./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-83.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-83.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 e31a340a728b4b13c53c35406dccb6504a466f013456cf371c6079f0f2b7f2d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 12:05:29,652 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 12:05:29,721 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 12:05:29,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 12:05:29,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 12:05:29,757 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 12:05:29,758 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 12:05:29,758 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 12:05:29,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 12:05:29,759 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 12:05:29,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 12:05:29,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 12:05:29,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 12:05:29,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 12:05:29,763 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 12:05:29,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 12:05:29,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 12:05:29,764 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 12:05:29,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 12:05:29,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 12:05:29,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 12:05:29,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 12:05:29,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 12:05:29,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 12:05:29,769 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 12:05:29,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 12:05:29,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 12:05:29,770 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 12:05:29,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 12:05:29,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 12:05:29,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 12:05:29,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 12:05:29,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:05:29,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 12:05:29,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 12:05:29,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 12:05:29,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 12:05:29,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 12:05:29,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 12:05:29,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 12:05:29,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 12:05:29,775 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 12:05:29,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e31a340a728b4b13c53c35406dccb6504a466f013456cf371c6079f0f2b7f2d6 [2024-11-22 12:05:30,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 12:05:30,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 12:05:30,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 12:05:30,114 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 12:05:30,115 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 12:05:30,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-83.i [2024-11-22 12:05:31,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 12:05:31,868 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 12:05:31,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-83.i [2024-11-22 12:05:31,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53d026890/2fa8920b9be94b348892abefb0fb15eb/FLAG5dd6a2fa2 [2024-11-22 12:05:32,093 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53d026890/2fa8920b9be94b348892abefb0fb15eb [2024-11-22 12:05:32,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 12:05:32,097 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 12:05:32,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 12:05:32,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 12:05:32,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 12:05:32,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:32,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c861358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32, skipping insertion in model container [2024-11-22 12:05:32,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:32,157 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 12:05:32,360 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_amount500_file-83.i[916,929] [2024-11-22 12:05:32,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:05:32,676 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 12:05:32,688 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_amount500_file-83.i[916,929] [2024-11-22 12:05:32,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 12:05:32,858 INFO L204 MainTranslator]: Completed translation [2024-11-22 12:05:32,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32 WrapperNode [2024-11-22 12:05:32,859 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 12:05:32,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 12:05:32,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 12:05:32,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 12:05:32,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:32,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,028 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 702 [2024-11-22 12:05:33,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 12:05:33,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 12:05:33,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 12:05:33,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 12:05:33,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,070 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,205 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]. [2024-11-22 12:05:33,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,243 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,253 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 12:05:33,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 12:05:33,339 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 12:05:33,339 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 12:05:33,340 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (1/1) ... [2024-11-22 12:05:33,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 12:05:33,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:05:33,371 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) [2024-11-22 12:05:33,374 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 [2024-11-22 12:05:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 12:05:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 12:05:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 12:05:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 12:05:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 12:05:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 12:05:33,544 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 12:05:33,551 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 12:05:34,786 INFO L? ?]: Removed 59 outVars from TransFormulas that were not future-live. [2024-11-22 12:05:34,787 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 12:05:34,804 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 12:05:34,805 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 12:05:34,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:05:34 BoogieIcfgContainer [2024-11-22 12:05:34,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 12:05:34,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 12:05:34,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 12:05:34,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 12:05:34,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:05:32" (1/3) ... [2024-11-22 12:05:34,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a51e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:05:34, skipping insertion in model container [2024-11-22 12:05:34,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:05:32" (2/3) ... [2024-11-22 12:05:34,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a51e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:05:34, skipping insertion in model container [2024-11-22 12:05:34,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:05:34" (3/3) ... [2024-11-22 12:05:34,815 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-83.i [2024-11-22 12:05:34,832 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 12:05:34,832 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 12:05:34,921 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 12:05:34,927 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;@143229ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 12:05:34,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 12:05:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 268 states, 205 states have (on average 1.5658536585365854) internal successors, (321), 206 states have internal predecessors, (321), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 12:05:34,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-22 12:05:34,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:34,958 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:34,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:34,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash -356447216, now seen corresponding path program 1 times [2024-11-22 12:05:34,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:34,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522431362] [2024-11-22 12:05:34,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2024-11-22 12:05:35,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:35,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522431362] [2024-11-22 12:05:35,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522431362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:05:35,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742373884] [2024-11-22 12:05:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:35,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:05:35,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:05:35,700 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) [2024-11-22 12:05:35,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 12:05:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:36,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 12:05:36,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:05:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2024-11-22 12:05:36,163 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 12:05:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742373884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:36,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 12:05:36,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 12:05:36,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723381610] [2024-11-22 12:05:36,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:36,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 12:05:36,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:36,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 12:05:36,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:05:36,201 INFO L87 Difference]: Start difference. First operand has 268 states, 205 states have (on average 1.5658536585365854) internal successors, (321), 206 states have internal predecessors, (321), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-22 12:05:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:36,266 INFO L93 Difference]: Finished difference Result 529 states and 936 transitions. [2024-11-22 12:05:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 12:05:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) Word has length 412 [2024-11-22 12:05:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:36,280 INFO L225 Difference]: With dead ends: 529 [2024-11-22 12:05:36,280 INFO L226 Difference]: Without dead ends: 264 [2024-11-22 12:05:36,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 12:05:36,288 INFO L432 NwaCegarLoop]: 431 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, 431 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 [2024-11-22 12:05:36,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:05:36,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-22 12:05:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-11-22 12:05:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 202 states have (on average 1.5396039603960396) internal successors, (311), 202 states have internal predecessors, (311), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 12:05:36,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 431 transitions. [2024-11-22 12:05:36,362 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 431 transitions. Word has length 412 [2024-11-22 12:05:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:36,363 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 431 transitions. [2024-11-22 12:05:36,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-22 12:05:36,364 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 431 transitions. [2024-11-22 12:05:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-22 12:05:36,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:36,373 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:36,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 12:05:36,577 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 [2024-11-22 12:05:36,578 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:36,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:36,579 INFO L85 PathProgramCache]: Analyzing trace with hash 518660882, now seen corresponding path program 1 times [2024-11-22 12:05:36,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:36,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522247056] [2024-11-22 12:05:36,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:36,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-22 12:05:37,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:37,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522247056] [2024-11-22 12:05:37,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522247056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:37,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:37,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:05:37,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122531183] [2024-11-22 12:05:37,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:37,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:05:37,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:37,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:05:37,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:05:37,104 INFO L87 Difference]: Start difference. First operand 264 states and 431 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:37,243 INFO L93 Difference]: Finished difference Result 784 states and 1283 transitions. [2024-11-22 12:05:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:05:37,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 412 [2024-11-22 12:05:37,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:37,255 INFO L225 Difference]: With dead ends: 784 [2024-11-22 12:05:37,256 INFO L226 Difference]: Without dead ends: 523 [2024-11-22 12:05:37,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:05:37,259 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 397 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:37,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 838 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:05:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-22 12:05:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 314. [2024-11-22 12:05:37,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 252 states have (on average 1.5674603174603174) internal successors, (395), 252 states have internal predecessors, (395), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-22 12:05:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 515 transitions. [2024-11-22 12:05:37,316 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 515 transitions. Word has length 412 [2024-11-22 12:05:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:37,320 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 515 transitions. [2024-11-22 12:05:37,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:37,320 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 515 transitions. [2024-11-22 12:05:37,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-22 12:05:37,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:37,326 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:37,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 12:05:37,326 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:37,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2060171790, now seen corresponding path program 1 times [2024-11-22 12:05:37,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:37,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508225744] [2024-11-22 12:05:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:37,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-22 12:05:38,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:38,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508225744] [2024-11-22 12:05:38,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508225744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:38,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:38,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 12:05:38,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918457506] [2024-11-22 12:05:38,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:38,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 12:05:38,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:38,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 12:05:38,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:05:38,312 INFO L87 Difference]: Start difference. First operand 314 states and 515 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-22 12:05:38,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:38,822 INFO L93 Difference]: Finished difference Result 937 states and 1540 transitions. [2024-11-22 12:05:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:05:38,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 412 [2024-11-22 12:05:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:38,835 INFO L225 Difference]: With dead ends: 937 [2024-11-22 12:05:38,835 INFO L226 Difference]: Without dead ends: 626 [2024-11-22 12:05:38,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 12:05:38,839 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 468 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:38,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 2080 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 12:05:38,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-11-22 12:05:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 448. [2024-11-22 12:05:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 325 states have (on average 1.52) internal successors, (494), 325 states have internal predecessors, (494), 120 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2024-11-22 12:05:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 734 transitions. [2024-11-22 12:05:38,923 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 734 transitions. Word has length 412 [2024-11-22 12:05:38,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:38,925 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 734 transitions. [2024-11-22 12:05:38,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 2 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2024-11-22 12:05:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 734 transitions. [2024-11-22 12:05:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-11-22 12:05:38,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:38,934 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:38,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 12:05:38,935 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:38,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:38,936 INFO L85 PathProgramCache]: Analyzing trace with hash -973878256, now seen corresponding path program 1 times [2024-11-22 12:05:38,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:38,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631655461] [2024-11-22 12:05:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:38,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-22 12:05:39,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:39,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631655461] [2024-11-22 12:05:39,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631655461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:39,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:39,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 12:05:39,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551587505] [2024-11-22 12:05:39,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:39,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 12:05:39,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 12:05:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 12:05:39,665 INFO L87 Difference]: Start difference. First operand 448 states and 734 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:40,040 INFO L93 Difference]: Finished difference Result 960 states and 1578 transitions. [2024-11-22 12:05:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 12:05:40,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 412 [2024-11-22 12:05:40,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:40,048 INFO L225 Difference]: With dead ends: 960 [2024-11-22 12:05:40,048 INFO L226 Difference]: Without dead ends: 626 [2024-11-22 12:05:40,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:05:40,053 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 462 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:40,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1270 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 12:05:40,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-11-22 12:05:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 448. [2024-11-22 12:05:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 325 states have (on average 1.5169230769230768) internal successors, (493), 325 states have internal predecessors, (493), 120 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2024-11-22 12:05:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 733 transitions. [2024-11-22 12:05:40,114 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 733 transitions. Word has length 412 [2024-11-22 12:05:40,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:40,115 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 733 transitions. [2024-11-22 12:05:40,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:40,116 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 733 transitions. [2024-11-22 12:05:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-22 12:05:40,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:40,121 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:40,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 12:05:40,122 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:40,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash -53941101, now seen corresponding path program 1 times [2024-11-22 12:05:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:40,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015046233] [2024-11-22 12:05:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:40,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-22 12:05:40,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:40,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015046233] [2024-11-22 12:05:40,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015046233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:40,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:40,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:05:40,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962958035] [2024-11-22 12:05:40,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:40,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:05:40,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:40,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:05:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:05:40,891 INFO L87 Difference]: Start difference. First operand 448 states and 733 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:40,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:40,995 INFO L93 Difference]: Finished difference Result 1089 states and 1787 transitions. [2024-11-22 12:05:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:05:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 413 [2024-11-22 12:05:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:41,002 INFO L225 Difference]: With dead ends: 1089 [2024-11-22 12:05:41,002 INFO L226 Difference]: Without dead ends: 767 [2024-11-22 12:05:41,004 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 [2024-11-22 12:05:41,004 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 309 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:41,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 834 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 12:05:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-22 12:05:41,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 764. [2024-11-22 12:05:41,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 580 states have (on average 1.5258620689655173) internal successors, (885), 580 states have internal predecessors, (885), 180 states have call successors, (180), 3 states have call predecessors, (180), 3 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-22 12:05:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 1245 transitions. [2024-11-22 12:05:41,072 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 1245 transitions. Word has length 413 [2024-11-22 12:05:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:41,073 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 1245 transitions. [2024-11-22 12:05:41,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:41,074 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 1245 transitions. [2024-11-22 12:05:41,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-11-22 12:05:41,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:41,079 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:41,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 12:05:41,080 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:41,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:41,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1533009169, now seen corresponding path program 1 times [2024-11-22 12:05:41,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:41,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124272492] [2024-11-22 12:05:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:41,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-22 12:05:41,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:41,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124272492] [2024-11-22 12:05:41,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124272492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:41,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:41,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 12:05:41,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647341936] [2024-11-22 12:05:41,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:41,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 12:05:41,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:41,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 12:05:41,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 12:05:41,726 INFO L87 Difference]: Start difference. First operand 764 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:41,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:41,803 INFO L93 Difference]: Finished difference Result 1994 states and 3255 transitions. [2024-11-22 12:05:41,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 12:05:41,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 413 [2024-11-22 12:05:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:41,813 INFO L225 Difference]: With dead ends: 1994 [2024-11-22 12:05:41,813 INFO L226 Difference]: Without dead ends: 1379 [2024-11-22 12:05:41,816 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 [2024-11-22 12:05:41,818 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 269 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:41,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 848 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 12:05:41,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-11-22 12:05:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1375. [2024-11-22 12:05:41,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1069 states have (on average 1.5369504209541627) internal successors, (1643), 1069 states have internal predecessors, (1643), 300 states have call successors, (300), 5 states have call predecessors, (300), 5 states have return successors, (300), 300 states have call predecessors, (300), 300 states have call successors, (300) [2024-11-22 12:05:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2243 transitions. [2024-11-22 12:05:41,911 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2243 transitions. Word has length 413 [2024-11-22 12:05:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:41,913 INFO L471 AbstractCegarLoop]: Abstraction has 1375 states and 2243 transitions. [2024-11-22 12:05:41,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2243 transitions. [2024-11-22 12:05:41,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-22 12:05:41,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:41,917 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:41,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 12:05:41,918 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:41,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1523578745, now seen corresponding path program 1 times [2024-11-22 12:05:41,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:41,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579101028] [2024-11-22 12:05:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:41,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-22 12:05:42,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579101028] [2024-11-22 12:05:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579101028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:42,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:42,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:05:42,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855878222] [2024-11-22 12:05:42,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:42,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:05:42,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:42,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:05:42,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:05:42,842 INFO L87 Difference]: Start difference. First operand 1375 states and 2243 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:43,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:43,485 INFO L93 Difference]: Finished difference Result 3843 states and 6281 transitions. [2024-11-22 12:05:43,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:05:43,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 414 [2024-11-22 12:05:43,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:43,502 INFO L225 Difference]: With dead ends: 3843 [2024-11-22 12:05:43,502 INFO L226 Difference]: Without dead ends: 2617 [2024-11-22 12:05:43,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 12:05:43,508 INFO L432 NwaCegarLoop]: 644 mSDtfsCounter, 413 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:43,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 2030 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 12:05:43,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2024-11-22 12:05:43,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 1587. [2024-11-22 12:05:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1281 states have (on average 1.5573770491803278) internal successors, (1995), 1281 states have internal predecessors, (1995), 300 states have call successors, (300), 5 states have call predecessors, (300), 5 states have return successors, (300), 300 states have call predecessors, (300), 300 states have call successors, (300) [2024-11-22 12:05:43,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2595 transitions. [2024-11-22 12:05:43,648 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2595 transitions. Word has length 414 [2024-11-22 12:05:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:43,649 INFO L471 AbstractCegarLoop]: Abstraction has 1587 states and 2595 transitions. [2024-11-22 12:05:43,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:43,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2595 transitions. [2024-11-22 12:05:43,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-22 12:05:43,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:43,654 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:43,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 12:05:43,654 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:43,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash 283965739, now seen corresponding path program 1 times [2024-11-22 12:05:43,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:43,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115107168] [2024-11-22 12:05:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-22 12:05:45,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:45,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115107168] [2024-11-22 12:05:45,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115107168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:45,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:45,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:05:45,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676521661] [2024-11-22 12:05:45,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:45,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:05:45,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:05:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:05:45,370 INFO L87 Difference]: Start difference. First operand 1587 states and 2595 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:46,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:46,504 INFO L93 Difference]: Finished difference Result 5837 states and 9501 transitions. [2024-11-22 12:05:46,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 12:05:46,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 414 [2024-11-22 12:05:46,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:46,529 INFO L225 Difference]: With dead ends: 5837 [2024-11-22 12:05:46,529 INFO L226 Difference]: Without dead ends: 4399 [2024-11-22 12:05:46,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 12:05:46,536 INFO L432 NwaCegarLoop]: 661 mSDtfsCounter, 1433 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:46,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 2101 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 12:05:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2024-11-22 12:05:46,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 2261. [2024-11-22 12:05:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1927 states have (on average 1.5646081992734822) internal successors, (3015), 1931 states have internal predecessors, (3015), 324 states have call successors, (324), 9 states have call predecessors, (324), 9 states have return successors, (324), 320 states have call predecessors, (324), 324 states have call successors, (324) [2024-11-22 12:05:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3663 transitions. [2024-11-22 12:05:46,774 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3663 transitions. Word has length 414 [2024-11-22 12:05:46,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:46,774 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 3663 transitions. [2024-11-22 12:05:46,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3663 transitions. [2024-11-22 12:05:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-22 12:05:46,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:46,779 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:46,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 12:05:46,780 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:46,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:46,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2087773523, now seen corresponding path program 1 times [2024-11-22 12:05:46,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:46,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517877296] [2024-11-22 12:05:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:46,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:48,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 6 proven. 171 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-11-22 12:05:48,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:48,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517877296] [2024-11-22 12:05:48,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517877296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:05:48,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495266679] [2024-11-22 12:05:48,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:48,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:05:48,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:05:48,693 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) [2024-11-22 12:05:48,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 12:05:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:49,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 12:05:49,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:05:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 1049 proven. 12 refuted. 0 times theorem prover too weak. 6019 trivial. 0 not checked. [2024-11-22 12:05:49,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:05:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 165 proven. 12 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-11-22 12:05:49,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495266679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:05:49,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:05:49,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-22 12:05:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333351027] [2024-11-22 12:05:49,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:05:49,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 12:05:49,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:49,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 12:05:49,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-22 12:05:49,520 INFO L87 Difference]: Start difference. First operand 2261 states and 3663 transitions. Second operand has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 4 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (123), 4 states have call predecessors, (123), 4 states have call successors, (123) [2024-11-22 12:05:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:51,218 INFO L93 Difference]: Finished difference Result 4064 states and 6493 transitions. [2024-11-22 12:05:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 12:05:51,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 4 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (123), 4 states have call predecessors, (123), 4 states have call successors, (123) Word has length 414 [2024-11-22 12:05:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:51,232 INFO L225 Difference]: With dead ends: 4064 [2024-11-22 12:05:51,233 INFO L226 Difference]: Without dead ends: 1915 [2024-11-22 12:05:51,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 824 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 12:05:51,239 INFO L432 NwaCegarLoop]: 449 mSDtfsCounter, 1423 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:51,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 1257 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 12:05:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2024-11-22 12:05:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1895. [2024-11-22 12:05:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1538 states have (on average 1.4908972691807543) internal successors, (2293), 1542 states have internal predecessors, (2293), 324 states have call successors, (324), 32 states have call predecessors, (324), 32 states have return successors, (324), 320 states have call predecessors, (324), 324 states have call successors, (324) [2024-11-22 12:05:51,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2941 transitions. [2024-11-22 12:05:51,446 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2941 transitions. Word has length 414 [2024-11-22 12:05:51,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:51,447 INFO L471 AbstractCegarLoop]: Abstraction has 1895 states and 2941 transitions. [2024-11-22 12:05:51,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.3) internal successors, (173), 10 states have internal predecessors, (173), 4 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (123), 4 states have call predecessors, (123), 4 states have call successors, (123) [2024-11-22 12:05:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2941 transitions. [2024-11-22 12:05:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-22 12:05:51,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:51,453 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:51,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 12:05:51,654 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,SelfDestructingSolverStorable8 [2024-11-22 12:05:51,655 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:51,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash 433225577, now seen corresponding path program 1 times [2024-11-22 12:05:51,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:51,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216533401] [2024-11-22 12:05:51,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:51,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:05:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-22 12:05:53,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:05:53,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216533401] [2024-11-22 12:05:53,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216533401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 12:05:53,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 12:05:53,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 12:05:53,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796538507] [2024-11-22 12:05:53,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 12:05:53,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 12:05:53,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:05:53,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 12:05:53,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:05:53,142 INFO L87 Difference]: Start difference. First operand 1895 states and 2941 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:05:54,039 INFO L93 Difference]: Finished difference Result 4701 states and 7236 transitions. [2024-11-22 12:05:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 12:05:54,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 414 [2024-11-22 12:05:54,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:05:54,055 INFO L225 Difference]: With dead ends: 4701 [2024-11-22 12:05:54,055 INFO L226 Difference]: Without dead ends: 2957 [2024-11-22 12:05:54,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 12:05:54,061 INFO L432 NwaCegarLoop]: 411 mSDtfsCounter, 1080 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 12:05:54,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 705 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 12:05:54,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2024-11-22 12:05:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2063. [2024-11-22 12:05:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2063 states, 1701 states have (on average 1.5073486184597296) internal successors, (2564), 1705 states have internal predecessors, (2564), 324 states have call successors, (324), 37 states have call predecessors, (324), 37 states have return successors, (324), 320 states have call predecessors, (324), 324 states have call successors, (324) [2024-11-22 12:05:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 3212 transitions. [2024-11-22 12:05:54,279 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 3212 transitions. Word has length 414 [2024-11-22 12:05:54,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:05:54,280 INFO L471 AbstractCegarLoop]: Abstraction has 2063 states and 3212 transitions. [2024-11-22 12:05:54,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-11-22 12:05:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 3212 transitions. [2024-11-22 12:05:54,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-22 12:05:54,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:05:54,285 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:05:54,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 12:05:54,286 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:05:54,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:05:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash -587842777, now seen corresponding path program 1 times [2024-11-22 12:05:54,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:05:54,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201664014] [2024-11-22 12:05:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:05:54,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:05:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 183 proven. 330 refuted. 0 times theorem prover too weak. 6567 trivial. 0 not checked. [2024-11-22 12:06:00,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:00,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201664014] [2024-11-22 12:06:00,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201664014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:06:00,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749029093] [2024-11-22 12:06:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:00,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:00,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:06:00,907 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) [2024-11-22 12:06:00,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 12:06:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:01,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 12:06:01,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:06:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 4111 proven. 420 refuted. 0 times theorem prover too weak. 2549 trivial. 0 not checked. [2024-11-22 12:06:04,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:06:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 78 proven. 273 refuted. 0 times theorem prover too weak. 6729 trivial. 0 not checked. [2024-11-22 12:06:05,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749029093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:06:05,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:06:05,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 10] total 36 [2024-11-22 12:06:05,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964152620] [2024-11-22 12:06:05,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:06:05,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-22 12:06:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-22 12:06:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 12:06:05,615 INFO L87 Difference]: Start difference. First operand 2063 states and 3212 transitions. Second operand has 36 states, 35 states have (on average 9.714285714285714) internal successors, (340), 36 states have internal predecessors, (340), 14 states have call successors, (177), 5 states have call predecessors, (177), 10 states have return successors, (178), 13 states have call predecessors, (178), 14 states have call successors, (178) [2024-11-22 12:06:17,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:17,941 INFO L93 Difference]: Finished difference Result 15820 states and 25072 transitions. [2024-11-22 12:06:17,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-22 12:06:17,943 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 9.714285714285714) internal successors, (340), 36 states have internal predecessors, (340), 14 states have call successors, (177), 5 states have call predecessors, (177), 10 states have return successors, (178), 13 states have call predecessors, (178), 14 states have call successors, (178) Word has length 414 [2024-11-22 12:06:17,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:17,996 INFO L225 Difference]: With dead ends: 15820 [2024-11-22 12:06:17,996 INFO L226 Difference]: Without dead ends: 13912 [2024-11-22 12:06:18,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 923 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2689 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1920, Invalid=8180, Unknown=0, NotChecked=0, Total=10100 [2024-11-22 12:06:18,011 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 24524 mSDsluCounter, 4395 mSDsCounter, 0 mSdLazyCounter, 4989 mSolverCounterSat, 984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24527 SdHoareTripleChecker+Valid, 4665 SdHoareTripleChecker+Invalid, 5973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 984 IncrementalHoareTripleChecker+Valid, 4989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:18,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24527 Valid, 4665 Invalid, 5973 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [984 Valid, 4989 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-22 12:06:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13912 states. [2024-11-22 12:06:18,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13912 to 2605. [2024-11-22 12:06:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2221 states have (on average 1.5002251238181) internal successors, (3332), 2227 states have internal predecessors, (3332), 328 states have call successors, (328), 55 states have call predecessors, (328), 55 states have return successors, (328), 322 states have call predecessors, (328), 328 states have call successors, (328) [2024-11-22 12:06:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3988 transitions. [2024-11-22 12:06:18,415 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3988 transitions. Word has length 414 [2024-11-22 12:06:18,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:18,416 INFO L471 AbstractCegarLoop]: Abstraction has 2605 states and 3988 transitions. [2024-11-22 12:06:18,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 9.714285714285714) internal successors, (340), 36 states have internal predecessors, (340), 14 states have call successors, (177), 5 states have call predecessors, (177), 10 states have return successors, (178), 13 states have call predecessors, (178), 14 states have call successors, (178) [2024-11-22 12:06:18,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3988 transitions. [2024-11-22 12:06:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2024-11-22 12:06:18,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:18,422 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:18,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 12:06:18,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:18,628 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:18,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:18,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1598960027, now seen corresponding path program 1 times [2024-11-22 12:06:18,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:18,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041901913] [2024-11-22 12:06:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:18,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 264 proven. 249 refuted. 0 times theorem prover too weak. 6567 trivial. 0 not checked. [2024-11-22 12:06:20,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 12:06:20,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041901913] [2024-11-22 12:06:20,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041901913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 12:06:20,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615571285] [2024-11-22 12:06:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:20,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:20,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:06:20,786 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) [2024-11-22 12:06:20,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 12:06:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:21,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 12:06:21,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:06:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 4859 proven. 249 refuted. 0 times theorem prover too weak. 1972 trivial. 0 not checked. [2024-11-22 12:06:22,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 12:06:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 264 proven. 258 refuted. 0 times theorem prover too weak. 6558 trivial. 0 not checked. [2024-11-22 12:06:22,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615571285] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 12:06:22,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 12:06:22,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 22 [2024-11-22 12:06:22,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424220376] [2024-11-22 12:06:22,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 12:06:22,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 12:06:22,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 12:06:22,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 12:06:22,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2024-11-22 12:06:22,564 INFO L87 Difference]: Start difference. First operand 2605 states and 3988 transitions. Second operand has 22 states, 22 states have (on average 8.863636363636363) internal successors, (195), 22 states have internal predecessors, (195), 9 states have call successors, (142), 4 states have call predecessors, (142), 10 states have return successors, (144), 9 states have call predecessors, (144), 9 states have call successors, (144) [2024-11-22 12:06:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 12:06:23,520 INFO L93 Difference]: Finished difference Result 5159 states and 7852 transitions. [2024-11-22 12:06:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 12:06:23,521 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.863636363636363) internal successors, (195), 22 states have internal predecessors, (195), 9 states have call successors, (142), 4 states have call predecessors, (142), 10 states have return successors, (144), 9 states have call predecessors, (144), 9 states have call successors, (144) Word has length 414 [2024-11-22 12:06:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 12:06:23,533 INFO L225 Difference]: With dead ends: 5159 [2024-11-22 12:06:23,533 INFO L226 Difference]: Without dead ends: 2711 [2024-11-22 12:06:23,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 817 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=304, Invalid=688, Unknown=0, NotChecked=0, Total=992 [2024-11-22 12:06:23,545 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 1648 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 12:06:23,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 888 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 12:06:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2024-11-22 12:06:23,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2661. [2024-11-22 12:06:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2661 states, 2263 states have (on average 1.488731771984092) internal successors, (3369), 2269 states have internal predecessors, (3369), 328 states have call successors, (328), 69 states have call predecessors, (328), 69 states have return successors, (328), 322 states have call predecessors, (328), 328 states have call successors, (328) [2024-11-22 12:06:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2661 states to 2661 states and 4025 transitions. [2024-11-22 12:06:23,803 INFO L78 Accepts]: Start accepts. Automaton has 2661 states and 4025 transitions. Word has length 414 [2024-11-22 12:06:23,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 12:06:23,804 INFO L471 AbstractCegarLoop]: Abstraction has 2661 states and 4025 transitions. [2024-11-22 12:06:23,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.863636363636363) internal successors, (195), 22 states have internal predecessors, (195), 9 states have call successors, (142), 4 states have call predecessors, (142), 10 states have return successors, (144), 9 states have call predecessors, (144), 9 states have call successors, (144) [2024-11-22 12:06:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2661 states and 4025 transitions. [2024-11-22 12:06:23,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2024-11-22 12:06:23,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 12:06:23,810 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 12:06:23,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 12:06:24,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:24,011 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 12:06:24,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 12:06:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash 178667105, now seen corresponding path program 1 times [2024-11-22 12:06:24,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 12:06:24,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334271231] [2024-11-22 12:06:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:24,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 12:06:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 12:06:25,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804193132] [2024-11-22 12:06:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 12:06:25,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 12:06:25,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 12:06:25,201 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) [2024-11-22 12:06:25,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 12:06:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 12:06:25,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 1049 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-22 12:06:25,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 12:06:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 4273 proven. 450 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2024-11-22 12:06:29,801 INFO L311 TraceCheckSpWp]: Computing backward predicates...