,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:07,434 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, 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] [2024-11-09 19:21:07,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:21:07,434 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:07,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash 534343470, now seen corresponding path program 1 times [2024-11-09 19:21:07,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:07,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77756288] [2024-11-09 19:21:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:21:07,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:07,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77756288] [2024-11-09 19:21:07,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77756288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:07,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:07,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:07,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033353492] [2024-11-09 19:21:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:07,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:07,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:07,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:07,753 INFO L87 Difference]: Start difference. First operand 1535 states and 2817 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 19:21:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:08,756 INFO L93 Difference]: Finished difference Result 3635 states and 6751 transitions. [2024-11-09 19:21:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:08,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 193 [2024-11-09 19:21:08,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:08,768 INFO L225 Difference]: With dead ends: 3635 [2024-11-09 19:21:08,769 INFO L226 Difference]: Without dead ends: 2287 [2024-11-09 19:21:08,772 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 19:21:08,775 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 261 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:08,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 460 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:21:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2024-11-09 19:21:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 1908. [2024-11-09 19:21:08,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 1.8384897745149449) internal successors, (3506), 1907 states have internal predecessors, (3506), 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 19:21:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 3506 transitions. [2024-11-09 19:21:08,849 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 3506 transitions. Word has length 193 [2024-11-09 19:21:08,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:08,850 INFO L471 AbstractCegarLoop]: Abstraction has 1908 states and 3506 transitions. [2024-11-09 19:21:08,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 19:21:08,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 3506 transitions. [2024-11-09 19:21:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2024-11-09 19:21:08,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:08,855 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:08,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:21:08,855 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:08,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:08,856 INFO L85 PathProgramCache]: Analyzing trace with hash 958960882, now seen corresponding path program 1 times [2024-11-09 19:21:08,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:08,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368960691] [2024-11-09 19:21:08,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:08,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 19:21:09,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:09,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368960691] [2024-11-09 19:21:09,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368960691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:09,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:09,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:09,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680387585] [2024-11-09 19:21:09,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:09,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:09,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:09,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:09,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:09,210 INFO L87 Difference]: Start difference. First operand 1908 states and 3506 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 19:21:10,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:10,235 INFO L93 Difference]: Finished difference Result 4925 states and 9190 transitions. [2024-11-09 19:21:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:10,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 249 [2024-11-09 19:21:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:10,247 INFO L225 Difference]: With dead ends: 4925 [2024-11-09 19:21:10,247 INFO L226 Difference]: Without dead ends: 3019 [2024-11-09 19:21:10,250 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 19:21:10,251 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 268 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:10,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 462 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:21:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2024-11-09 19:21:10,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 3019. [2024-11-09 19:21:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 3018 states have (on average 1.821736249171637) internal successors, (5498), 3018 states have internal predecessors, (5498), 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 19:21:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 5498 transitions. [2024-11-09 19:21:10,363 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 5498 transitions. Word has length 249 [2024-11-09 19:21:10,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:10,364 INFO L471 AbstractCegarLoop]: Abstraction has 3019 states and 5498 transitions. [2024-11-09 19:21:10,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 19:21:10,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 5498 transitions. [2024-11-09 19:21:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-09 19:21:10,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:10,369 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 19:21:10,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:21:10,370 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:10,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash -517688855, now seen corresponding path program 1 times [2024-11-09 19:21:10,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:10,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462842731] [2024-11-09 19:21:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:10,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-09 19:21:10,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:10,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462842731] [2024-11-09 19:21:10,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462842731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:10,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:10,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:10,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540182471] [2024-11-09 19:21:10,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:10,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:10,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:10,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:10,657 INFO L87 Difference]: Start difference. First operand 3019 states and 5498 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 19:21:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:11,582 INFO L93 Difference]: Finished difference Result 6595 states and 12138 transitions. [2024-11-09 19:21:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:11,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 297 [2024-11-09 19:21:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:11,596 INFO L225 Difference]: With dead ends: 6595 [2024-11-09 19:21:11,596 INFO L226 Difference]: Without dead ends: 3578 [2024-11-09 19:21:11,599 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 19:21:11,600 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 253 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:11,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 507 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:21:11,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2024-11-09 19:21:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3573. [2024-11-09 19:21:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3573 states, 3572 states have (on average 1.822508398656215) internal successors, (6510), 3572 states have internal predecessors, (6510), 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 19:21:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3573 states to 3573 states and 6510 transitions. [2024-11-09 19:21:11,661 INFO L78 Accepts]: Start accepts. Automaton has 3573 states and 6510 transitions. Word has length 297 [2024-11-09 19:21:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:11,662 INFO L471 AbstractCegarLoop]: Abstraction has 3573 states and 6510 transitions. [2024-11-09 19:21:11,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 19:21:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3573 states and 6510 transitions. [2024-11-09 19:21:11,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-11-09 19:21:11,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:11,670 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 3, 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] [2024-11-09 19:21:11,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:21:11,670 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:11,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1801083991, now seen corresponding path program 1 times [2024-11-09 19:21:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:11,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093100724] [2024-11-09 19:21:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:11,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:21:11,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:11,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093100724] [2024-11-09 19:21:11,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093100724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:11,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:11,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:11,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534504858] [2024-11-09 19:21:11,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:11,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:11,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:11,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:11,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:11,893 INFO L87 Difference]: Start difference. First operand 3573 states and 6510 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 19:21:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:12,903 INFO L93 Difference]: Finished difference Result 8622 states and 15905 transitions. [2024-11-09 19:21:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:12,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 330 [2024-11-09 19:21:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:12,921 INFO L225 Difference]: With dead ends: 8622 [2024-11-09 19:21:12,922 INFO L226 Difference]: Without dead ends: 5051 [2024-11-09 19:21:12,925 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 19:21:12,926 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 279 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:12,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 155 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:21:12,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2024-11-09 19:21:13,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 5049. [2024-11-09 19:21:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5049 states, 5048 states have (on average 1.8096275752773376) internal successors, (9135), 5048 states have internal predecessors, (9135), 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 19:21:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5049 states to 5049 states and 9135 transitions. [2024-11-09 19:21:13,044 INFO L78 Accepts]: Start accepts. Automaton has 5049 states and 9135 transitions. Word has length 330 [2024-11-09 19:21:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:13,045 INFO L471 AbstractCegarLoop]: Abstraction has 5049 states and 9135 transitions. [2024-11-09 19:21:13,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 19:21:13,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5049 states and 9135 transitions. [2024-11-09 19:21:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-11-09 19:21:13,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:13,058 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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 19:21:13,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:21:13,058 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:13,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1862678215, now seen corresponding path program 1 times [2024-11-09 19:21:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:13,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72184901] [2024-11-09 19:21:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:13,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-09 19:21:13,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:13,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72184901] [2024-11-09 19:21:13,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72184901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:13,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:13,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:13,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981953857] [2024-11-09 19:21:13,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:13,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:13,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:13,336 INFO L87 Difference]: Start difference. First operand 5049 states and 9135 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 19:21:14,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:14,239 INFO L93 Difference]: Finished difference Result 11207 states and 20426 transitions. [2024-11-09 19:21:14,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:14,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 388 [2024-11-09 19:21:14,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:14,261 INFO L225 Difference]: With dead ends: 11207 [2024-11-09 19:21:14,261 INFO L226 Difference]: Without dead ends: 6160 [2024-11-09 19:21:14,268 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 19:21:14,268 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 263 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:14,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 161 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:21:14,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2024-11-09 19:21:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 6158. [2024-11-09 19:21:14,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 6157 states have (on average 1.80298846840994) internal successors, (11101), 6157 states have internal predecessors, (11101), 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 19:21:14,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 11101 transitions. [2024-11-09 19:21:14,414 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 11101 transitions. Word has length 388 [2024-11-09 19:21:14,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:14,415 INFO L471 AbstractCegarLoop]: Abstraction has 6158 states and 11101 transitions. [2024-11-09 19:21:14,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 19:21:14,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 11101 transitions. [2024-11-09 19:21:14,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2024-11-09 19:21:14,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:14,427 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 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 19:21:14,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:21:14,428 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:14,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1033196680, now seen corresponding path program 1 times [2024-11-09 19:21:14,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:14,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402151235] [2024-11-09 19:21:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:14,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-09 19:21:14,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:14,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402151235] [2024-11-09 19:21:14,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402151235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:14,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:14,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:21:14,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333793336] [2024-11-09 19:21:14,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:14,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:14,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:14,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:14,737 INFO L87 Difference]: Start difference. First operand 6158 states and 11101 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 19:21:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:15,291 INFO L93 Difference]: Finished difference Result 12310 states and 22196 transitions. [2024-11-09 19:21:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:15,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 408 [2024-11-09 19:21:15,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:15,313 INFO L225 Difference]: With dead ends: 12310 [2024-11-09 19:21:15,314 INFO L226 Difference]: Without dead ends: 6154 [2024-11-09 19:21:15,321 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 19:21:15,323 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 337 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:15,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 42 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 19:21:15,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2024-11-09 19:21:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 6154. [2024-11-09 19:21:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 6153 states have (on average 1.8028603933040792) internal successors, (11093), 6153 states have internal predecessors, (11093), 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 19:21:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 11093 transitions. [2024-11-09 19:21:15,469 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 11093 transitions. Word has length 408 [2024-11-09 19:21:15,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:15,470 INFO L471 AbstractCegarLoop]: Abstraction has 6154 states and 11093 transitions. [2024-11-09 19:21:15,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 19:21:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 11093 transitions. [2024-11-09 19:21:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-11-09 19:21:15,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:15,484 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:21:15,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:21:15,485 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:15,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:15,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1499181942, now seen corresponding path program 1 times [2024-11-09 19:21:15,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:15,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405641156] [2024-11-09 19:21:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:15,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-09 19:21:15,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405641156] [2024-11-09 19:21:15,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405641156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:15,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:15,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:15,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944116281] [2024-11-09 19:21:15,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:15,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:21:15,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:15,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:21:15,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:21:15,859 INFO L87 Difference]: Start difference. First operand 6154 states and 11093 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 3 states have internal predecessors, (329), 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 19:21:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:17,277 INFO L93 Difference]: Finished difference Result 16756 states and 30076 transitions. [2024-11-09 19:21:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:21:17,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 3 states have internal predecessors, (329), 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 440 [2024-11-09 19:21:17,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:17,302 INFO L225 Difference]: With dead ends: 16756 [2024-11-09 19:21:17,302 INFO L226 Difference]: Without dead ends: 10604 [2024-11-09 19:21:17,310 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 19:21:17,311 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 428 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:17,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 73 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 19:21:17,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10604 states. [2024-11-09 19:21:17,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10604 to 10604. [2024-11-09 19:21:17,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10604 states, 10603 states have (on average 1.7854380835612562) internal successors, (18931), 10603 states have internal predecessors, (18931), 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 19:21:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10604 states to 10604 states and 18931 transitions. [2024-11-09 19:21:17,471 INFO L78 Accepts]: Start accepts. Automaton has 10604 states and 18931 transitions. Word has length 440 [2024-11-09 19:21:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:17,472 INFO L471 AbstractCegarLoop]: Abstraction has 10604 states and 18931 transitions. [2024-11-09 19:21:17,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 3 states have internal predecessors, (329), 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 19:21:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 10604 states and 18931 transitions. [2024-11-09 19:21:17,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-11-09 19:21:17,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:17,490 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:17,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:21:17,490 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:17,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:17,491 INFO L85 PathProgramCache]: Analyzing trace with hash -753761165, now seen corresponding path program 1 times [2024-11-09 19:21:17,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:17,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902990166] [2024-11-09 19:21:17,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:17,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-09 19:21:17,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:17,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902990166] [2024-11-09 19:21:17,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902990166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:17,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:17,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:17,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795341878] [2024-11-09 19:21:17,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:17,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:17,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:17,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:17,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:17,862 INFO L87 Difference]: Start difference. First operand 10604 states and 18931 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 19:21:18,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:18,648 INFO L93 Difference]: Finished difference Result 19535 states and 34961 transitions. [2024-11-09 19:21:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:18,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 469 [2024-11-09 19:21:18,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:18,671 INFO L225 Difference]: With dead ends: 19535 [2024-11-09 19:21:18,671 INFO L226 Difference]: Without dead ends: 10602 [2024-11-09 19:21:18,680 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 19:21:18,682 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 176 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:18,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 418 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:21:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10602 states. [2024-11-09 19:21:18,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10602 to 10602. [2024-11-09 19:21:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10602 states, 10601 states have (on average 1.7654938213376097) internal successors, (18716), 10601 states have internal predecessors, (18716), 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 19:21:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10602 states to 10602 states and 18716 transitions. [2024-11-09 19:21:18,831 INFO L78 Accepts]: Start accepts. Automaton has 10602 states and 18716 transitions. Word has length 469 [2024-11-09 19:21:18,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:18,832 INFO L471 AbstractCegarLoop]: Abstraction has 10602 states and 18716 transitions. [2024-11-09 19:21:18,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 19:21:18,832 INFO L276 IsEmpty]: Start isEmpty. Operand 10602 states and 18716 transitions. [2024-11-09 19:21:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-11-09 19:21:18,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:18,848 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:21:18,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:21:18,849 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:18,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:18,849 INFO L85 PathProgramCache]: Analyzing trace with hash 346987791, now seen corresponding path program 1 times [2024-11-09 19:21:18,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:18,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081358754] [2024-11-09 19:21:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:18,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 630 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-09 19:21:19,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:19,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081358754] [2024-11-09 19:21:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081358754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837634007] [2024-11-09 19:21:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:19,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:19,179 INFO L87 Difference]: Start difference. First operand 10602 states and 18716 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 19:21:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:19,997 INFO L93 Difference]: Finished difference Result 21382 states and 37818 transitions. [2024-11-09 19:21:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:19,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 506 [2024-11-09 19:21:19,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:20,022 INFO L225 Difference]: With dead ends: 21382 [2024-11-09 19:21:20,022 INFO L226 Difference]: Without dead ends: 12266 [2024-11-09 19:21:20,032 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 19:21:20,034 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 183 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:20,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 472 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:21:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12266 states. [2024-11-09 19:21:20,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12266 to 11711. [2024-11-09 19:21:20,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11711 states, 11710 states have (on average 1.7591801878736122) internal successors, (20600), 11710 states have internal predecessors, (20600), 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 19:21:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11711 states to 11711 states and 20600 transitions. [2024-11-09 19:21:20,196 INFO L78 Accepts]: Start accepts. Automaton has 11711 states and 20600 transitions. Word has length 506 [2024-11-09 19:21:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:20,196 INFO L471 AbstractCegarLoop]: Abstraction has 11711 states and 20600 transitions. [2024-11-09 19:21:20,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 19:21:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 11711 states and 20600 transitions. [2024-11-09 19:21:20,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-11-09 19:21:20,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:20,214 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:21:20,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:21:20,215 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:20,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:20,215 INFO L85 PathProgramCache]: Analyzing trace with hash 861357259, now seen corresponding path program 1 times [2024-11-09 19:21:20,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:20,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606927308] [2024-11-09 19:21:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:20,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 551 proven. 24 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2024-11-09 19:21:21,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606927308] [2024-11-09 19:21:21,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606927308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:21:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835911077] [2024-11-09 19:21:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:21,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:21:21,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:21:21,186 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 19:21:21,189 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 19:21:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:21,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:21:21,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:21:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 575 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2024-11-09 19:21:21,641 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:21:21,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835911077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:21,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:21:21,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:21:21,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958272618] [2024-11-09 19:21:21,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:21,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:21,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:21,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:21,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:21:21,644 INFO L87 Difference]: Start difference. First operand 11711 states and 20600 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 19:21:22,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:22,414 INFO L93 Difference]: Finished difference Result 23799 states and 41905 transitions. [2024-11-09 19:21:22,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:22,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 528 [2024-11-09 19:21:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:22,440 INFO L225 Difference]: With dead ends: 23799 [2024-11-09 19:21:22,441 INFO L226 Difference]: Without dead ends: 13759 [2024-11-09 19:21:22,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:21:22,453 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 208 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:22,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 81 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:21:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13759 states. [2024-11-09 19:21:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13759 to 11896. [2024-11-09 19:21:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11896 states, 11895 states have (on average 1.7583018074821353) internal successors, (20915), 11895 states have internal predecessors, (20915), 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 19:21:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11896 states to 11896 states and 20915 transitions. [2024-11-09 19:21:22,745 INFO L78 Accepts]: Start accepts. Automaton has 11896 states and 20915 transitions. Word has length 528 [2024-11-09 19:21:22,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:22,746 INFO L471 AbstractCegarLoop]: Abstraction has 11896 states and 20915 transitions. [2024-11-09 19:21:22,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 19:21:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 11896 states and 20915 transitions. [2024-11-09 19:21:22,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2024-11-09 19:21:22,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:22,775 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:21:22,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:21:22,976 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,SelfDestructingSolverStorable12 [2024-11-09 19:21:22,976 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:22,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:22,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1368230806, now seen corresponding path program 1 times [2024-11-09 19:21:22,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:22,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622069825] [2024-11-09 19:21:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:22,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 595 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-09 19:21:23,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:23,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622069825] [2024-11-09 19:21:23,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622069825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:23,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:23,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:23,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922460798] [2024-11-09 19:21:23,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:23,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:23,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:23,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:23,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:23,389 INFO L87 Difference]: Start difference. First operand 11896 states and 20915 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 19:21:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:24,197 INFO L93 Difference]: Finished difference Result 25471 states and 44844 transitions. [2024-11-09 19:21:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:24,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 529 [2024-11-09 19:21:24,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:24,217 INFO L225 Difference]: With dead ends: 25471 [2024-11-09 19:21:24,217 INFO L226 Difference]: Without dead ends: 13947 [2024-11-09 19:21:24,228 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 19:21:24,229 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 253 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:24,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 136 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:21:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13947 states. [2024-11-09 19:21:24,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13947 to 13760. [2024-11-09 19:21:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13760 states, 13759 states have (on average 1.7550694091140344) internal successors, (24148), 13759 states have internal predecessors, (24148), 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 19:21:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13760 states to 13760 states and 24148 transitions. [2024-11-09 19:21:24,416 INFO L78 Accepts]: Start accepts. Automaton has 13760 states and 24148 transitions. Word has length 529 [2024-11-09 19:21:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:24,416 INFO L471 AbstractCegarLoop]: Abstraction has 13760 states and 24148 transitions. [2024-11-09 19:21:24,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 19:21:24,417 INFO L276 IsEmpty]: Start isEmpty. Operand 13760 states and 24148 transitions. [2024-11-09 19:21:24,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-11-09 19:21:24,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:24,438 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:24,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:21:24,439 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:24,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash -356894155, now seen corresponding path program 1 times [2024-11-09 19:21:24,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:24,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902642752] [2024-11-09 19:21:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 628 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2024-11-09 19:21:24,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:24,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902642752] [2024-11-09 19:21:24,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902642752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:24,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:24,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:24,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282815324] [2024-11-09 19:21:24,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:24,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:24,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:24,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:24,878 INFO L87 Difference]: Start difference. First operand 13760 states and 24148 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 19:21:25,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:25,750 INFO L93 Difference]: Finished difference Result 31221 states and 54864 transitions. [2024-11-09 19:21:25,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:25,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 533 [2024-11-09 19:21:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:25,771 INFO L225 Difference]: With dead ends: 31221 [2024-11-09 19:21:25,771 INFO L226 Difference]: Without dead ends: 17833 [2024-11-09 19:21:25,782 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 19:21:25,783 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 244 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:25,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 89 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:21:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17833 states. [2024-11-09 19:21:25,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17833 to 17078. [2024-11-09 19:21:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17078 states, 17077 states have (on average 1.750717339111085) internal successors, (29897), 17077 states have internal predecessors, (29897), 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 19:21:25,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17078 states to 17078 states and 29897 transitions. [2024-11-09 19:21:25,993 INFO L78 Accepts]: Start accepts. Automaton has 17078 states and 29897 transitions. Word has length 533 [2024-11-09 19:21:25,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:25,994 INFO L471 AbstractCegarLoop]: Abstraction has 17078 states and 29897 transitions. [2024-11-09 19:21:25,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 19:21:25,994 INFO L276 IsEmpty]: Start isEmpty. Operand 17078 states and 29897 transitions. [2024-11-09 19:21:26,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2024-11-09 19:21:26,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:26,008 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:21:26,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:21:26,008 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:26,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:26,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1224692340, now seen corresponding path program 1 times [2024-11-09 19:21:26,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:26,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962930423] [2024-11-09 19:21:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 727 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-09 19:21:26,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:26,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962930423] [2024-11-09 19:21:26,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962930423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:26,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:26,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:26,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277463782] [2024-11-09 19:21:26,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:26,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:21:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:26,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:21:26,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:21:26,555 INFO L87 Difference]: Start difference. First operand 17078 states and 29897 transitions. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 3 states have internal predecessors, (397), 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 19:21:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:27,871 INFO L93 Difference]: Finished difference Result 38794 states and 67978 transitions. [2024-11-09 19:21:27,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:21:27,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 3 states have internal predecessors, (397), 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 539 [2024-11-09 19:21:27,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:27,898 INFO L225 Difference]: With dead ends: 38794 [2024-11-09 19:21:27,898 INFO L226 Difference]: Without dead ends: 23942 [2024-11-09 19:21:27,906 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 19:21:27,907 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 443 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:27,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 83 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 19:21:27,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23942 states. [2024-11-09 19:21:28,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23942 to 16895. [2024-11-09 19:21:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16895 states, 16894 states have (on average 1.7529300343317153) internal successors, (29614), 16894 states have internal predecessors, (29614), 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 19:21:28,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16895 states to 16895 states and 29614 transitions. [2024-11-09 19:21:28,226 INFO L78 Accepts]: Start accepts. Automaton has 16895 states and 29614 transitions. Word has length 539 [2024-11-09 19:21:28,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:28,226 INFO L471 AbstractCegarLoop]: Abstraction has 16895 states and 29614 transitions. [2024-11-09 19:21:28,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 3 states have internal predecessors, (397), 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 19:21:28,227 INFO L276 IsEmpty]: Start isEmpty. Operand 16895 states and 29614 transitions. [2024-11-09 19:21:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2024-11-09 19:21:28,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:28,251 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, 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, 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, 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] [2024-11-09 19:21:28,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:21:28,251 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:28,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1069813432, now seen corresponding path program 1 times [2024-11-09 19:21:28,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:28,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36470906] [2024-11-09 19:21:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:28,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1316 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-11-09 19:21:28,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:28,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36470906] [2024-11-09 19:21:28,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36470906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:28,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:28,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:21:28,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869234738] [2024-11-09 19:21:28,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:28,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:28,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:21:28,871 INFO L87 Difference]: Start difference. First operand 16895 states and 29614 transitions. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 19:21:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:29,606 INFO L93 Difference]: Finished difference Result 32499 states and 57005 transitions. [2024-11-09 19:21:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:29,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 636 [2024-11-09 19:21:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:29,624 INFO L225 Difference]: With dead ends: 32499 [2024-11-09 19:21:29,624 INFO L226 Difference]: Without dead ends: 17830 [2024-11-09 19:21:29,635 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 19:21:29,636 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 253 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:29,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 142 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:21:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17830 states. [2024-11-09 19:21:29,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17830 to 16525. [2024-11-09 19:21:29,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16525 states, 16524 states have (on average 1.752481239409344) internal successors, (28958), 16524 states have internal predecessors, (28958), 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 19:21:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16525 states to 16525 states and 28958 transitions. [2024-11-09 19:21:29,805 INFO L78 Accepts]: Start accepts. Automaton has 16525 states and 28958 transitions. Word has length 636 [2024-11-09 19:21:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:29,805 INFO L471 AbstractCegarLoop]: Abstraction has 16525 states and 28958 transitions. [2024-11-09 19:21:29,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 19:21:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 16525 states and 28958 transitions. [2024-11-09 19:21:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2024-11-09 19:21:29,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:29,826 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, 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, 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, 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] [2024-11-09 19:21:29,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:21:29,826 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:29,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash -571868966, now seen corresponding path program 1 times [2024-11-09 19:21:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961986260] [2024-11-09 19:21:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 1165 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-09 19:21:30,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961986260] [2024-11-09 19:21:30,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961986260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:30,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:30,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:21:30,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864506023] [2024-11-09 19:21:30,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:30,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:21:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:30,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:21:30,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:21:30,594 INFO L87 Difference]: Start difference. First operand 16525 states and 28958 transitions. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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 19:21:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:31,901 INFO L93 Difference]: Finished difference Result 36946 states and 64863 transitions. [2024-11-09 19:21:31,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:21:31,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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 668 [2024-11-09 19:21:31,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:31,927 INFO L225 Difference]: With dead ends: 36946 [2024-11-09 19:21:31,927 INFO L226 Difference]: Without dead ends: 22647 [2024-11-09 19:21:31,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 19:21:31,940 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 453 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:31,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 79 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 19:21:31,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22647 states. [2024-11-09 19:21:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22647 to 18011. [2024-11-09 19:21:32,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18011 states, 18010 states have (on average 1.7581343697945586) internal successors, (31664), 18010 states have internal predecessors, (31664), 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 19:21:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18011 states to 18011 states and 31664 transitions. [2024-11-09 19:21:32,213 INFO L78 Accepts]: Start accepts. Automaton has 18011 states and 31664 transitions. Word has length 668 [2024-11-09 19:21:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:32,214 INFO L471 AbstractCegarLoop]: Abstraction has 18011 states and 31664 transitions. [2024-11-09 19:21:32,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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 19:21:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 18011 states and 31664 transitions. [2024-11-09 19:21:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2024-11-09 19:21:32,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:32,228 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, 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, 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, 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] [2024-11-09 19:21:32,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 19:21:32,228 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:32,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:32,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1058370170, now seen corresponding path program 1 times [2024-11-09 19:21:32,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:32,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998234796] [2024-11-09 19:21:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:32,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1374 backedges. 890 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 19:21:33,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:33,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998234796] [2024-11-09 19:21:33,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998234796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:33,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:21:33,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 19:21:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059071544] [2024-11-09 19:21:33,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:33,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 19:21:33,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:33,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 19:21:33,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:21:33,760 INFO L87 Difference]: Start difference. First operand 18011 states and 31664 transitions. Second operand has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 6 states have internal predecessors, (417), 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 19:21:35,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:35,539 INFO L93 Difference]: Finished difference Result 38062 states and 66906 transitions. [2024-11-09 19:21:35,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 19:21:35,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 6 states have internal predecessors, (417), 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 691 [2024-11-09 19:21:35,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:35,562 INFO L225 Difference]: With dead ends: 38062 [2024-11-09 19:21:35,563 INFO L226 Difference]: Without dead ends: 20423 [2024-11-09 19:21:35,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:21:35,574 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 489 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2958 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:35,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 243 Invalid, 2988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2958 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 19:21:35,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20423 states. [2024-11-09 19:21:35,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20423 to 20417. [2024-11-09 19:21:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20417 states, 20416 states have (on average 1.7556818181818181) internal successors, (35844), 20416 states have internal predecessors, (35844), 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 19:21:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20417 states to 20417 states and 35844 transitions. [2024-11-09 19:21:35,842 INFO L78 Accepts]: Start accepts. Automaton has 20417 states and 35844 transitions. Word has length 691 [2024-11-09 19:21:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:35,843 INFO L471 AbstractCegarLoop]: Abstraction has 20417 states and 35844 transitions. [2024-11-09 19:21:35,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 6 states have internal predecessors, (417), 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 19:21:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 20417 states and 35844 transitions. [2024-11-09 19:21:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2024-11-09 19:21:35,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:35,859 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, 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, 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, 3, 3, 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] [2024-11-09 19:21:35,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 19:21:35,859 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:35,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:35,860 INFO L85 PathProgramCache]: Analyzing trace with hash 692575784, now seen corresponding path program 1 times [2024-11-09 19:21:35,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:35,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860046127] [2024-11-09 19:21:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:35,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 912 proven. 8 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 19:21:37,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:37,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860046127] [2024-11-09 19:21:37,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860046127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:21:37,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906743797] [2024-11-09 19:21:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:37,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:21:37,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:21:37,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:21:37,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:21:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:37,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 19:21:37,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:21:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 798 proven. 122 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 19:21:38,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:21:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 798 proven. 122 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-09 19:21:41,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906743797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:21:41,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:21:41,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 10 [2024-11-09 19:21:41,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70566026] [2024-11-09 19:21:41,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:21:41,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 19:21:41,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:41,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 19:21:41,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-09 19:21:41,748 INFO L87 Difference]: Start difference. First operand 20417 states and 35844 transitions. Second operand has 11 states, 11 states have (on average 90.81818181818181) internal successors, (999), 10 states have internal predecessors, (999), 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 19:21:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:47,107 INFO L93 Difference]: Finished difference Result 47508 states and 83302 transitions. [2024-11-09 19:21:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 19:21:47,108 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 90.81818181818181) internal successors, (999), 10 states have internal predecessors, (999), 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 701 [2024-11-09 19:21:47,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:47,149 INFO L225 Difference]: With dead ends: 47508 [2024-11-09 19:21:47,149 INFO L226 Difference]: Without dead ends: 27091 [2024-11-09 19:21:47,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1423 GetRequests, 1399 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=436, Unknown=0, NotChecked=0, Total=650 [2024-11-09 19:21:47,163 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 3284 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 6740 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3284 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 7322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 6740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:47,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3284 Valid, 223 Invalid, 7322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 6740 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-09 19:21:47,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27091 states. [2024-11-09 19:21:47,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27091 to 16150. [2024-11-09 19:21:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16150 states, 16149 states have (on average 1.720539971515264) internal successors, (27785), 16149 states have internal predecessors, (27785), 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 19:21:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16150 states to 16150 states and 27785 transitions. [2024-11-09 19:21:47,461 INFO L78 Accepts]: Start accepts. Automaton has 16150 states and 27785 transitions. Word has length 701 [2024-11-09 19:21:47,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:47,461 INFO L471 AbstractCegarLoop]: Abstraction has 16150 states and 27785 transitions. [2024-11-09 19:21:47,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 90.81818181818181) internal successors, (999), 10 states have internal predecessors, (999), 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 19:21:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 16150 states and 27785 transitions. [2024-11-09 19:21:47,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2024-11-09 19:21:47,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:21:47,489 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:21:47,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 19:21:47,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-09 19:21:47,690 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:21:47,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:21:47,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1146026235, now seen corresponding path program 1 times [2024-11-09 19:21:47,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:21:47,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897014041] [2024-11-09 19:21:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:47,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:21:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2691 backedges. 1667 proven. 64 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2024-11-09 19:21:48,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:21:48,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897014041] [2024-11-09 19:21:48,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897014041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:21:48,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660601406] [2024-11-09 19:21:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:21:48,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:21:48,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:21:48,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:21:48,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:21:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:21:48,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:21:48,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:21:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2691 backedges. 1501 proven. 0 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2024-11-09 19:21:49,148 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:21:49,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660601406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:21:49,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:21:49,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:21:49,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119431847] [2024-11-09 19:21:49,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:21:49,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:21:49,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:21:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:21:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:21:49,151 INFO L87 Difference]: Start difference. First operand 16150 states and 27785 transitions. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 19:21:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:21:49,856 INFO L93 Difference]: Finished difference Result 28781 states and 49430 transitions. [2024-11-09 19:21:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:21:49,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 917 [2024-11-09 19:21:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:21:49,858 INFO L225 Difference]: With dead ends: 28781 [2024-11-09 19:21:49,858 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 19:21:49,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:21:49,868 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 178 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:21:49,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 108 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:21:49,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 19:21:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 19:21:49,869 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 19:21:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 19:21:49,869 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 917 [2024-11-09 19:21:49,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:21:49,869 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 19:21:49,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 19:21:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 19:21:49,870 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 19:21:49,872 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 19:21:49,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:21:50,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:21:50,076 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:21:50,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 19:21:53,832 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 19:21:53,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:21:53 BoogieIcfgContainer [2024-11-09 19:21:53,848 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 19:21:53,848 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 19:21:53,851 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 19:21:53,852 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 19:21:53,852 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:21:02" (3/4) ... [2024-11-09 19:21:53,854 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 19:21:53,887 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 19:21:53,889 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 19:21:53,891 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 19:21:53,892 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 19:21:54,083 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 19:21:54,083 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 19:21:54,083 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 19:21:54,084 INFO L158 Benchmark]: Toolchain (without parser) took 54586.56ms. Allocated memory was 184.5MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 122.5MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 264.9MB. Max. memory is 16.1GB. [2024-11-09 19:21:54,086 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 184.5MB. Free memory was 146.9MB in the beginning and 146.7MB in the end (delta: 243.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 19:21:54,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 738.05ms. Allocated memory is still 184.5MB. Free memory was 122.1MB in the beginning and 75.1MB in the end (delta: 47.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-11-09 19:21:54,087 INFO L158 Benchmark]: Boogie Procedure Inliner took 135.43ms. Allocated memory is still 184.5MB. Free memory was 75.1MB in the beginning and 57.5MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 19:21:54,087 INFO L158 Benchmark]: Boogie Preprocessor took 252.34ms. Allocated memory was 184.5MB in the beginning and 310.4MB in the end (delta: 125.8MB). Free memory was 57.5MB in the beginning and 251.7MB in the end (delta: -194.2MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2024-11-09 19:21:54,087 INFO L158 Benchmark]: IcfgBuilder took 2026.29ms. Allocated memory is still 310.4MB. Free memory was 251.7MB in the beginning and 165.6MB in the end (delta: 86.1MB). Peak memory consumption was 125.8MB. Max. memory is 16.1GB. [2024-11-09 19:21:54,087 INFO L158 Benchmark]: TraceAbstraction took 51191.60ms. Allocated memory was 310.4MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 165.6MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-11-09 19:21:54,088 INFO L158 Benchmark]: Witness Printer took 234.85ms. Allocated memory is still 2.2GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 19:21:54,089 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 184.5MB. Free memory was 146.9MB in the beginning and 146.7MB in the end (delta: 243.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 738.05ms. Allocated memory is still 184.5MB. Free memory was 122.1MB in the beginning and 75.1MB in the end (delta: 47.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 135.43ms. Allocated memory is still 184.5MB. Free memory was 75.1MB in the beginning and 57.5MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 252.34ms. Allocated memory was 184.5MB in the beginning and 310.4MB in the end (delta: 125.8MB). Free memory was 57.5MB in the beginning and 251.7MB in the end (delta: -194.2MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * IcfgBuilder took 2026.29ms. Allocated memory is still 310.4MB. Free memory was 251.7MB in the beginning and 165.6MB in the end (delta: 86.1MB). Peak memory consumption was 125.8MB. Max. memory is 16.1GB. * TraceAbstraction took 51191.60ms. Allocated memory was 310.4MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 165.6MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 234.85ms. Allocated memory is still 2.2GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. 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: 205]: 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, 286 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.3s, OverallIterations: 21, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 26.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9036 SdHoareTripleChecker+Valid, 23.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9036 mSDsluCounter, 4483 SdHoareTripleChecker+Invalid, 19.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 737 mSDsCounter, 2674 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26459 IncrementalHoareTripleChecker+Invalid, 29133 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2674 mSolverCounterUnsat, 3746 mSDtfsCounter, 26459 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2933 GetRequests, 2873 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20417occurred in iteration=19, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 27695 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 11503 NumberOfCodeBlocks, 11503 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 12179 ConstructedInterpolants, 0 QuantifiedInterpolants, 45237 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2730 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 25 InterpolantComputations, 20 PerfectInterpolantSequences, 21390/21730 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: 1044]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-09 19:21:54,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE