./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label39.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/Problem03_label39.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 e75b25accfa51338058ad16425748718d01a5d94bd667d18c22ba63a9d75c3da --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:40:57,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:40:57,633 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:40:57,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:40:57,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:40:57,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:40:57,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:40:57,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:40:57,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:40:57,686 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:40:57,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:40:57,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:40:57,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:40:57,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:40:57,690 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:40:57,690 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:40:57,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:40:57,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:40:57,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:40:57,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:40:57,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:40:57,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:40:57,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:40:57,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:40:57,696 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:40:57,696 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:40:57,696 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:40:57,697 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:40:57,697 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:40:57,697 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:40:57,697 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:40:57,697 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:40:57,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:40:57,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:40:57,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:40:57,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:40:57,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:40:57,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:40:57,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:40:57,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:40:57,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:40:57,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:40:57,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e75b25accfa51338058ad16425748718d01a5d94bd667d18c22ba63a9d75c3da [2024-11-09 18:40:58,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:40:58,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:40:58,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:40:58,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:40:58,075 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:40:58,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label39.c [2024-11-09 18:40:59,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:40:59,934 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:40:59,934 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label39.c [2024-11-09 18:40:59,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f13ef3d/6638f6dfec0748678f744206762a5bc4/FLAGa49000101 [2024-11-09 18:40:59,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f13ef3d/6638f6dfec0748678f744206762a5bc4 [2024-11-09 18:40:59,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:40:59,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:40:59,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:40:59,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:40:59,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:40:59,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:40:59" (1/1) ... [2024-11-09 18:40:59,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6296722a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:40:59, skipping insertion in model container [2024-11-09 18:40:59,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:40:59" (1/1) ... [2024-11-09 18:41:00,059 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:41:00,621 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/Problem03_label39.c[54057,54070] [2024-11-09 18:41:00,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:41:00,701 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:41:00,837 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/Problem03_label39.c[54057,54070] [2024-11-09 18:41:00,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:41:00,875 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:41:00,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00 WrapperNode [2024-11-09 18:41:00,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:41:00,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:41:00,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:41:00,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:41:00,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:00,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,022 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-09 18:41:01,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:41:01,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:41:01,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:41:01,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:41:01,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,055 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,099 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 18:41:01,103 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,151 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,165 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,181 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:41:01,182 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:41:01,183 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:41:01,183 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:41:01,184 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (1/1) ... [2024-11-09 18:41:01,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:41:01,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:01,221 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 18:41:01,270 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 18:41:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:41:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:41:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:41:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:41:01,509 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:41:01,512 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:41:03,492 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-09 18:41:03,493 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:41:03,519 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:41:03,521 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:41:03,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:41:03 BoogieIcfgContainer [2024-11-09 18:41:03,522 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:41:03,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:41:03,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:41:03,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:41:03,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:40:59" (1/3) ... [2024-11-09 18:41:03,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168e4b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:41:03, skipping insertion in model container [2024-11-09 18:41:03,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:41:00" (2/3) ... [2024-11-09 18:41:03,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168e4b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:41:03, skipping insertion in model container [2024-11-09 18:41:03,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:41:03" (3/3) ... [2024-11-09 18:41:03,533 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label39.c [2024-11-09 18:41:03,551 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:41:03,551 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:41:03,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:41:03,643 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;@2b8f3432, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:41:03,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:41:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 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 18:41:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-09 18:41:03,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:03,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:03,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:03,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:03,676 INFO L85 PathProgramCache]: Analyzing trace with hash 57709245, now seen corresponding path program 1 times [2024-11-09 18:41:03,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:03,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056300623] [2024-11-09 18:41:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:03,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:04,558 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 18:41:04,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:04,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056300623] [2024-11-09 18:41:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056300623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:04,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:04,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:04,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900663228] [2024-11-09 18:41:04,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:04,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:04,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:04,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:04,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:04,604 INFO L87 Difference]: Start difference. First operand has 305 states, 303 states have (on average 1.7227722772277227) internal successors, (522), 304 states have internal predecessors, (522), 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 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 18:41:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:05,695 INFO L93 Difference]: Finished difference Result 870 states and 1520 transitions. [2024-11-09 18:41:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:05,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 149 [2024-11-09 18:41:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:05,716 INFO L225 Difference]: With dead ends: 870 [2024-11-09 18:41:05,716 INFO L226 Difference]: Without dead ends: 471 [2024-11-09 18:41:05,722 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 18:41:05,727 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 131 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:05,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 170 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 18:41:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2024-11-09 18:41:05,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 457. [2024-11-09 18:41:05,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.6228070175438596) internal successors, (740), 456 states have internal predecessors, (740), 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 18:41:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 740 transitions. [2024-11-09 18:41:05,794 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 740 transitions. Word has length 149 [2024-11-09 18:41:05,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:05,794 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 740 transitions. [2024-11-09 18:41:05,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 18:41:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 740 transitions. [2024-11-09 18:41:05,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-09 18:41:05,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:05,798 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:05,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:41:05,799 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:05,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:05,800 INFO L85 PathProgramCache]: Analyzing trace with hash 138964421, now seen corresponding path program 1 times [2024-11-09 18:41:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:05,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704058605] [2024-11-09 18:41:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:05,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704058605] [2024-11-09 18:41:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704058605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:06,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:06,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130834631] [2024-11-09 18:41:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:06,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:06,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:06,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:06,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:06,185 INFO L87 Difference]: Start difference. First operand 457 states and 740 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 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 18:41:06,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:06,483 INFO L93 Difference]: Finished difference Result 1367 states and 2216 transitions. [2024-11-09 18:41:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:06,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 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 155 [2024-11-09 18:41:06,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:06,488 INFO L225 Difference]: With dead ends: 1367 [2024-11-09 18:41:06,489 INFO L226 Difference]: Without dead ends: 912 [2024-11-09 18:41:06,491 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 18:41:06,492 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 367 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:06,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 600 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:41:06,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-09 18:41:06,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 909. [2024-11-09 18:41:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 1.618942731277533) internal successors, (1470), 908 states have internal predecessors, (1470), 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 18:41:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1470 transitions. [2024-11-09 18:41:06,534 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1470 transitions. Word has length 155 [2024-11-09 18:41:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:06,534 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1470 transitions. [2024-11-09 18:41:06,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 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 18:41:06,535 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1470 transitions. [2024-11-09 18:41:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-09 18:41:06,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:06,542 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:06,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:41:06,542 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:06,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:06,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1912655564, now seen corresponding path program 1 times [2024-11-09 18:41:06,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:06,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484258124] [2024-11-09 18:41:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:06,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:06,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:06,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484258124] [2024-11-09 18:41:06,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484258124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:06,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:06,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:06,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583044622] [2024-11-09 18:41:06,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:06,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:06,843 INFO L87 Difference]: Start difference. First operand 909 states and 1470 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 18:41:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:07,704 INFO L93 Difference]: Finished difference Result 2634 states and 4284 transitions. [2024-11-09 18:41:07,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:07,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 156 [2024-11-09 18:41:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:07,711 INFO L225 Difference]: With dead ends: 2634 [2024-11-09 18:41:07,711 INFO L226 Difference]: Without dead ends: 1727 [2024-11-09 18:41:07,713 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 18:41:07,714 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 218 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:07,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 201 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:41:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2024-11-09 18:41:07,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1727. [2024-11-09 18:41:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1726 states have (on average 1.4020857473928157) internal successors, (2420), 1726 states have internal predecessors, (2420), 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 18:41:07,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2420 transitions. [2024-11-09 18:41:07,756 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2420 transitions. Word has length 156 [2024-11-09 18:41:07,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:07,757 INFO L471 AbstractCegarLoop]: Abstraction has 1727 states and 2420 transitions. [2024-11-09 18:41:07,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 18:41:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2420 transitions. [2024-11-09 18:41:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-09 18:41:07,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:07,765 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:07,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:41:07,766 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:07,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:07,766 INFO L85 PathProgramCache]: Analyzing trace with hash -904305801, now seen corresponding path program 1 times [2024-11-09 18:41:07,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:07,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466189034] [2024-11-09 18:41:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:07,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:07,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:07,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466189034] [2024-11-09 18:41:07,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466189034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:07,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:07,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:07,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782798115] [2024-11-09 18:41:07,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:07,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:07,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:07,916 INFO L87 Difference]: Start difference. First operand 1727 states and 2420 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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 18:41:08,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:08,788 INFO L93 Difference]: Finished difference Result 5115 states and 7189 transitions. [2024-11-09 18:41:08,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:08,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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 158 [2024-11-09 18:41:08,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:08,801 INFO L225 Difference]: With dead ends: 5115 [2024-11-09 18:41:08,802 INFO L226 Difference]: Without dead ends: 3390 [2024-11-09 18:41:08,806 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 18:41:08,807 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 250 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:08,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 94 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:41:08,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2024-11-09 18:41:08,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 3362. [2024-11-09 18:41:08,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3362 states, 3361 states have (on average 1.3766736090449272) internal successors, (4627), 3361 states have internal predecessors, (4627), 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 18:41:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3362 states to 3362 states and 4627 transitions. [2024-11-09 18:41:08,880 INFO L78 Accepts]: Start accepts. Automaton has 3362 states and 4627 transitions. Word has length 158 [2024-11-09 18:41:08,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:08,880 INFO L471 AbstractCegarLoop]: Abstraction has 3362 states and 4627 transitions. [2024-11-09 18:41:08,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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 18:41:08,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3362 states and 4627 transitions. [2024-11-09 18:41:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-09 18:41:08,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:08,886 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:08,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 18:41:08,887 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:08,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash -610139199, now seen corresponding path program 1 times [2024-11-09 18:41:08,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:08,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506712156] [2024-11-09 18:41:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:08,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:09,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:09,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506712156] [2024-11-09 18:41:09,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506712156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:09,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:09,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:09,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312629704] [2024-11-09 18:41:09,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:09,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:09,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:09,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:09,264 INFO L87 Difference]: Start difference. First operand 3362 states and 4627 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 18:41:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:10,189 INFO L93 Difference]: Finished difference Result 10032 states and 13811 transitions. [2024-11-09 18:41:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:10,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 162 [2024-11-09 18:41:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:10,218 INFO L225 Difference]: With dead ends: 10032 [2024-11-09 18:41:10,218 INFO L226 Difference]: Without dead ends: 6672 [2024-11-09 18:41:10,225 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 18:41:10,229 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 287 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:10,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 102 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:41:10,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6672 states. [2024-11-09 18:41:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6672 to 6666. [2024-11-09 18:41:10,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6666 states, 6665 states have (on average 1.350787696924231) internal successors, (9003), 6665 states have internal predecessors, (9003), 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 18:41:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6666 states to 6666 states and 9003 transitions. [2024-11-09 18:41:10,381 INFO L78 Accepts]: Start accepts. Automaton has 6666 states and 9003 transitions. Word has length 162 [2024-11-09 18:41:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:10,382 INFO L471 AbstractCegarLoop]: Abstraction has 6666 states and 9003 transitions. [2024-11-09 18:41:10,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 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 18:41:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6666 states and 9003 transitions. [2024-11-09 18:41:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-09 18:41:10,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:10,390 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:10,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 18:41:10,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:10,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash 838410826, now seen corresponding path program 1 times [2024-11-09 18:41:10,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:10,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377160515] [2024-11-09 18:41:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:10,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:41:10,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:10,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377160515] [2024-11-09 18:41:10,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377160515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:10,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:10,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:41:10,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948116348] [2024-11-09 18:41:10,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:10,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:10,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:10,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:10,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:10,698 INFO L87 Difference]: Start difference. First operand 6666 states and 9003 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 18:41:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:11,550 INFO L93 Difference]: Finished difference Result 19880 states and 26858 transitions. [2024-11-09 18:41:11,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:11,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 166 [2024-11-09 18:41:11,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:11,604 INFO L225 Difference]: With dead ends: 19880 [2024-11-09 18:41:11,605 INFO L226 Difference]: Without dead ends: 13216 [2024-11-09 18:41:11,613 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 18:41:11,615 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 118 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:11,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 386 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:41:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13216 states. [2024-11-09 18:41:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13216 to 11574. [2024-11-09 18:41:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11574 states, 11573 states have (on average 1.2940464875140414) internal successors, (14976), 11573 states have internal predecessors, (14976), 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 18:41:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11574 states to 11574 states and 14976 transitions. [2024-11-09 18:41:11,858 INFO L78 Accepts]: Start accepts. Automaton has 11574 states and 14976 transitions. Word has length 166 [2024-11-09 18:41:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:11,860 INFO L471 AbstractCegarLoop]: Abstraction has 11574 states and 14976 transitions. [2024-11-09 18:41:11,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 18:41:11,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11574 states and 14976 transitions. [2024-11-09 18:41:11,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-09 18:41:11,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:11,873 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:11,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 18:41:11,874 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:11,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:11,874 INFO L85 PathProgramCache]: Analyzing trace with hash -636861530, now seen corresponding path program 1 times [2024-11-09 18:41:11,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:11,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328769403] [2024-11-09 18:41:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:11,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:41:12,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:12,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328769403] [2024-11-09 18:41:12,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328769403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:12,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:12,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:41:12,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480423045] [2024-11-09 18:41:12,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:12,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:12,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:12,176 INFO L87 Difference]: Start difference. First operand 11574 states and 14976 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 18:41:13,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:13,062 INFO L93 Difference]: Finished difference Result 28870 states and 38453 transitions. [2024-11-09 18:41:13,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:13,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-11-09 18:41:13,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:13,094 INFO L225 Difference]: With dead ends: 28870 [2024-11-09 18:41:13,095 INFO L226 Difference]: Without dead ends: 17298 [2024-11-09 18:41:13,115 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 18:41:13,116 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 235 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:13,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 409 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:41:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17298 states. [2024-11-09 18:41:13,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17298 to 15658. [2024-11-09 18:41:13,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15658 states, 15657 states have (on average 1.252985884907709) internal successors, (19618), 15657 states have internal predecessors, (19618), 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 18:41:13,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15658 states to 15658 states and 19618 transitions. [2024-11-09 18:41:13,456 INFO L78 Accepts]: Start accepts. Automaton has 15658 states and 19618 transitions. Word has length 173 [2024-11-09 18:41:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:13,457 INFO L471 AbstractCegarLoop]: Abstraction has 15658 states and 19618 transitions. [2024-11-09 18:41:13,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 18:41:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 15658 states and 19618 transitions. [2024-11-09 18:41:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-09 18:41:13,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:13,474 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:13,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 18:41:13,474 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:13,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash 362076222, now seen corresponding path program 1 times [2024-11-09 18:41:13,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:13,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26957564] [2024-11-09 18:41:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:13,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:13,965 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 18:41:13,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26957564] [2024-11-09 18:41:13,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26957564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:13,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:13,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:41:13,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977798861] [2024-11-09 18:41:13,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:13,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:41:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:41:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:41:13,970 INFO L87 Difference]: Start difference. First operand 15658 states and 19618 transitions. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 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 18:41:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:15,084 INFO L93 Difference]: Finished difference Result 42288 states and 52702 transitions. [2024-11-09 18:41:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:41:15,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 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 247 [2024-11-09 18:41:15,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:15,205 INFO L225 Difference]: With dead ends: 42288 [2024-11-09 18:41:15,206 INFO L226 Difference]: Without dead ends: 26632 [2024-11-09 18:41:15,223 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 18:41:15,225 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 452 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:15,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 61 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 18:41:15,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26632 states. [2024-11-09 18:41:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26632 to 26628. [2024-11-09 18:41:15,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26628 states, 26627 states have (on average 1.1795921433131784) internal successors, (31409), 26627 states have internal predecessors, (31409), 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 18:41:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26628 states to 26628 states and 31409 transitions. [2024-11-09 18:41:15,642 INFO L78 Accepts]: Start accepts. Automaton has 26628 states and 31409 transitions. Word has length 247 [2024-11-09 18:41:15,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:15,643 INFO L471 AbstractCegarLoop]: Abstraction has 26628 states and 31409 transitions. [2024-11-09 18:41:15,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 3 states have internal predecessors, (237), 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 18:41:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 26628 states and 31409 transitions. [2024-11-09 18:41:15,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-09 18:41:15,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:15,661 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:41:15,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 18:41:15,661 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:15,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:15,662 INFO L85 PathProgramCache]: Analyzing trace with hash -160740556, now seen corresponding path program 1 times [2024-11-09 18:41:15,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:15,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308835454] [2024-11-09 18:41:15,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:15,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:16,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:16,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308835454] [2024-11-09 18:41:16,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308835454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:16,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648191731] [2024-11-09 18:41:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:16,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:16,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:16,151 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 18:41:16,152 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 18:41:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:16,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:41:16,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-09 18:41:16,751 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648191731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:16,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:16,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 18:41:16,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048976569] [2024-11-09 18:41:16,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:16,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:16,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:16,753 INFO L87 Difference]: Start difference. First operand 26628 states and 31409 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 18:41:17,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:17,614 INFO L93 Difference]: Finished difference Result 53258 states and 62824 transitions. [2024-11-09 18:41:17,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:17,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 252 [2024-11-09 18:41:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:17,668 INFO L225 Difference]: With dead ends: 53258 [2024-11-09 18:41:17,668 INFO L226 Difference]: Without dead ends: 26632 [2024-11-09 18:41:17,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:17,698 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 109 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:17,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 113 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:41:17,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26632 states. [2024-11-09 18:41:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26632 to 24584. [2024-11-09 18:41:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24584 states, 24583 states have (on average 1.14916812431355) internal successors, (28250), 24583 states have internal predecessors, (28250), 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 18:41:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24584 states to 24584 states and 28250 transitions. [2024-11-09 18:41:18,183 INFO L78 Accepts]: Start accepts. Automaton has 24584 states and 28250 transitions. Word has length 252 [2024-11-09 18:41:18,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:18,184 INFO L471 AbstractCegarLoop]: Abstraction has 24584 states and 28250 transitions. [2024-11-09 18:41:18,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 18:41:18,184 INFO L276 IsEmpty]: Start isEmpty. Operand 24584 states and 28250 transitions. [2024-11-09 18:41:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-09 18:41:18,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:18,206 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:18,224 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 18:41:18,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:18,407 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:18,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:18,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1892124766, now seen corresponding path program 1 times [2024-11-09 18:41:18,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:18,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701628411] [2024-11-09 18:41:18,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:18,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:18,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:18,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701628411] [2024-11-09 18:41:18,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701628411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:18,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:18,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:41:18,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376723272] [2024-11-09 18:41:18,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:18,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:18,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:18,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:18,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:18,704 INFO L87 Difference]: Start difference. First operand 24584 states and 28250 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 18:41:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:19,855 INFO L93 Difference]: Finished difference Result 66310 states and 75971 transitions. [2024-11-09 18:41:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:19,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 261 [2024-11-09 18:41:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:19,923 INFO L225 Difference]: With dead ends: 66310 [2024-11-09 18:41:19,924 INFO L226 Difference]: Without dead ends: 41728 [2024-11-09 18:41:19,940 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 18:41:19,941 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 246 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:19,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 337 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:41:19,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41728 states. [2024-11-09 18:41:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41728 to 39684. [2024-11-09 18:41:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39684 states, 39683 states have (on average 1.1188418214348714) internal successors, (44399), 39683 states have internal predecessors, (44399), 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 18:41:20,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39684 states to 39684 states and 44399 transitions. [2024-11-09 18:41:20,709 INFO L78 Accepts]: Start accepts. Automaton has 39684 states and 44399 transitions. Word has length 261 [2024-11-09 18:41:20,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:20,709 INFO L471 AbstractCegarLoop]: Abstraction has 39684 states and 44399 transitions. [2024-11-09 18:41:20,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 18:41:20,710 INFO L276 IsEmpty]: Start isEmpty. Operand 39684 states and 44399 transitions. [2024-11-09 18:41:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-09 18:41:20,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:20,730 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:20,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 18:41:20,730 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:20,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1463334471, now seen corresponding path program 1 times [2024-11-09 18:41:20,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:20,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086806573] [2024-11-09 18:41:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:20,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:41:21,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:21,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086806573] [2024-11-09 18:41:21,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086806573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:21,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:21,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:41:21,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510837188] [2024-11-09 18:41:21,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:21,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:21,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:21,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:21,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:21,433 INFO L87 Difference]: Start difference. First operand 39684 states and 44399 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 18:41:22,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:22,242 INFO L93 Difference]: Finished difference Result 78154 states and 87504 transitions. [2024-11-09 18:41:22,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:22,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 281 [2024-11-09 18:41:22,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:22,289 INFO L225 Difference]: With dead ends: 78154 [2024-11-09 18:41:22,289 INFO L226 Difference]: Without dead ends: 38472 [2024-11-09 18:41:22,323 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 18:41:22,323 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 117 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:22,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 296 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:41:22,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38472 states. [2024-11-09 18:41:22,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38472 to 35604. [2024-11-09 18:41:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35604 states, 35603 states have (on average 1.109934556076735) internal successors, (39517), 35603 states have internal predecessors, (39517), 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 18:41:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35604 states to 35604 states and 39517 transitions. [2024-11-09 18:41:23,016 INFO L78 Accepts]: Start accepts. Automaton has 35604 states and 39517 transitions. Word has length 281 [2024-11-09 18:41:23,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:23,017 INFO L471 AbstractCegarLoop]: Abstraction has 35604 states and 39517 transitions. [2024-11-09 18:41:23,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 18:41:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 35604 states and 39517 transitions. [2024-11-09 18:41:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-09 18:41:23,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:23,047 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:41:23,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 18:41:23,048 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:23,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash -966984931, now seen corresponding path program 1 times [2024-11-09 18:41:23,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:23,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222639526] [2024-11-09 18:41:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:23,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:23,818 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 18:41:23,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:23,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222639526] [2024-11-09 18:41:23,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222639526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:23,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:23,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:41:23,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325626633] [2024-11-09 18:41:23,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:23,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:23,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:23,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:23,821 INFO L87 Difference]: Start difference. First operand 35604 states and 39517 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 18:41:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:24,709 INFO L93 Difference]: Finished difference Result 79802 states and 88544 transitions. [2024-11-09 18:41:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:24,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 303 [2024-11-09 18:41:24,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:24,838 INFO L225 Difference]: With dead ends: 79802 [2024-11-09 18:41:24,838 INFO L226 Difference]: Without dead ends: 44200 [2024-11-09 18:41:24,860 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 18:41:24,861 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 89 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:24,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 348 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:41:24,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44200 states. [2024-11-09 18:41:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44200 to 40500. [2024-11-09 18:41:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40500 states, 40499 states have (on average 1.1047927109311342) internal successors, (44743), 40499 states have internal predecessors, (44743), 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 18:41:25,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40500 states to 40500 states and 44743 transitions. [2024-11-09 18:41:25,423 INFO L78 Accepts]: Start accepts. Automaton has 40500 states and 44743 transitions. Word has length 303 [2024-11-09 18:41:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:25,424 INFO L471 AbstractCegarLoop]: Abstraction has 40500 states and 44743 transitions. [2024-11-09 18:41:25,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 18:41:25,424 INFO L276 IsEmpty]: Start isEmpty. Operand 40500 states and 44743 transitions. [2024-11-09 18:41:25,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-09 18:41:25,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:25,442 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:41:25,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 18:41:25,442 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:25,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1174529121, now seen corresponding path program 1 times [2024-11-09 18:41:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:25,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947370170] [2024-11-09 18:41:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 18:41:26,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:26,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947370170] [2024-11-09 18:41:26,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947370170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:26,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:26,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:41:26,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382865285] [2024-11-09 18:41:26,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:26,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:41:26,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:41:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:41:26,261 INFO L87 Difference]: Start difference. First operand 40500 states and 44743 transitions. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 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 18:41:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:27,504 INFO L93 Difference]: Finished difference Result 86754 states and 95964 transitions. [2024-11-09 18:41:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:41:27,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 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 318 [2024-11-09 18:41:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:27,554 INFO L225 Difference]: With dead ends: 86754 [2024-11-09 18:41:27,555 INFO L226 Difference]: Without dead ends: 46256 [2024-11-09 18:41:27,582 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 18:41:27,582 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 312 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:27,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 86 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 18:41:27,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46256 states. [2024-11-09 18:41:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46256 to 40500. [2024-11-09 18:41:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40500 states, 40499 states have (on average 1.1047927109311342) internal successors, (44743), 40499 states have internal predecessors, (44743), 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 18:41:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40500 states to 40500 states and 44743 transitions. [2024-11-09 18:41:28,255 INFO L78 Accepts]: Start accepts. Automaton has 40500 states and 44743 transitions. Word has length 318 [2024-11-09 18:41:28,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:28,357 INFO L471 AbstractCegarLoop]: Abstraction has 40500 states and 44743 transitions. [2024-11-09 18:41:28,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 3 states have internal predecessors, (318), 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 18:41:28,358 INFO L276 IsEmpty]: Start isEmpty. Operand 40500 states and 44743 transitions. [2024-11-09 18:41:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-09 18:41:28,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:28,377 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:41:28,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 18:41:28,377 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:28,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:28,378 INFO L85 PathProgramCache]: Analyzing trace with hash -982147470, now seen corresponding path program 1 times [2024-11-09 18:41:28,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:28,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095740638] [2024-11-09 18:41:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-09 18:41:29,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095740638] [2024-11-09 18:41:29,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095740638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:29,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633265899] [2024-11-09 18:41:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:29,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:29,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:29,948 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 18:41:29,950 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 18:41:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:30,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:41:30,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-09 18:41:30,377 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:30,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633265899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:30,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:30,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 18:41:30,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79070864] [2024-11-09 18:41:30,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:30,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:30,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:30,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:30,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:30,379 INFO L87 Difference]: Start difference. First operand 40500 states and 44743 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 18:41:31,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:31,129 INFO L93 Difference]: Finished difference Result 84294 states and 93211 transitions. [2024-11-09 18:41:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:31,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 326 [2024-11-09 18:41:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:31,191 INFO L225 Difference]: With dead ends: 84294 [2024-11-09 18:41:31,192 INFO L226 Difference]: Without dead ends: 43796 [2024-11-09 18:41:31,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 18:41:31,224 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 77 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:31,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 369 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:41:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43796 states. [2024-11-09 18:41:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43796 to 41316. [2024-11-09 18:41:31,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41316 states, 41315 states have (on average 1.10170640203316) internal successors, (45517), 41315 states have internal predecessors, (45517), 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 18:41:31,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41316 states to 41316 states and 45517 transitions. [2024-11-09 18:41:31,895 INFO L78 Accepts]: Start accepts. Automaton has 41316 states and 45517 transitions. Word has length 326 [2024-11-09 18:41:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:31,896 INFO L471 AbstractCegarLoop]: Abstraction has 41316 states and 45517 transitions. [2024-11-09 18:41:31,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 18:41:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 41316 states and 45517 transitions. [2024-11-09 18:41:31,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-09 18:41:31,922 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:31,922 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:31,960 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 18:41:32,125 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,SelfDestructingSolverStorable13 [2024-11-09 18:41:32,126 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:32,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash -32696536, now seen corresponding path program 1 times [2024-11-09 18:41:32,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:32,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084007045] [2024-11-09 18:41:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-09 18:41:32,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:32,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084007045] [2024-11-09 18:41:32,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084007045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:32,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:32,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:41:32,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606265388] [2024-11-09 18:41:32,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:32,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:32,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:32,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:32,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:41:32,434 INFO L87 Difference]: Start difference. First operand 41316 states and 45517 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 18:41:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:33,407 INFO L93 Difference]: Finished difference Result 103509 states and 114274 transitions. [2024-11-09 18:41:33,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:33,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 384 [2024-11-09 18:41:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:33,480 INFO L225 Difference]: With dead ends: 103509 [2024-11-09 18:41:33,480 INFO L226 Difference]: Without dead ends: 62195 [2024-11-09 18:41:33,512 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 18:41:33,512 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 207 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:33,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 107 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 18:41:33,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62195 states. [2024-11-09 18:41:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62195 to 61368. [2024-11-09 18:41:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61368 states, 61367 states have (on average 1.1053660762298956) internal successors, (67833), 61367 states have internal predecessors, (67833), 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 18:41:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61368 states to 61368 states and 67833 transitions. [2024-11-09 18:41:34,308 INFO L78 Accepts]: Start accepts. Automaton has 61368 states and 67833 transitions. Word has length 384 [2024-11-09 18:41:34,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:34,309 INFO L471 AbstractCegarLoop]: Abstraction has 61368 states and 67833 transitions. [2024-11-09 18:41:34,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 18:41:34,309 INFO L276 IsEmpty]: Start isEmpty. Operand 61368 states and 67833 transitions. [2024-11-09 18:41:34,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-09 18:41:34,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:34,344 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:34,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 18:41:34,345 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:34,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:34,350 INFO L85 PathProgramCache]: Analyzing trace with hash 823466299, now seen corresponding path program 1 times [2024-11-09 18:41:34,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:34,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355217692] [2024-11-09 18:41:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:34,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 166 proven. 7 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-09 18:41:35,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:35,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355217692] [2024-11-09 18:41:35,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355217692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:35,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868467271] [2024-11-09 18:41:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:35,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:35,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:35,258 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 18:41:35,261 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 18:41:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:35,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:41:35,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-09 18:41:35,687 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:35,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868467271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:35,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:35,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-09 18:41:35,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870895882] [2024-11-09 18:41:35,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:35,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:35,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:35,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:35,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:35,689 INFO L87 Difference]: Start difference. First operand 61368 states and 67833 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 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 18:41:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:36,387 INFO L93 Difference]: Finished difference Result 174096 states and 192276 transitions. [2024-11-09 18:41:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:41:36,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 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 392 [2024-11-09 18:41:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:36,554 INFO L225 Difference]: With dead ends: 174096 [2024-11-09 18:41:36,554 INFO L226 Difference]: Without dead ends: 112730 [2024-11-09 18:41:36,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:36,599 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 207 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:36,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 554 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:41:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112730 states. [2024-11-09 18:41:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112730 to 112727. [2024-11-09 18:41:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112727 states, 112726 states have (on average 1.1033656831609389) internal successors, (124378), 112726 states have internal predecessors, (124378), 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 18:41:38,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112727 states to 112727 states and 124378 transitions. [2024-11-09 18:41:38,401 INFO L78 Accepts]: Start accepts. Automaton has 112727 states and 124378 transitions. Word has length 392 [2024-11-09 18:41:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:38,401 INFO L471 AbstractCegarLoop]: Abstraction has 112727 states and 124378 transitions. [2024-11-09 18:41:38,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 2 states have internal predecessors, (282), 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 18:41:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 112727 states and 124378 transitions. [2024-11-09 18:41:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-09 18:41:38,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:38,443 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:41:38,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 18:41:38,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:38,644 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:38,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:38,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1821617461, now seen corresponding path program 1 times [2024-11-09 18:41:38,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:38,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811187907] [2024-11-09 18:41:38,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:38,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-11-09 18:41:39,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:39,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811187907] [2024-11-09 18:41:39,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811187907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:39,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:41:39,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:41:39,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132709285] [2024-11-09 18:41:39,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:39,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 18:41:39,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:39,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 18:41:39,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 18:41:39,249 INFO L87 Difference]: Start difference. First operand 112727 states and 124378 transitions. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 3 states have internal predecessors, (258), 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 18:41:40,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:40,871 INFO L93 Difference]: Finished difference Result 236568 states and 261164 transitions. [2024-11-09 18:41:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 18:41:40,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 3 states have internal predecessors, (258), 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 418 [2024-11-09 18:41:40,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:41,046 INFO L225 Difference]: With dead ends: 236568 [2024-11-09 18:41:41,046 INFO L226 Difference]: Without dead ends: 123843 [2024-11-09 18:41:41,512 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 18:41:41,514 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 475 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:41,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 93 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 18:41:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123843 states. [2024-11-09 18:41:42,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123843 to 117215. [2024-11-09 18:41:42,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117215 states, 117214 states have (on average 1.0827375569471223) internal successors, (126912), 117214 states have internal predecessors, (126912), 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 18:41:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117215 states to 117215 states and 126912 transitions. [2024-11-09 18:41:43,044 INFO L78 Accepts]: Start accepts. Automaton has 117215 states and 126912 transitions. Word has length 418 [2024-11-09 18:41:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:43,044 INFO L471 AbstractCegarLoop]: Abstraction has 117215 states and 126912 transitions. [2024-11-09 18:41:43,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 3 states have internal predecessors, (258), 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 18:41:43,044 INFO L276 IsEmpty]: Start isEmpty. Operand 117215 states and 126912 transitions. [2024-11-09 18:41:43,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-11-09 18:41:43,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:43,080 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:41:43,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 18:41:43,080 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:43,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1605629453, now seen corresponding path program 1 times [2024-11-09 18:41:43,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:43,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029030830] [2024-11-09 18:41:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 386 proven. 126 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 18:41:44,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029030830] [2024-11-09 18:41:44,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029030830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549360108] [2024-11-09 18:41:44,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:44,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:44,186 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:44,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:41:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:44,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 18:41:44,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 418 proven. 31 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-09 18:41:45,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:41:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 418 proven. 31 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-09 18:41:45,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549360108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:41:45,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:41:45,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 18:41:45,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658849349] [2024-11-09 18:41:45,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:41:45,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 18:41:45,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:45,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 18:41:45,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-09 18:41:45,405 INFO L87 Difference]: Start difference. First operand 117215 states and 126912 transitions. Second operand has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 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 18:41:49,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:41:49,963 INFO L93 Difference]: Finished difference Result 450713 states and 488836 transitions. [2024-11-09 18:41:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 18:41:49,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 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 442 [2024-11-09 18:41:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:41:50,421 INFO L225 Difference]: With dead ends: 450713 [2024-11-09 18:41:50,422 INFO L226 Difference]: Without dead ends: 333500 [2024-11-09 18:41:50,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 898 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-09 18:41:50,948 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 2782 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2782 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 3728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 18:41:50,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2782 Valid, 197 Invalid, 3728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 2900 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 18:41:51,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333500 states. [2024-11-09 18:41:55,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333500 to 324475. [2024-11-09 18:41:56,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324475 states, 324474 states have (on average 1.0818678846379062) internal successors, (351038), 324474 states have internal predecessors, (351038), 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 18:41:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324475 states to 324475 states and 351038 transitions. [2024-11-09 18:41:56,676 INFO L78 Accepts]: Start accepts. Automaton has 324475 states and 351038 transitions. Word has length 442 [2024-11-09 18:41:56,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:41:56,676 INFO L471 AbstractCegarLoop]: Abstraction has 324475 states and 351038 transitions. [2024-11-09 18:41:56,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 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 18:41:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 324475 states and 351038 transitions. [2024-11-09 18:41:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-09 18:41:56,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:41:56,713 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 18:41:56,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 18:41:56,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 18:41:56,914 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:41:56,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:41:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash -706045002, now seen corresponding path program 1 times [2024-11-09 18:41:56,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:41:56,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923830571] [2024-11-09 18:41:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:56,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:41:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 202 proven. 7 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2024-11-09 18:41:58,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:41:58,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923830571] [2024-11-09 18:41:58,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923830571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:41:58,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079383530] [2024-11-09 18:41:58,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:41:58,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:41:58,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:41:58,204 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:41:58,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:41:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:41:58,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:41:58,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:41:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 18:41:58,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:41:58,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079383530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:41:58,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:41:58,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 18:41:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579108092] [2024-11-09 18:41:58,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:41:58,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:41:58,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:41:58,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:41:58,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:41:58,633 INFO L87 Difference]: Start difference. First operand 324475 states and 351038 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 18:42:01,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:42:01,821 INFO L93 Difference]: Finished difference Result 634298 states and 686443 transitions. [2024-11-09 18:42:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:42:01,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 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 454 [2024-11-09 18:42:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:42:02,380 INFO L225 Difference]: With dead ends: 634298 [2024-11-09 18:42:02,381 INFO L226 Difference]: Without dead ends: 309825 [2024-11-09 18:42:02,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:42:02,579 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 132 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 18:42:02,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 121 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 18:42:02,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309825 states. [2024-11-09 18:42:06,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309825 to 299537. [2024-11-09 18:42:06,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299537 states, 299536 states have (on average 1.071841114256717) internal successors, (321055), 299536 states have internal predecessors, (321055), 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)