./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-13.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-13.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da8d6803321973ca630199b6637b3c7e1909a2521698c73f2599b09c55d0dc3c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:40:01,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:40:01,559 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:40:01,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:40:01,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:40:01,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:40:01,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:40:01,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:40:01,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:40:01,594 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:40:01,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:40:01,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:40:01,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:40:01,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:40:01,596 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:40:01,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:40:01,597 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:40:01,597 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:40:01,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:40:01,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:40:01,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:40:01,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:40:01,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:40:01,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:40:01,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:40:01,602 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:40:01,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:40:01,602 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:40:01,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:40:01,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:40:01,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:40:01,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:40:01,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:40:01,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:40:01,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:40:01,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:40:01,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:40:01,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:40:01,604 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:40:01,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:40:01,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:40:01,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:40:01,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da8d6803321973ca630199b6637b3c7e1909a2521698c73f2599b09c55d0dc3c [2024-11-18 23:40:01,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:40:01,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:40:01,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:40:01,876 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:40:01,877 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:40:01,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-13.i [2024-11-18 23:40:03,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:40:03,491 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:40:03,491 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-13.i [2024-11-18 23:40:03,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba1fc9b69/becdfcc45987473ca9cd5c98f5deac84/FLAGd895b938a [2024-11-18 23:40:03,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba1fc9b69/becdfcc45987473ca9cd5c98f5deac84 [2024-11-18 23:40:03,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:40:03,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:40:03,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:40:03,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:40:03,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:40:03,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:40:03" (1/1) ... [2024-11-18 23:40:03,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e14a547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:03, skipping insertion in model container [2024-11-18 23:40:03,524 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:40:03" (1/1) ... [2024-11-18 23:40:03,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:40:03,785 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-13.i[916,929] [2024-11-18 23:40:04,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:40:04,025 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:40:04,034 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-13.i[916,929] [2024-11-18 23:40:04,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:40:04,162 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:40:04,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04 WrapperNode [2024-11-18 23:40:04,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:40:04,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:40:04,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:40:04,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:40:04,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,275 INFO L138 Inliner]: procedures = 26, calls = 65, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 410 [2024-11-18 23:40:04,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:40:04,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:40:04,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:40:04,276 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:40:04,296 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,382 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:40:04,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:40:04,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:40:04,485 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:40:04,485 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:40:04,486 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (1/1) ... [2024-11-18 23:40:04,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:40:04,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:04,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:40:04,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:40:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:40:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:40:04,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:40:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:40:04,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:40:04,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:40:04,654 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:40:04,656 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:40:05,075 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-11-18 23:40:05,076 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:40:05,092 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:40:05,093 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:40:05,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:40:05 BoogieIcfgContainer [2024-11-18 23:40:05,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:40:05,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:40:05,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:40:05,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:40:05,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:40:03" (1/3) ... [2024-11-18 23:40:05,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60221848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:40:05, skipping insertion in model container [2024-11-18 23:40:05,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:40:04" (2/3) ... [2024-11-18 23:40:05,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60221848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:40:05, skipping insertion in model container [2024-11-18 23:40:05,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:40:05" (3/3) ... [2024-11-18 23:40:05,100 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-13.i [2024-11-18 23:40:05,112 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:40:05,112 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:40:05,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:40:05,178 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;@4e2202e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:40:05,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:40:05,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 119 states have internal predecessors, (174), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 23:40:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 23:40:05,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:05,199 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:05,200 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:05,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:05,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1728996978, now seen corresponding path program 1 times [2024-11-18 23:40:05,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:05,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122080744] [2024-11-18 23:40:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:05,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2024-11-18 23:40:05,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:05,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122080744] [2024-11-18 23:40:05,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122080744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:40:05,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984911509] [2024-11-18 23:40:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:05,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:05,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:05,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:40:05,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:40:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:05,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:40:05,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:40:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2024-11-18 23:40:06,002 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:40:06,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984911509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:06,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:40:06,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:40:06,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497579133] [2024-11-18 23:40:06,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:06,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:40:06,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:06,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:40:06,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:40:06,033 INFO L87 Difference]: Start difference. First operand has 173 states, 118 states have (on average 1.4745762711864407) internal successors, (174), 119 states have internal predecessors, (174), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-18 23:40:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:06,079 INFO L93 Difference]: Finished difference Result 339 states and 602 transitions. [2024-11-18 23:40:06,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:40:06,081 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 2 states have call successors, (52) Word has length 342 [2024-11-18 23:40:06,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:06,087 INFO L225 Difference]: With dead ends: 339 [2024-11-18 23:40:06,088 INFO L226 Difference]: Without dead ends: 169 [2024-11-18 23:40:06,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:40:06,097 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:06,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:40:06,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-18 23:40:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-18 23:40:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 115 states have (on average 1.4434782608695653) internal successors, (166), 115 states have internal predecessors, (166), 52 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 23:40:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 270 transitions. [2024-11-18 23:40:06,157 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 270 transitions. Word has length 342 [2024-11-18 23:40:06,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:06,158 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 270 transitions. [2024-11-18 23:40:06,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-18 23:40:06,158 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 270 transitions. [2024-11-18 23:40:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 23:40:06,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:06,166 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:06,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 23:40:06,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:40:06,368 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:06,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1842075286, now seen corresponding path program 1 times [2024-11-18 23:40:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:06,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890623234] [2024-11-18 23:40:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:06,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:40:06,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:06,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890623234] [2024-11-18 23:40:06,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890623234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:06,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:06,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:40:06,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874139843] [2024-11-18 23:40:06,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:06,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:40:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:06,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:40:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:40:06,906 INFO L87 Difference]: Start difference. First operand 169 states and 270 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:40:07,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:07,182 INFO L93 Difference]: Finished difference Result 502 states and 805 transitions. [2024-11-18 23:40:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:40:07,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 342 [2024-11-18 23:40:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:07,188 INFO L225 Difference]: With dead ends: 502 [2024-11-18 23:40:07,188 INFO L226 Difference]: Without dead ends: 336 [2024-11-18 23:40:07,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:40:07,190 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 191 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:07,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 792 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:40:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-18 23:40:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 264. [2024-11-18 23:40:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 157 states have (on average 1.3503184713375795) internal successors, (212), 157 states have internal predecessors, (212), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-18 23:40:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 420 transitions. [2024-11-18 23:40:07,246 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 420 transitions. Word has length 342 [2024-11-18 23:40:07,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:07,248 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 420 transitions. [2024-11-18 23:40:07,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:40:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 420 transitions. [2024-11-18 23:40:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 23:40:07,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:07,252 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:07,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:40:07,252 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:07,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:07,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1559405672, now seen corresponding path program 1 times [2024-11-18 23:40:07,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:07,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008186495] [2024-11-18 23:40:07,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:07,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:40:07,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:07,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008186495] [2024-11-18 23:40:07,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008186495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:07,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:07,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:40:07,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695309150] [2024-11-18 23:40:07,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:07,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:40:07,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:07,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:40:07,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:07,794 INFO L87 Difference]: Start difference. First operand 264 states and 420 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:40:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:07,822 INFO L93 Difference]: Finished difference Result 430 states and 687 transitions. [2024-11-18 23:40:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:40:07,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 342 [2024-11-18 23:40:07,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:07,826 INFO L225 Difference]: With dead ends: 430 [2024-11-18 23:40:07,826 INFO L226 Difference]: Without dead ends: 264 [2024-11-18 23:40:07,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:40:07,831 INFO L432 NwaCegarLoop]: 413 mSDtfsCounter, 258 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:07,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 564 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:40:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-18 23:40:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-11-18 23:40:07,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 157 states have (on average 1.3375796178343948) internal successors, (210), 157 states have internal predecessors, (210), 104 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-18 23:40:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 418 transitions. [2024-11-18 23:40:07,851 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 418 transitions. Word has length 342 [2024-11-18 23:40:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:07,852 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 418 transitions. [2024-11-18 23:40:07,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:40:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 418 transitions. [2024-11-18 23:40:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 23:40:07,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:07,854 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:07,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:40:07,855 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:07,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:07,855 INFO L85 PathProgramCache]: Analyzing trace with hash 530046374, now seen corresponding path program 1 times [2024-11-18 23:40:07,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:07,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779720280] [2024-11-18 23:40:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:07,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:40:08,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:08,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779720280] [2024-11-18 23:40:08,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779720280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:08,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:08,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 23:40:08,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36381782] [2024-11-18 23:40:08,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:08,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 23:40:08,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:08,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 23:40:08,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:40:08,966 INFO L87 Difference]: Start difference. First operand 264 states and 418 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-18 23:40:09,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:09,854 INFO L93 Difference]: Finished difference Result 876 states and 1374 transitions. [2024-11-18 23:40:09,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 23:40:09,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 342 [2024-11-18 23:40:09,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:09,859 INFO L225 Difference]: With dead ends: 876 [2024-11-18 23:40:09,859 INFO L226 Difference]: Without dead ends: 710 [2024-11-18 23:40:09,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:40:09,861 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 819 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:09,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1777 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:40:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-18 23:40:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 626. [2024-11-18 23:40:09,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 456 states have (on average 1.4780701754385965) internal successors, (674), 458 states have internal predecessors, (674), 164 states have call successors, (164), 5 states have call predecessors, (164), 5 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-18 23:40:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1002 transitions. [2024-11-18 23:40:09,914 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1002 transitions. Word has length 342 [2024-11-18 23:40:09,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:09,915 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 1002 transitions. [2024-11-18 23:40:09,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2024-11-18 23:40:09,915 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1002 transitions. [2024-11-18 23:40:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 23:40:09,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:09,917 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:09,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:40:09,918 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:09,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:09,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1210104744, now seen corresponding path program 1 times [2024-11-18 23:40:09,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:09,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906769313] [2024-11-18 23:40:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:09,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:40:10,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:10,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906769313] [2024-11-18 23:40:10,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906769313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:10,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:10,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:40:10,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054374978] [2024-11-18 23:40:10,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:10,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:40:10,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:10,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:40:10,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:40:10,860 INFO L87 Difference]: Start difference. First operand 626 states and 1002 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:40:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:11,186 INFO L93 Difference]: Finished difference Result 1924 states and 3078 transitions. [2024-11-18 23:40:11,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:40:11,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 342 [2024-11-18 23:40:11,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:11,194 INFO L225 Difference]: With dead ends: 1924 [2024-11-18 23:40:11,194 INFO L226 Difference]: Without dead ends: 1402 [2024-11-18 23:40:11,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:40:11,196 INFO L432 NwaCegarLoop]: 525 mSDtfsCounter, 738 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:11,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 929 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:40:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2024-11-18 23:40:11,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1094. [2024-11-18 23:40:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 868 states have (on average 1.521889400921659) internal successors, (1321), 874 states have internal predecessors, (1321), 216 states have call successors, (216), 9 states have call predecessors, (216), 9 states have return successors, (216), 210 states have call predecessors, (216), 216 states have call successors, (216) [2024-11-18 23:40:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1753 transitions. [2024-11-18 23:40:11,253 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1753 transitions. Word has length 342 [2024-11-18 23:40:11,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:11,254 INFO L471 AbstractCegarLoop]: Abstraction has 1094 states and 1753 transitions. [2024-11-18 23:40:11,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:40:11,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1753 transitions. [2024-11-18 23:40:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 23:40:11,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:11,256 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:11,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:40:11,257 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:11,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:11,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1713055254, now seen corresponding path program 1 times [2024-11-18 23:40:11,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:11,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816931502] [2024-11-18 23:40:11,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:11,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:12,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-11-18 23:40:12,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:12,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816931502] [2024-11-18 23:40:12,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816931502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:40:12,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:40:12,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 23:40:12,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455473908] [2024-11-18 23:40:12,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:40:12,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:40:12,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:12,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:40:12,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:40:12,021 INFO L87 Difference]: Start difference. First operand 1094 states and 1753 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:40:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:12,728 INFO L93 Difference]: Finished difference Result 3866 states and 6114 transitions. [2024-11-18 23:40:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 23:40:12,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) Word has length 342 [2024-11-18 23:40:12,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:12,738 INFO L225 Difference]: With dead ends: 3866 [2024-11-18 23:40:12,739 INFO L226 Difference]: Without dead ends: 2876 [2024-11-18 23:40:12,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:40:12,741 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 926 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:12,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 865 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:40:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2024-11-18 23:40:12,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2086. [2024-11-18 23:40:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 1739 states have (on average 1.5434157561817137) internal successors, (2684), 1753 states have internal predecessors, (2684), 328 states have call successors, (328), 18 states have call predecessors, (328), 18 states have return successors, (328), 314 states have call predecessors, (328), 328 states have call successors, (328) [2024-11-18 23:40:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 3340 transitions. [2024-11-18 23:40:12,857 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 3340 transitions. Word has length 342 [2024-11-18 23:40:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:12,858 INFO L471 AbstractCegarLoop]: Abstraction has 2086 states and 3340 transitions. [2024-11-18 23:40:12,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 1 states have call predecessors, (52), 1 states have call successors, (52) [2024-11-18 23:40:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 3340 transitions. [2024-11-18 23:40:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-18 23:40:12,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:12,862 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:12,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:40:12,863 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:12,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:12,864 INFO L85 PathProgramCache]: Analyzing trace with hash 66623133, now seen corresponding path program 1 times [2024-11-18 23:40:12,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:12,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875415016] [2024-11-18 23:40:12,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:12,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 57 proven. 96 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-18 23:40:13,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:13,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875415016] [2024-11-18 23:40:13,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875415016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:40:13,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497981536] [2024-11-18 23:40:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:13,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:13,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:13,557 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:40:13,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 23:40:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:13,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 23:40:13,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:40:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1513 proven. 24 refuted. 0 times theorem prover too weak. 3767 trivial. 0 not checked. [2024-11-18 23:40:14,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:40:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 129 proven. 24 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-18 23:40:14,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497981536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:40:14,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:40:14,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 15 [2024-11-18 23:40:14,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170457405] [2024-11-18 23:40:14,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:40:14,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 23:40:14,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 23:40:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:40:14,638 INFO L87 Difference]: Start difference. First operand 2086 states and 3340 transitions. Second operand has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 15 states have internal predecessors, (200), 6 states have call successors, (156), 3 states have call predecessors, (156), 6 states have return successors, (156), 6 states have call predecessors, (156), 6 states have call successors, (156) [2024-11-18 23:40:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:15,235 INFO L93 Difference]: Finished difference Result 4146 states and 6583 transitions. [2024-11-18 23:40:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 23:40:15,236 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 15 states have internal predecessors, (200), 6 states have call successors, (156), 3 states have call predecessors, (156), 6 states have return successors, (156), 6 states have call predecessors, (156), 6 states have call successors, (156) Word has length 342 [2024-11-18 23:40:15,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:15,245 INFO L225 Difference]: With dead ends: 4146 [2024-11-18 23:40:15,245 INFO L226 Difference]: Without dead ends: 2172 [2024-11-18 23:40:15,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2024-11-18 23:40:15,249 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 275 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:15,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 797 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 23:40:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2024-11-18 23:40:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 2134. [2024-11-18 23:40:15,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 1775 states have (on average 1.512112676056338) internal successors, (2684), 1789 states have internal predecessors, (2684), 328 states have call successors, (328), 30 states have call predecessors, (328), 30 states have return successors, (328), 314 states have call predecessors, (328), 328 states have call successors, (328) [2024-11-18 23:40:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 3340 transitions. [2024-11-18 23:40:15,405 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 3340 transitions. Word has length 342 [2024-11-18 23:40:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:15,405 INFO L471 AbstractCegarLoop]: Abstraction has 2134 states and 3340 transitions. [2024-11-18 23:40:15,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 15 states have internal predecessors, (200), 6 states have call successors, (156), 3 states have call predecessors, (156), 6 states have return successors, (156), 6 states have call predecessors, (156), 6 states have call successors, (156) [2024-11-18 23:40:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 3340 transitions. [2024-11-18 23:40:15,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-18 23:40:15,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:15,409 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:15,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 23:40:15,609 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,SelfDestructingSolverStorable6 [2024-11-18 23:40:15,610 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:15,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:15,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1661774309, now seen corresponding path program 1 times [2024-11-18 23:40:15,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:15,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862708875] [2024-11-18 23:40:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:15,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 30 proven. 123 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-18 23:40:16,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:16,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862708875] [2024-11-18 23:40:16,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862708875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:40:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776630978] [2024-11-18 23:40:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:16,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:16,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:16,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:40:16,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 23:40:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:16,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:40:16,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:40:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1711 proven. 123 refuted. 0 times theorem prover too weak. 3470 trivial. 0 not checked. [2024-11-18 23:40:16,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:40:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 30 proven. 123 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-18 23:40:16,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776630978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:40:16,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:40:16,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2024-11-18 23:40:16,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645472227] [2024-11-18 23:40:16,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:40:16,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:40:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:16,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:40:16,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:40:16,994 INFO L87 Difference]: Start difference. First operand 2134 states and 3340 transitions. Second operand has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 5 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 5 states have call predecessors, (146), 5 states have call successors, (146) [2024-11-18 23:40:17,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:17,781 INFO L93 Difference]: Finished difference Result 5768 states and 9034 transitions. [2024-11-18 23:40:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 23:40:17,782 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 5 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 5 states have call predecessors, (146), 5 states have call successors, (146) Word has length 343 [2024-11-18 23:40:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:17,794 INFO L225 Difference]: With dead ends: 5768 [2024-11-18 23:40:17,794 INFO L226 Difference]: Without dead ends: 3754 [2024-11-18 23:40:17,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 685 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2024-11-18 23:40:17,798 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 877 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:17,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 723 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 23:40:17,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2024-11-18 23:40:17,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3694. [2024-11-18 23:40:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 3197 states have (on average 1.5039099155458242) internal successors, (4808), 3227 states have internal predecessors, (4808), 440 states have call successors, (440), 56 states have call predecessors, (440), 56 states have return successors, (440), 410 states have call predecessors, (440), 440 states have call successors, (440) [2024-11-18 23:40:17,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 5688 transitions. [2024-11-18 23:40:17,972 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 5688 transitions. Word has length 343 [2024-11-18 23:40:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:17,973 INFO L471 AbstractCegarLoop]: Abstraction has 3694 states and 5688 transitions. [2024-11-18 23:40:17,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.75) internal successors, (237), 12 states have internal predecessors, (237), 5 states have call successors, (145), 2 states have call predecessors, (145), 4 states have return successors, (146), 5 states have call predecessors, (146), 5 states have call successors, (146) [2024-11-18 23:40:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 5688 transitions. [2024-11-18 23:40:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-11-18 23:40:17,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:17,979 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:17,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 23:40:18,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:18,181 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:18,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:18,181 INFO L85 PathProgramCache]: Analyzing trace with hash 113233053, now seen corresponding path program 1 times [2024-11-18 23:40:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:18,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073443296] [2024-11-18 23:40:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:18,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 30 proven. 123 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-18 23:40:18,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:18,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073443296] [2024-11-18 23:40:18,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073443296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:40:18,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105015586] [2024-11-18 23:40:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:18,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:18,792 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:40:18,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 23:40:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:18,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 23:40:18,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:40:19,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1711 proven. 123 refuted. 0 times theorem prover too weak. 3470 trivial. 0 not checked. [2024-11-18 23:40:19,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:40:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 30 proven. 123 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2024-11-18 23:40:19,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105015586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:40:19,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:40:19,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-11-18 23:40:19,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308996618] [2024-11-18 23:40:19,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:40:19,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:40:19,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:40:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:40:19,478 INFO L87 Difference]: Start difference. First operand 3694 states and 5688 transitions. Second operand has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 4 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 4 states have call predecessors, (135), 4 states have call successors, (135) [2024-11-18 23:40:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:19,981 INFO L93 Difference]: Finished difference Result 5571 states and 8590 transitions. [2024-11-18 23:40:19,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:40:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 4 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 4 states have call predecessors, (135), 4 states have call successors, (135) Word has length 343 [2024-11-18 23:40:19,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:19,996 INFO L225 Difference]: With dead ends: 5571 [2024-11-18 23:40:19,996 INFO L226 Difference]: Without dead ends: 3732 [2024-11-18 23:40:20,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:40:20,002 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 229 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:20,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 886 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:40:20,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2024-11-18 23:40:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3694. [2024-11-18 23:40:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3694 states, 3197 states have (on average 1.4926493587738505) internal successors, (4772), 3227 states have internal predecessors, (4772), 440 states have call successors, (440), 56 states have call predecessors, (440), 56 states have return successors, (440), 410 states have call predecessors, (440), 440 states have call successors, (440) [2024-11-18 23:40:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3694 states to 3694 states and 5652 transitions. [2024-11-18 23:40:20,173 INFO L78 Accepts]: Start accepts. Automaton has 3694 states and 5652 transitions. Word has length 343 [2024-11-18 23:40:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:20,173 INFO L471 AbstractCegarLoop]: Abstraction has 3694 states and 5652 transitions. [2024-11-18 23:40:20,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.083333333333334) internal successors, (181), 12 states have internal predecessors, (181), 4 states have call successors, (134), 2 states have call predecessors, (134), 4 states have return successors, (135), 4 states have call predecessors, (135), 4 states have call successors, (135) [2024-11-18 23:40:20,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3694 states and 5652 transitions. [2024-11-18 23:40:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-18 23:40:20,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:20,178 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:20,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 23:40:20,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:20,379 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:20,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1304140050, now seen corresponding path program 1 times [2024-11-18 23:40:20,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:20,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804174570] [2024-11-18 23:40:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:20,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 687 proven. 18 refuted. 0 times theorem prover too weak. 4599 trivial. 0 not checked. [2024-11-18 23:40:23,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:40:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804174570] [2024-11-18 23:40:23,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804174570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:40:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372895651] [2024-11-18 23:40:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:23,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:23,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:23,626 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:40:23,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 23:40:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:23,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-18 23:40:23,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:40:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 1323 proven. 105 refuted. 0 times theorem prover too weak. 3876 trivial. 0 not checked. [2024-11-18 23:40:25,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:40:25,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372895651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:40:25,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 23:40:25,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 39 [2024-11-18 23:40:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487621406] [2024-11-18 23:40:25,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 23:40:25,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-18 23:40:25,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:40:25,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-18 23:40:25,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1786, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 23:40:25,888 INFO L87 Difference]: Start difference. First operand 3694 states and 5652 transitions. Second operand has 39 states, 37 states have (on average 4.162162162162162) internal successors, (154), 34 states have internal predecessors, (154), 12 states have call successors, (104), 8 states have call predecessors, (104), 10 states have return successors, (104), 12 states have call predecessors, (104), 12 states have call successors, (104) [2024-11-18 23:40:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:40:28,209 INFO L93 Difference]: Finished difference Result 5850 states and 8851 transitions. [2024-11-18 23:40:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 23:40:28,210 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 4.162162162162162) internal successors, (154), 34 states have internal predecessors, (154), 12 states have call successors, (104), 8 states have call predecessors, (104), 10 states have return successors, (104), 12 states have call predecessors, (104), 12 states have call successors, (104) Word has length 344 [2024-11-18 23:40:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:40:28,220 INFO L225 Difference]: With dead ends: 5850 [2024-11-18 23:40:28,220 INFO L226 Difference]: Without dead ends: 2284 [2024-11-18 23:40:28,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=809, Invalid=3747, Unknown=0, NotChecked=0, Total=4556 [2024-11-18 23:40:28,228 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 454 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-18 23:40:28,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1245 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-18 23:40:28,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2024-11-18 23:40:28,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2246. [2024-11-18 23:40:28,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2246 states, 1859 states have (on average 1.436256051640667) internal successors, (2670), 1873 states have internal predecessors, (2670), 328 states have call successors, (328), 58 states have call predecessors, (328), 58 states have return successors, (328), 314 states have call predecessors, (328), 328 states have call successors, (328) [2024-11-18 23:40:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2246 states to 2246 states and 3326 transitions. [2024-11-18 23:40:28,369 INFO L78 Accepts]: Start accepts. Automaton has 2246 states and 3326 transitions. Word has length 344 [2024-11-18 23:40:28,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:40:28,369 INFO L471 AbstractCegarLoop]: Abstraction has 2246 states and 3326 transitions. [2024-11-18 23:40:28,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 4.162162162162162) internal successors, (154), 34 states have internal predecessors, (154), 12 states have call successors, (104), 8 states have call predecessors, (104), 10 states have return successors, (104), 12 states have call predecessors, (104), 12 states have call successors, (104) [2024-11-18 23:40:28,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2246 states and 3326 transitions. [2024-11-18 23:40:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-18 23:40:28,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:40:28,373 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:40:28,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 23:40:28,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 23:40:28,574 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:40:28,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:40:28,575 INFO L85 PathProgramCache]: Analyzing trace with hash 909773264, now seen corresponding path program 1 times [2024-11-18 23:40:28,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:40:28,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260115978] [2024-11-18 23:40:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:28,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:40:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 23:40:28,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899416124] [2024-11-18 23:40:28,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:40:28,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:40:28,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:40:28,877 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:40:28,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 23:40:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:40:29,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-18 23:40:29,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:40:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 3151 proven. 168 refuted. 0 times theorem prover too weak. 1985 trivial. 0 not checked. [2024-11-18 23:40:51,342 INFO L311 TraceCheckSpWp]: Computing backward predicates...