./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label53.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 d47a87af871ac94bbcea7d3dd980f2dd1a9893e716b88333a075adbedab63554 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:20:43,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:20:44,045 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:20:44,048 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:20:44,048 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:20:44,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:20:44,075 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:20:44,075 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:20:44,075 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:20:44,082 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:20:44,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:20:44,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:20:44,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:20:44,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:20:44,085 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:20:44,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:20:44,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:20:44,086 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:20:44,086 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:20:44,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:20:44,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:20:44,089 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:20:44,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:20:44,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:20:44,090 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:20:44,090 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:20:44,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:20:44,090 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:20:44,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:20:44,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:20:44,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:20:44,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:20:44,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:20:44,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:20:44,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:20:44,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:20:44,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:20:44,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:20:44,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:20:44,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:20:44,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:20:44,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:20:44,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d47a87af871ac94bbcea7d3dd980f2dd1a9893e716b88333a075adbedab63554 [2024-10-12 16:20:44,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:20:44,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:20:44,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:20:44,325 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:20:44,325 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:20:44,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label53.c [2024-10-12 16:20:45,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:20:45,752 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:20:45,753 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label53.c [2024-10-12 16:20:45,770 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8b728e40/d2e4702f08f5400eab29189d56fd426b/FLAG7a243a5e3 [2024-10-12 16:20:45,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8b728e40/d2e4702f08f5400eab29189d56fd426b [2024-10-12 16:20:45,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:20:45,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:20:45,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:20:45,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:20:45,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:20:45,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:20:45" (1/1) ... [2024-10-12 16:20:45,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c7597e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:45, skipping insertion in model container [2024-10-12 16:20:45,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:20:45" (1/1) ... [2024-10-12 16:20:45,861 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:20:46,089 WARN L248 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/Problem15_label53.c[5826,5839] [2024-10-12 16:20:46,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:20:46,357 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:20:46,380 WARN L248 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/Problem15_label53.c[5826,5839] [2024-10-12 16:20:46,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:20:46,534 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:20:46,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46 WrapperNode [2024-10-12 16:20:46,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:20:46,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:20:46,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:20:46,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:20:46,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,673 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2024-10-12 16:20:46,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:20:46,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:20:46,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:20:46,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:20:46,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,698 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,797 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]. [2024-10-12 16:20:46,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:20:46,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:20:46,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:20:46,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:20:46,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (1/1) ... [2024-10-12 16:20:46,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:20:46,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:20:46,933 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) [2024-10-12 16:20:46,938 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 [2024-10-12 16:20:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:20:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:20:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:20:46,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:20:47,050 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:20:47,052 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:20:48,775 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-10-12 16:20:48,775 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:20:48,820 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:20:48,821 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:20:48,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:20:48 BoogieIcfgContainer [2024-10-12 16:20:48,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:20:48,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:20:48,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:20:48,826 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:20:48,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:20:45" (1/3) ... [2024-10-12 16:20:48,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1630f61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:20:48, skipping insertion in model container [2024-10-12 16:20:48,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:20:46" (2/3) ... [2024-10-12 16:20:48,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1630f61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:20:48, skipping insertion in model container [2024-10-12 16:20:48,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:20:48" (3/3) ... [2024-10-12 16:20:48,828 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label53.c [2024-10-12 16:20:48,840 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:20:48,840 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:20:48,893 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:20:48,899 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;@5ebc6a48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:20:48,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:20:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 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) [2024-10-12 16:20:48,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 16:20:48,912 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:20:48,912 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] [2024-10-12 16:20:48,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:20:48,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:20:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1957014475, now seen corresponding path program 1 times [2024-10-12 16:20:48,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:20:48,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452483074] [2024-10-12 16:20:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:20:48,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:20:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:20:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:20:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:20:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452483074] [2024-10-12 16:20:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452483074] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:20:49,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:20:49,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:20:49,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682805800] [2024-10-12 16:20:49,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:20:49,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:20:49,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:20:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:20:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:20:49,095 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 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 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-10-12 16:20:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:20:49,139 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2024-10-12 16:20:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:20:49,141 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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 46 [2024-10-12 16:20:49,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:20:49,155 INFO L225 Difference]: With dead ends: 723 [2024-10-12 16:20:49,155 INFO L226 Difference]: Without dead ends: 360 [2024-10-12 16:20:49,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:20:49,163 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:20:49,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:20:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-12 16:20:49,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-10-12 16:20:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 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) [2024-10-12 16:20:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2024-10-12 16:20:49,203 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 46 [2024-10-12 16:20:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:20:49,204 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2024-10-12 16:20:49,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-10-12 16:20:49,204 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2024-10-12 16:20:49,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-12 16:20:49,205 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:20:49,205 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] [2024-10-12 16:20:49,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:20:49,206 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:20:49,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:20:49,206 INFO L85 PathProgramCache]: Analyzing trace with hash -218355349, now seen corresponding path program 1 times [2024-10-12 16:20:49,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:20:49,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074295216] [2024-10-12 16:20:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:20:49,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:20:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:20:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:20:49,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:20:49,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074295216] [2024-10-12 16:20:49,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074295216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:20:49,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:20:49,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:20:49,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335594749] [2024-10-12 16:20:49,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:20:49,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:20:49,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:20:49,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:20:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:20:49,337 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-10-12 16:20:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:20:51,070 INFO L93 Difference]: Finished difference Result 1023 states and 1787 transitions. [2024-10-12 16:20:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:20:51,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 46 [2024-10-12 16:20:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:20:51,074 INFO L225 Difference]: With dead ends: 1023 [2024-10-12 16:20:51,074 INFO L226 Difference]: Without dead ends: 664 [2024-10-12 16:20:51,075 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 [2024-10-12 16:20:51,076 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 270 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:20:51,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 316 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 16:20:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-10-12 16:20:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 662. [2024-10-12 16:20:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.4826021180030258) internal successors, (980), 661 states have internal predecessors, (980), 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) [2024-10-12 16:20:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 980 transitions. [2024-10-12 16:20:51,108 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 980 transitions. Word has length 46 [2024-10-12 16:20:51,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:20:51,109 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 980 transitions. [2024-10-12 16:20:51,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-10-12 16:20:51,109 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 980 transitions. [2024-10-12 16:20:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-12 16:20:51,112 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:20:51,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:20:51,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:20:51,113 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:20:51,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:20:51,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1748753149, now seen corresponding path program 1 times [2024-10-12 16:20:51,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:20:51,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976098629] [2024-10-12 16:20:51,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:20:51,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:20:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:20:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:20:51,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:20:51,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976098629] [2024-10-12 16:20:51,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976098629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:20:51,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:20:51,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:20:51,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351670086] [2024-10-12 16:20:51,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:20:51,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:20:51,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:20:51,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:20:51,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:20:51,354 INFO L87 Difference]: Start difference. First operand 662 states and 980 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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) [2024-10-12 16:20:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:20:52,332 INFO L93 Difference]: Finished difference Result 1623 states and 2314 transitions. [2024-10-12 16:20:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:20:52,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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 111 [2024-10-12 16:20:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:20:52,336 INFO L225 Difference]: With dead ends: 1623 [2024-10-12 16:20:52,336 INFO L226 Difference]: Without dead ends: 962 [2024-10-12 16:20:52,337 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 [2024-10-12 16:20:52,338 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 237 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:20:52,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 335 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:20:52,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-10-12 16:20:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 962. [2024-10-12 16:20:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 1.3631633714880333) internal successors, (1310), 961 states have internal predecessors, (1310), 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) [2024-10-12 16:20:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1310 transitions. [2024-10-12 16:20:52,355 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1310 transitions. Word has length 111 [2024-10-12 16:20:52,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:20:52,355 INFO L471 AbstractCegarLoop]: Abstraction has 962 states and 1310 transitions. [2024-10-12 16:20:52,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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) [2024-10-12 16:20:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1310 transitions. [2024-10-12 16:20:52,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-12 16:20:52,357 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:20:52,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:20:52,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:20:52,358 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:20:52,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:20:52,358 INFO L85 PathProgramCache]: Analyzing trace with hash 336816928, now seen corresponding path program 1 times [2024-10-12 16:20:52,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:20:52,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666780781] [2024-10-12 16:20:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:20:52,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:20:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:20:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:20:52,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:20:52,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666780781] [2024-10-12 16:20:52,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666780781] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:20:52,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:20:52,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:20:52,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776541099] [2024-10-12 16:20:52,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:20:52,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:20:52,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:20:52,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:20:52,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:20:52,490 INFO L87 Difference]: Start difference. First operand 962 states and 1310 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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) [2024-10-12 16:20:53,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:20:53,649 INFO L93 Difference]: Finished difference Result 2228 states and 3185 transitions. [2024-10-12 16:20:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:20:53,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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 116 [2024-10-12 16:20:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:20:53,656 INFO L225 Difference]: With dead ends: 2228 [2024-10-12 16:20:53,656 INFO L226 Difference]: Without dead ends: 1566 [2024-10-12 16:20:53,657 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 [2024-10-12 16:20:53,660 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 256 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:20:53,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 316 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:20:53,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-10-12 16:20:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1265. [2024-10-12 16:20:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1264 states have (on average 1.3045886075949367) internal successors, (1649), 1264 states have internal predecessors, (1649), 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) [2024-10-12 16:20:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1649 transitions. [2024-10-12 16:20:53,678 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1649 transitions. Word has length 116 [2024-10-12 16:20:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:20:53,678 INFO L471 AbstractCegarLoop]: Abstraction has 1265 states and 1649 transitions. [2024-10-12 16:20:53,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 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) [2024-10-12 16:20:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1649 transitions. [2024-10-12 16:20:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-12 16:20:53,684 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:20:53,684 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:20:53,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:20:53,684 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:20:53,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:20:53,685 INFO L85 PathProgramCache]: Analyzing trace with hash -293309380, now seen corresponding path program 1 times [2024-10-12 16:20:53,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:20:53,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688205448] [2024-10-12 16:20:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:20:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:20:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:20:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:20:53,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:20:53,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688205448] [2024-10-12 16:20:53,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688205448] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:20:53,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:20:53,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:20:53,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650748233] [2024-10-12 16:20:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:20:53,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:20:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:20:53,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:20:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:20:53,909 INFO L87 Difference]: Start difference. First operand 1265 states and 1649 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 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) [2024-10-12 16:20:56,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:20:56,045 INFO L93 Difference]: Finished difference Result 4667 states and 6168 transitions. [2024-10-12 16:20:56,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:20:56,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 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 212 [2024-10-12 16:20:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:20:56,054 INFO L225 Difference]: With dead ends: 4667 [2024-10-12 16:20:56,054 INFO L226 Difference]: Without dead ends: 3403 [2024-10-12 16:20:56,055 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 [2024-10-12 16:20:56,056 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 484 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:20:56,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 374 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 16:20:56,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2024-10-12 16:20:56,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 3380. [2024-10-12 16:20:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3380 states, 3379 states have (on average 1.2364604912696064) internal successors, (4178), 3379 states have internal predecessors, (4178), 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) [2024-10-12 16:20:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 4178 transitions. [2024-10-12 16:20:56,090 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 4178 transitions. Word has length 212 [2024-10-12 16:20:56,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:20:56,091 INFO L471 AbstractCegarLoop]: Abstraction has 3380 states and 4178 transitions. [2024-10-12 16:20:56,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 3 states have internal predecessors, (212), 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) [2024-10-12 16:20:56,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 4178 transitions. [2024-10-12 16:20:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-10-12 16:20:56,094 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:20:56,094 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:20:56,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:20:56,094 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:20:56,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:20:56,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1541794874, now seen corresponding path program 1 times [2024-10-12 16:20:56,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:20:56,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016009555] [2024-10-12 16:20:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:20:56,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:20:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:20:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-10-12 16:20:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:20:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016009555] [2024-10-12 16:20:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016009555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:20:56,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:20:56,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:20:56,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514671303] [2024-10-12 16:20:56,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:20:56,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:20:56,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:20:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:20:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:20:56,215 INFO L87 Difference]: Start difference. First operand 3380 states and 4178 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2024-10-12 16:20:57,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:20:57,240 INFO L93 Difference]: Finished difference Result 8562 states and 10750 transitions. [2024-10-12 16:20:57,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:20:57,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 216 [2024-10-12 16:20:57,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:20:57,253 INFO L225 Difference]: With dead ends: 8562 [2024-10-12 16:20:57,253 INFO L226 Difference]: Without dead ends: 5482 [2024-10-12 16:20:57,257 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 [2024-10-12 16:20:57,257 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:20:57,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 337 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:20:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2024-10-12 16:20:57,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5477. [2024-10-12 16:20:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5477 states, 5476 states have (on average 1.1683710737764792) internal successors, (6398), 5476 states have internal predecessors, (6398), 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) [2024-10-12 16:20:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 6398 transitions. [2024-10-12 16:20:57,321 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 6398 transitions. Word has length 216 [2024-10-12 16:20:57,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:20:57,321 INFO L471 AbstractCegarLoop]: Abstraction has 5477 states and 6398 transitions. [2024-10-12 16:20:57,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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) [2024-10-12 16:20:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 6398 transitions. [2024-10-12 16:20:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-10-12 16:20:57,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:20:57,324 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:20:57,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:20:57,325 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:20:57,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:20:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash -625102498, now seen corresponding path program 1 times [2024-10-12 16:20:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:20:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601353364] [2024-10-12 16:20:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:20:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:20:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:20:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-12 16:20:57,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:20:57,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601353364] [2024-10-12 16:20:57,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601353364] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:20:57,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:20:57,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:20:57,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359155052] [2024-10-12 16:20:57,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:20:57,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:20:57,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:20:57,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:20:57,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:20:57,871 INFO L87 Difference]: Start difference. First operand 5477 states and 6398 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 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) [2024-10-12 16:20:58,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:20:58,846 INFO L93 Difference]: Finished difference Result 10654 states and 12484 transitions. [2024-10-12 16:20:58,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:20:58,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 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 [2024-10-12 16:20:58,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:20:58,858 INFO L225 Difference]: With dead ends: 10654 [2024-10-12 16:20:58,859 INFO L226 Difference]: Without dead ends: 5477 [2024-10-12 16:20:58,863 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 [2024-10-12 16:20:58,864 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:20:58,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 357 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:20:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2024-10-12 16:20:58,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 5477. [2024-10-12 16:20:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5477 states, 5476 states have (on average 1.1672753834915996) internal successors, (6392), 5476 states have internal predecessors, (6392), 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) [2024-10-12 16:20:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5477 states to 5477 states and 6392 transitions. [2024-10-12 16:20:58,924 INFO L78 Accepts]: Start accepts. Automaton has 5477 states and 6392 transitions. Word has length 318 [2024-10-12 16:20:58,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:20:58,925 INFO L471 AbstractCegarLoop]: Abstraction has 5477 states and 6392 transitions. [2024-10-12 16:20:58,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 2 states have internal predecessors, (274), 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) [2024-10-12 16:20:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5477 states and 6392 transitions. [2024-10-12 16:20:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-10-12 16:20:58,928 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:20:58,928 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:20:58,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:20:58,929 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:20:58,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:20:58,929 INFO L85 PathProgramCache]: Analyzing trace with hash 499325211, now seen corresponding path program 1 times [2024-10-12 16:20:58,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:20:58,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730745297] [2024-10-12 16:20:58,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:20:58,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:20:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:20:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-12 16:20:59,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:20:59,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730745297] [2024-10-12 16:20:59,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730745297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:20:59,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:20:59,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:20:59,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806453812] [2024-10-12 16:20:59,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:20:59,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:20:59,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:20:59,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:20:59,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:20:59,122 INFO L87 Difference]: Start difference. First operand 5477 states and 6392 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2024-10-12 16:21:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:00,320 INFO L93 Difference]: Finished difference Result 11850 states and 14144 transitions. [2024-10-12 16:21:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:00,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 333 [2024-10-12 16:21:00,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:00,335 INFO L225 Difference]: With dead ends: 11850 [2024-10-12 16:21:00,336 INFO L226 Difference]: Without dead ends: 6673 [2024-10-12 16:21:00,341 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 [2024-10-12 16:21:00,342 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 267 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:00,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 320 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:21:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6673 states. [2024-10-12 16:21:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6673 to 4576. [2024-10-12 16:21:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4575 states have (on average 1.1840437158469945) internal successors, (5417), 4575 states have internal predecessors, (5417), 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) [2024-10-12 16:21:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 5417 transitions. [2024-10-12 16:21:00,410 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 5417 transitions. Word has length 333 [2024-10-12 16:21:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:00,410 INFO L471 AbstractCegarLoop]: Abstraction has 4576 states and 5417 transitions. [2024-10-12 16:21:00,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2024-10-12 16:21:00,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 5417 transitions. [2024-10-12 16:21:00,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-10-12 16:21:00,414 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:00,415 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:00,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:21:00,415 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:00,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:00,415 INFO L85 PathProgramCache]: Analyzing trace with hash -345370996, now seen corresponding path program 1 times [2024-10-12 16:21:00,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:00,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735212221] [2024-10-12 16:21:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:00,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 89 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:01,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:01,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735212221] [2024-10-12 16:21:01,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735212221] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:21:01,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243223228] [2024-10-12 16:21:01,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:01,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:21:01,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:21:01,282 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) [2024-10-12 16:21:01,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:21:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:01,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:21:01,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:21:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:21:01,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:21:01,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243223228] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:01,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:21:01,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 16:21:01,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933457538] [2024-10-12 16:21:01,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:01,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:01,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:01,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:01,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:21:01,529 INFO L87 Difference]: Start difference. First operand 4576 states and 5417 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2024-10-12 16:21:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:02,684 INFO L93 Difference]: Finished difference Result 10957 states and 13238 transitions. [2024-10-12 16:21:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:02,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 [2024-10-12 16:21:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:02,698 INFO L225 Difference]: With dead ends: 10957 [2024-10-12 16:21:02,699 INFO L226 Difference]: Without dead ends: 6681 [2024-10-12 16:21:02,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:21:02,703 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 248 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:02,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 343 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:21:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6681 states. [2024-10-12 16:21:02,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6681 to 6379. [2024-10-12 16:21:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6379 states, 6378 states have (on average 1.1665098777046097) internal successors, (7440), 6378 states have internal predecessors, (7440), 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) [2024-10-12 16:21:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6379 states to 6379 states and 7440 transitions. [2024-10-12 16:21:02,778 INFO L78 Accepts]: Start accepts. Automaton has 6379 states and 7440 transitions. Word has length 392 [2024-10-12 16:21:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:02,778 INFO L471 AbstractCegarLoop]: Abstraction has 6379 states and 7440 transitions. [2024-10-12 16:21:02,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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) [2024-10-12 16:21:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6379 states and 7440 transitions. [2024-10-12 16:21:02,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-10-12 16:21:02,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:02,783 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:02,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 16:21:02,988 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 [2024-10-12 16:21:02,989 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:02,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1216801727, now seen corresponding path program 1 times [2024-10-12 16:21:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162779492] [2024-10-12 16:21:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 291 proven. 39 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-12 16:21:03,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162779492] [2024-10-12 16:21:03,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162779492] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:21:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476594319] [2024-10-12 16:21:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:03,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:21:03,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:21:03,395 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) [2024-10-12 16:21:03,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:21:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:03,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 16:21:03,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:21:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-12 16:21:04,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:21:04,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476594319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:04,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:21:04,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 16:21:04,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208448033] [2024-10-12 16:21:04,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:04,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:21:04,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:04,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:21:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:21:04,185 INFO L87 Difference]: Start difference. First operand 6379 states and 7440 transitions. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 3 states have internal predecessors, (365), 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) [2024-10-12 16:21:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:05,401 INFO L93 Difference]: Finished difference Result 14255 states and 16510 transitions. [2024-10-12 16:21:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:21:05,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 3 states have internal predecessors, (365), 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 409 [2024-10-12 16:21:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:05,411 INFO L225 Difference]: With dead ends: 14255 [2024-10-12 16:21:05,412 INFO L226 Difference]: Without dead ends: 7578 [2024-10-12 16:21:05,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:21:05,417 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 317 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:05,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 361 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:21:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7578 states. [2024-10-12 16:21:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7578 to 6977. [2024-10-12 16:21:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6977 states, 6976 states have (on average 1.1551032110091743) internal successors, (8058), 6976 states have internal predecessors, (8058), 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) [2024-10-12 16:21:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 8058 transitions. [2024-10-12 16:21:05,499 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 8058 transitions. Word has length 409 [2024-10-12 16:21:05,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:05,499 INFO L471 AbstractCegarLoop]: Abstraction has 6977 states and 8058 transitions. [2024-10-12 16:21:05,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 3 states have internal predecessors, (365), 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) [2024-10-12 16:21:05,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 8058 transitions. [2024-10-12 16:21:05,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2024-10-12 16:21:05,503 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:05,504 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:05,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 16:21:05,705 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,SelfDestructingSolverStorable9 [2024-10-12 16:21:05,723 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:05,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:05,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1081720450, now seen corresponding path program 1 times [2024-10-12 16:21:05,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:05,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946839733] [2024-10-12 16:21:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-12 16:21:05,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:05,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946839733] [2024-10-12 16:21:05,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946839733] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:05,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:05,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:05,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602800650] [2024-10-12 16:21:05,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:05,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:05,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:05,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:05,946 INFO L87 Difference]: Start difference. First operand 6977 states and 8058 transitions. Second operand has 3 states, 3 states have (on average 106.0) 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) [2024-10-12 16:21:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:07,001 INFO L93 Difference]: Finished difference Result 16048 states and 18802 transitions. [2024-10-12 16:21:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:07,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) 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 423 [2024-10-12 16:21:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:07,016 INFO L225 Difference]: With dead ends: 16048 [2024-10-12 16:21:07,016 INFO L226 Difference]: Without dead ends: 9072 [2024-10-12 16:21:07,022 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 [2024-10-12 16:21:07,023 INFO L432 NwaCegarLoop]: 576 mSDtfsCounter, 281 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:07,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 614 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:21:07,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2024-10-12 16:21:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 8771. [2024-10-12 16:21:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8771 states, 8770 states have (on average 1.1389965792474344) internal successors, (9989), 8770 states have internal predecessors, (9989), 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) [2024-10-12 16:21:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8771 states to 8771 states and 9989 transitions. [2024-10-12 16:21:07,093 INFO L78 Accepts]: Start accepts. Automaton has 8771 states and 9989 transitions. Word has length 423 [2024-10-12 16:21:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:07,096 INFO L471 AbstractCegarLoop]: Abstraction has 8771 states and 9989 transitions. [2024-10-12 16:21:07,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) 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) [2024-10-12 16:21:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 8771 states and 9989 transitions. [2024-10-12 16:21:07,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-10-12 16:21:07,100 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:07,101 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:07,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:21:07,101 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:07,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:07,103 INFO L85 PathProgramCache]: Analyzing trace with hash 666603861, now seen corresponding path program 1 times [2024-10-12 16:21:07,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:07,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054716988] [2024-10-12 16:21:07,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:07,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-10-12 16:21:07,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054716988] [2024-10-12 16:21:07,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054716988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:07,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:07,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330088084] [2024-10-12 16:21:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:07,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:07,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:07,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:07,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:07,322 INFO L87 Difference]: Start difference. First operand 8771 states and 9989 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2024-10-12 16:21:08,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:08,268 INFO L93 Difference]: Finished difference Result 17838 states and 20374 transitions. [2024-10-12 16:21:08,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:08,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 547 [2024-10-12 16:21:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:08,280 INFO L225 Difference]: With dead ends: 17838 [2024-10-12 16:21:08,280 INFO L226 Difference]: Without dead ends: 9068 [2024-10-12 16:21:08,288 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 [2024-10-12 16:21:08,288 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 465 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:08,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 70 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:21:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9068 states. [2024-10-12 16:21:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9068 to 8769. [2024-10-12 16:21:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8769 states, 8768 states have (on average 1.1388001824817517) internal successors, (9985), 8768 states have internal predecessors, (9985), 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) [2024-10-12 16:21:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8769 states to 8769 states and 9985 transitions. [2024-10-12 16:21:08,364 INFO L78 Accepts]: Start accepts. Automaton has 8769 states and 9985 transitions. Word has length 547 [2024-10-12 16:21:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:08,365 INFO L471 AbstractCegarLoop]: Abstraction has 8769 states and 9985 transitions. [2024-10-12 16:21:08,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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) [2024-10-12 16:21:08,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8769 states and 9985 transitions. [2024-10-12 16:21:08,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2024-10-12 16:21:08,369 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:08,370 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:08,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:21:08,370 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:08,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1519841790, now seen corresponding path program 1 times [2024-10-12 16:21:08,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:08,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961578944] [2024-10-12 16:21:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-12 16:21:08,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961578944] [2024-10-12 16:21:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961578944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:08,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262177660] [2024-10-12 16:21:08,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:08,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:08,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:08,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:08,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:08,555 INFO L87 Difference]: Start difference. First operand 8769 states and 9985 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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) [2024-10-12 16:21:09,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:09,425 INFO L93 Difference]: Finished difference Result 19030 states and 21652 transitions. [2024-10-12 16:21:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:09,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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 563 [2024-10-12 16:21:09,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:09,436 INFO L225 Difference]: With dead ends: 19030 [2024-10-12 16:21:09,437 INFO L226 Difference]: Without dead ends: 9963 [2024-10-12 16:21:09,445 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 [2024-10-12 16:21:09,446 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 262 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:09,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 336 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:21:09,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9963 states. [2024-10-12 16:21:09,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9963 to 6970. [2024-10-12 16:21:09,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6970 states, 6969 states have (on average 1.149662792366193) internal successors, (8012), 6969 states have internal predecessors, (8012), 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) [2024-10-12 16:21:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6970 states to 6970 states and 8012 transitions. [2024-10-12 16:21:09,519 INFO L78 Accepts]: Start accepts. Automaton has 6970 states and 8012 transitions. Word has length 563 [2024-10-12 16:21:09,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:09,520 INFO L471 AbstractCegarLoop]: Abstraction has 6970 states and 8012 transitions. [2024-10-12 16:21:09,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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) [2024-10-12 16:21:09,520 INFO L276 IsEmpty]: Start isEmpty. Operand 6970 states and 8012 transitions. [2024-10-12 16:21:09,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2024-10-12 16:21:09,524 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:09,524 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:09,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 16:21:09,525 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:09,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:09,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1526802060, now seen corresponding path program 1 times [2024-10-12 16:21:09,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:09,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742154555] [2024-10-12 16:21:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:09,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-10-12 16:21:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742154555] [2024-10-12 16:21:09,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742154555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:09,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:09,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762508445] [2024-10-12 16:21:09,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:09,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:09,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:09,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:09,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:09,944 INFO L87 Difference]: Start difference. First operand 6970 states and 8012 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2024-10-12 16:21:11,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:11,018 INFO L93 Difference]: Finished difference Result 16656 states and 19336 transitions. [2024-10-12 16:21:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:11,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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 573 [2024-10-12 16:21:11,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:11,026 INFO L225 Difference]: With dead ends: 16656 [2024-10-12 16:21:11,026 INFO L226 Difference]: Without dead ends: 9687 [2024-10-12 16:21:11,031 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 [2024-10-12 16:21:11,032 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 290 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:11,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 340 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:21:11,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9687 states. [2024-10-12 16:21:11,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9687 to 8778. [2024-10-12 16:21:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8778 states, 8777 states have (on average 1.157456989859861) internal successors, (10159), 8777 states have internal predecessors, (10159), 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) [2024-10-12 16:21:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8778 states to 8778 states and 10159 transitions. [2024-10-12 16:21:11,106 INFO L78 Accepts]: Start accepts. Automaton has 8778 states and 10159 transitions. Word has length 573 [2024-10-12 16:21:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:11,107 INFO L471 AbstractCegarLoop]: Abstraction has 8778 states and 10159 transitions. [2024-10-12 16:21:11,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2024-10-12 16:21:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 8778 states and 10159 transitions. [2024-10-12 16:21:11,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2024-10-12 16:21:11,113 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:11,114 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:11,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:21:11,115 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:11,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:11,115 INFO L85 PathProgramCache]: Analyzing trace with hash 437767339, now seen corresponding path program 1 times [2024-10-12 16:21:11,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:11,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913519011] [2024-10-12 16:21:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:11,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-10-12 16:21:11,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:11,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913519011] [2024-10-12 16:21:11,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913519011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:11,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:11,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:11,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190509127] [2024-10-12 16:21:11,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:11,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:11,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:11,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:11,433 INFO L87 Difference]: Start difference. First operand 8778 states and 10159 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2024-10-12 16:21:12,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:12,577 INFO L93 Difference]: Finished difference Result 23534 states and 27333 transitions. [2024-10-12 16:21:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:12,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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 581 [2024-10-12 16:21:12,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:12,586 INFO L225 Difference]: With dead ends: 23534 [2024-10-12 16:21:12,586 INFO L226 Difference]: Without dead ends: 10870 [2024-10-12 16:21:12,593 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 [2024-10-12 16:21:12,593 INFO L432 NwaCegarLoop]: 592 mSDtfsCounter, 273 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:12,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 629 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:21:12,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10870 states. [2024-10-12 16:21:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10870 to 8168. [2024-10-12 16:21:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8168 states, 8167 states have (on average 1.0896289947349087) internal successors, (8899), 8167 states have internal predecessors, (8899), 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) [2024-10-12 16:21:12,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8168 states to 8168 states and 8899 transitions. [2024-10-12 16:21:12,695 INFO L78 Accepts]: Start accepts. Automaton has 8168 states and 8899 transitions. Word has length 581 [2024-10-12 16:21:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:12,696 INFO L471 AbstractCegarLoop]: Abstraction has 8168 states and 8899 transitions. [2024-10-12 16:21:12,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2024-10-12 16:21:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand 8168 states and 8899 transitions. [2024-10-12 16:21:12,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2024-10-12 16:21:12,702 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:12,702 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:12,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 16:21:12,703 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:12,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1641584612, now seen corresponding path program 1 times [2024-10-12 16:21:12,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:12,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554196530] [2024-10-12 16:21:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:12,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2024-10-12 16:21:12,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:12,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554196530] [2024-10-12 16:21:12,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554196530] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:12,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:12,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:12,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35845451] [2024-10-12 16:21:12,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:12,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:12,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:12,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:12,893 INFO L87 Difference]: Start difference. First operand 8168 states and 8899 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2024-10-12 16:21:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:13,656 INFO L93 Difference]: Finished difference Result 20221 states and 22194 transitions. [2024-10-12 16:21:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:13,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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 584 [2024-10-12 16:21:13,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:13,665 INFO L225 Difference]: With dead ends: 20221 [2024-10-12 16:21:13,665 INFO L226 Difference]: Without dead ends: 10260 [2024-10-12 16:21:13,670 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 [2024-10-12 16:21:13,670 INFO L432 NwaCegarLoop]: 452 mSDtfsCounter, 299 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:13,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 478 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:21:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10260 states. [2024-10-12 16:21:13,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10260 to 10260. [2024-10-12 16:21:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10260 states, 10259 states have (on average 1.0794424407837022) internal successors, (11074), 10259 states have internal predecessors, (11074), 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) [2024-10-12 16:21:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10260 states to 10260 states and 11074 transitions. [2024-10-12 16:21:13,734 INFO L78 Accepts]: Start accepts. Automaton has 10260 states and 11074 transitions. Word has length 584 [2024-10-12 16:21:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:13,734 INFO L471 AbstractCegarLoop]: Abstraction has 10260 states and 11074 transitions. [2024-10-12 16:21:13,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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) [2024-10-12 16:21:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 10260 states and 11074 transitions. [2024-10-12 16:21:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2024-10-12 16:21:13,742 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:13,742 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:13,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:21:13,742 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:13,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash 503976424, now seen corresponding path program 1 times [2024-10-12 16:21:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:13,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173555024] [2024-10-12 16:21:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:13,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2024-10-12 16:21:14,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:14,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173555024] [2024-10-12 16:21:14,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173555024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:14,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:14,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:14,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753164269] [2024-10-12 16:21:14,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:14,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:14,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:14,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:14,079 INFO L87 Difference]: Start difference. First operand 10260 states and 11074 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2024-10-12 16:21:14,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:14,818 INFO L93 Difference]: Finished difference Result 22613 states and 24621 transitions. [2024-10-12 16:21:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:14,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 736 [2024-10-12 16:21:14,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:14,829 INFO L225 Difference]: With dead ends: 22613 [2024-10-12 16:21:14,829 INFO L226 Difference]: Without dead ends: 12354 [2024-10-12 16:21:14,833 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 [2024-10-12 16:21:14,834 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 160 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:14,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 538 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:21:14,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12354 states. [2024-10-12 16:21:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12354 to 12055. [2024-10-12 16:21:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12055 states, 12054 states have (on average 1.071511531441845) internal successors, (12916), 12054 states have internal predecessors, (12916), 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) [2024-10-12 16:21:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12055 states to 12055 states and 12916 transitions. [2024-10-12 16:21:14,949 INFO L78 Accepts]: Start accepts. Automaton has 12055 states and 12916 transitions. Word has length 736 [2024-10-12 16:21:14,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:14,950 INFO L471 AbstractCegarLoop]: Abstraction has 12055 states and 12916 transitions. [2024-10-12 16:21:14,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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) [2024-10-12 16:21:14,950 INFO L276 IsEmpty]: Start isEmpty. Operand 12055 states and 12916 transitions. [2024-10-12 16:21:14,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2024-10-12 16:21:14,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:14,967 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:21:14,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 16:21:14,967 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:14,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2139224109, now seen corresponding path program 1 times [2024-10-12 16:21:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:14,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966761920] [2024-10-12 16:21:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:14,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 872 proven. 345 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-10-12 16:21:15,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:15,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966761920] [2024-10-12 16:21:15,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966761920] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:21:15,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117167077] [2024-10-12 16:21:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:15,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:21:15,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:21:15,920 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) [2024-10-12 16:21:15,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 16:21:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:16,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:21:16,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:21:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-10-12 16:21:16,232 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:21:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117167077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:16,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:21:16,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-10-12 16:21:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411776714] [2024-10-12 16:21:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:16,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:16,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:21:16,234 INFO L87 Difference]: Start difference. First operand 12055 states and 12916 transitions. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 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) [2024-10-12 16:21:16,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:16,871 INFO L93 Difference]: Finished difference Result 23811 states and 25528 transitions. [2024-10-12 16:21:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:16,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 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 823 [2024-10-12 16:21:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:16,880 INFO L225 Difference]: With dead ends: 23811 [2024-10-12 16:21:16,880 INFO L226 Difference]: Without dead ends: 11757 [2024-10-12 16:21:16,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 16:21:16,886 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 222 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:16,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 398 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:21:16,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11757 states. [2024-10-12 16:21:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11757 to 11754. [2024-10-12 16:21:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11754 states, 11753 states have (on average 1.0646643410193142) internal successors, (12513), 11753 states have internal predecessors, (12513), 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) [2024-10-12 16:21:16,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11754 states to 11754 states and 12513 transitions. [2024-10-12 16:21:16,959 INFO L78 Accepts]: Start accepts. Automaton has 11754 states and 12513 transitions. Word has length 823 [2024-10-12 16:21:16,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:16,959 INFO L471 AbstractCegarLoop]: Abstraction has 11754 states and 12513 transitions. [2024-10-12 16:21:16,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 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) [2024-10-12 16:21:16,960 INFO L276 IsEmpty]: Start isEmpty. Operand 11754 states and 12513 transitions. [2024-10-12 16:21:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2024-10-12 16:21:16,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:16,973 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:16,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 16:21:17,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-12 16:21:17,174 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:17,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:17,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1403584013, now seen corresponding path program 1 times [2024-10-12 16:21:17,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:17,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646846269] [2024-10-12 16:21:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2024-10-12 16:21:17,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:17,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646846269] [2024-10-12 16:21:17,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646846269] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:17,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:17,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:17,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511668166] [2024-10-12 16:21:17,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:17,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:17,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:17,572 INFO L87 Difference]: Start difference. First operand 11754 states and 12513 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2024-10-12 16:21:18,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:18,289 INFO L93 Difference]: Finished difference Result 23506 states and 25024 transitions. [2024-10-12 16:21:18,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:18,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 830 [2024-10-12 16:21:18,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:18,298 INFO L225 Difference]: With dead ends: 23506 [2024-10-12 16:21:18,299 INFO L226 Difference]: Without dead ends: 11753 [2024-10-12 16:21:18,305 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 [2024-10-12 16:21:18,305 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 280 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:18,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 514 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:21:18,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11753 states. [2024-10-12 16:21:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11753 to 11453. [2024-10-12 16:21:18,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11453 states, 11452 states have (on average 1.0441844219350331) internal successors, (11958), 11452 states have internal predecessors, (11958), 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) [2024-10-12 16:21:18,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11453 states to 11453 states and 11958 transitions. [2024-10-12 16:21:18,377 INFO L78 Accepts]: Start accepts. Automaton has 11453 states and 11958 transitions. Word has length 830 [2024-10-12 16:21:18,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:18,377 INFO L471 AbstractCegarLoop]: Abstraction has 11453 states and 11958 transitions. [2024-10-12 16:21:18,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2024-10-12 16:21:18,378 INFO L276 IsEmpty]: Start isEmpty. Operand 11453 states and 11958 transitions. [2024-10-12 16:21:18,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2024-10-12 16:21:18,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:21:18,388 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:18,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 16:21:18,388 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:21:18,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:21:18,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1602617713, now seen corresponding path program 1 times [2024-10-12 16:21:18,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:21:18,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451958534] [2024-10-12 16:21:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:21:18,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:21:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:21:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1434 backedges. 756 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2024-10-12 16:21:18,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:21:18,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451958534] [2024-10-12 16:21:18,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451958534] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:21:18,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:21:18,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:21:18,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230540645] [2024-10-12 16:21:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:21:18,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:21:18,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:21:18,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:21:18,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:21:18,982 INFO L87 Difference]: Start difference. First operand 11453 states and 11958 transitions. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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) [2024-10-12 16:21:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:21:19,616 INFO L93 Difference]: Finished difference Result 23756 states and 24642 transitions. [2024-10-12 16:21:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:21:19,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 925 [2024-10-12 16:21:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:21:19,617 INFO L225 Difference]: With dead ends: 23756 [2024-10-12 16:21:19,617 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 16:21:19,625 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 [2024-10-12 16:21:19,625 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 248 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:21:19,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 78 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 16:21:19,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 16:21:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 16:21:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:21:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 16:21:19,626 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 925 [2024-10-12 16:21:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:21:19,626 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 16:21:19,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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) [2024-10-12 16:21:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 16:21:19,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 16:21:19,629 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 16:21:19,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 16:21:19,631 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:21:19,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 16:21:20,582 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 16:21:20,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:21:20 BoogieIcfgContainer [2024-10-12 16:21:20,600 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 16:21:20,601 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 16:21:20,601 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 16:21:20,601 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 16:21:20,601 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:20:48" (3/4) ... [2024-10-12 16:21:20,603 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 16:21:20,623 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-12 16:21:20,625 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-12 16:21:20,626 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 16:21:20,627 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 16:21:20,778 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 16:21:20,779 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 16:21:20,779 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 16:21:20,779 INFO L158 Benchmark]: Toolchain (without parser) took 34993.13ms. Allocated memory was 153.1MB in the beginning and 1.2GB in the end (delta: 998.2MB). Free memory was 81.4MB in the beginning and 451.9MB in the end (delta: -370.5MB). Peak memory consumption was 630.8MB. Max. memory is 16.1GB. [2024-10-12 16:21:20,780 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 153.1MB. Free memory was 119.3MB in the beginning and 119.1MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 16:21:20,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 747.72ms. Allocated memory is still 153.1MB. Free memory was 81.2MB in the beginning and 102.9MB in the end (delta: -21.7MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2024-10-12 16:21:20,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 138.25ms. Allocated memory is still 153.1MB. Free memory was 102.9MB in the beginning and 64.3MB in the end (delta: 38.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-10-12 16:21:20,780 INFO L158 Benchmark]: Boogie Preprocessor took 230.52ms. Allocated memory was 153.1MB in the beginning and 190.8MB in the end (delta: 37.7MB). Free memory was 64.3MB in the beginning and 92.1MB in the end (delta: -27.8MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2024-10-12 16:21:20,781 INFO L158 Benchmark]: RCFGBuilder took 1915.89ms. Allocated memory was 190.8MB in the beginning and 297.8MB in the end (delta: 107.0MB). Free memory was 92.1MB in the beginning and 183.5MB in the end (delta: -91.4MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. [2024-10-12 16:21:20,781 INFO L158 Benchmark]: TraceAbstraction took 31777.31ms. Allocated memory was 297.8MB in the beginning and 1.2GB in the end (delta: 853.5MB). Free memory was 182.5MB in the beginning and 479.2MB in the end (delta: -296.7MB). Peak memory consumption was 647.0MB. Max. memory is 16.1GB. [2024-10-12 16:21:20,781 INFO L158 Benchmark]: Witness Printer took 178.09ms. Allocated memory is still 1.2GB. Free memory was 479.2MB in the beginning and 451.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-10-12 16:21:20,782 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 153.1MB. Free memory was 119.3MB in the beginning and 119.1MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 747.72ms. Allocated memory is still 153.1MB. Free memory was 81.2MB in the beginning and 102.9MB in the end (delta: -21.7MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 138.25ms. Allocated memory is still 153.1MB. Free memory was 102.9MB in the beginning and 64.3MB in the end (delta: 38.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 230.52ms. Allocated memory was 153.1MB in the beginning and 190.8MB in the end (delta: 37.7MB). Free memory was 64.3MB in the beginning and 92.1MB in the end (delta: -27.8MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * RCFGBuilder took 1915.89ms. Allocated memory was 190.8MB in the beginning and 297.8MB in the end (delta: 107.0MB). Free memory was 92.1MB in the beginning and 183.5MB in the end (delta: -91.4MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. * TraceAbstraction took 31777.31ms. Allocated memory was 297.8MB in the beginning and 1.2GB in the end (delta: 853.5MB). Free memory was 182.5MB in the beginning and 479.2MB in the end (delta: -296.7MB). Peak memory consumption was 647.0MB. Max. memory is 16.1GB. * Witness Printer took 178.09ms. Allocated memory is still 1.2GB. Free memory was 479.2MB in the beginning and 451.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 158]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 362 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.8s, OverallIterations: 20, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5221 SdHoareTripleChecker+Valid, 19.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5221 mSDsluCounter, 7677 SdHoareTripleChecker+Invalid, 16.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 719 mSDsCounter, 3535 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18027 IncrementalHoareTripleChecker+Invalid, 21562 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3535 mSolverCounterUnsat, 6958 mSDtfsCounter, 18027 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1679 GetRequests, 1650 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12055occurred in iteration=17, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 11137 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 10408 NumberOfCodeBlocks, 10408 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 10385 ConstructedInterpolants, 0 QuantifiedInterpolants, 29576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1988 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 23 InterpolantComputations, 20 PerfectInterpolantSequences, 10214/10673 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1776]: Loop Invariant Derived loop invariant: ((((((((((((((((((((long long) 42 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (3 == a2)) || (((((long long) 42 + a4) <= 0) && (0 <= ((long long) a0 + 60))) && (3 == a2))) || ((2 == a2) && (((long long) 98 + a0) <= 0))) || ((2 == a2) && (((long long) 89 + a4) <= 0))) || (((((long long) 42 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (a2 == 1))) || (((((long long) 89 + a4) <= 0) && (((long long) a29 + 18) <= 0)) && (a2 == 4))) || (((5 == a2) && (0 <= ((long long) a0 + 60))) && (((long long) a4 + 86) <= 0))) || (((a29 <= 41) && (((long long) 42 + a4) <= 0)) && (a2 == 1))) || (((((long long) 42 + a4) <= 0) && (((long long) 98 + a0) <= 0)) && (a2 == 4))) || ((((long long) a4 + 86) <= 0) && (3 == a2))) || ((5 == a2) && (((long long) 89 + a4) <= 0))) || (((5 == a2) && (((long long) 42 + a4) <= 0)) && (((long long) 98 + a0) <= 0))) || (((2 == a2) && (0 <= ((long long) a0 + 60))) && (((long long) a4 + 86) <= 0))) || (((0 <= ((long long) a0 + 60)) && (((long long) a4 + 86) <= 0)) && (a2 == 4))) || ((a2 == 1) && (((long long) a4 + 86) <= 0))) || ((((long long) 89 + a4) <= 0) && (((long long) 98 + a0) <= 0))) RESULT: Ultimate proved your program to be correct! [2024-10-12 16:21:20,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE