./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.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 0facbc53e01d120e629a50b5211a29fd2bc23d2bc5e324a9623e8d1b2c65da11 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 22:21:08,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 22:21:08,381 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 22:21:08,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 22:21:08,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 22:21:08,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 22:21:08,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 22:21:08,429 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 22:21:08,441 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 22:21:08,443 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 22:21:08,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 22:21:08,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 22:21:08,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 22:21:08,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 22:21:08,445 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 22:21:08,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 22:21:08,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 22:21:08,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 22:21:08,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 22:21:08,450 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 22:21:08,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 22:21:08,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 22:21:08,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 22:21:08,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 22:21:08,452 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 22:21:08,452 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 22:21:08,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 22:21:08,453 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 22:21:08,453 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 22:21:08,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 22:21:08,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 22:21:08,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 22:21:08,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:21:08,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 22:21:08,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 22:21:08,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 22:21:08,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 22:21:08,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 22:21:08,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 22:21:08,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 22:21:08,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 22:21:08,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 22:21:08,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0facbc53e01d120e629a50b5211a29fd2bc23d2bc5e324a9623e8d1b2c65da11 [2024-11-18 22:21:08,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 22:21:08,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 22:21:08,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 22:21:08,749 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 22:21:08,749 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 22:21:08,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.i [2024-11-18 22:21:10,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 22:21:10,485 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 22:21:10,486 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-31.i [2024-11-18 22:21:10,503 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64bca090/fce5d446d0c74fa2ad11f684d26f2d52/FLAG5916d9c03 [2024-11-18 22:21:10,807 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64bca090/fce5d446d0c74fa2ad11f684d26f2d52 [2024-11-18 22:21:10,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 22:21:10,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 22:21:10,813 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 22:21:10,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 22:21:10,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 22:21:10,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:21:10" (1/1) ... [2024-11-18 22:21:10,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73897524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:10, skipping insertion in model container [2024-11-18 22:21:10,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:21:10" (1/1) ... [2024-11-18 22:21:10,849 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 22:21:11,012 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_loopvsstraightlinecode_100-1loop_file-31.i[916,929] [2024-11-18 22:21:11,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:21:11,122 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 22:21:11,133 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_loopvsstraightlinecode_100-1loop_file-31.i[916,929] [2024-11-18 22:21:11,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 22:21:11,220 INFO L204 MainTranslator]: Completed translation [2024-11-18 22:21:11,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11 WrapperNode [2024-11-18 22:21:11,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 22:21:11,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 22:21:11,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 22:21:11,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 22:21:11,228 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,313 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 264 [2024-11-18 22:21:11,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 22:21:11,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 22:21:11,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 22:21:11,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 22:21:11,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,342 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,385 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 22:21:11,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,386 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,427 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 22:21:11,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 22:21:11,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 22:21:11,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 22:21:11,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (1/1) ... [2024-11-18 22:21:11,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 22:21:11,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:21:11,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 22:21:11,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 22:21:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 22:21:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 22:21:11,553 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 22:21:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 22:21:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 22:21:11,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 22:21:11,668 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 22:21:11,673 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 22:21:12,172 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-18 22:21:12,172 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 22:21:12,187 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 22:21:12,187 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 22:21:12,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:21:12 BoogieIcfgContainer [2024-11-18 22:21:12,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 22:21:12,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 22:21:12,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 22:21:12,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 22:21:12,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:21:10" (1/3) ... [2024-11-18 22:21:12,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53835d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:21:12, skipping insertion in model container [2024-11-18 22:21:12,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:21:11" (2/3) ... [2024-11-18 22:21:12,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53835d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:21:12, skipping insertion in model container [2024-11-18 22:21:12,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:21:12" (3/3) ... [2024-11-18 22:21:12,198 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-31.i [2024-11-18 22:21:12,216 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 22:21:12,217 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 22:21:12,283 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 22:21:12,289 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;@1cfebae1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 22:21:12,289 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 22:21:12,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 79 states have internal predecessors, (114), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 22:21:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 22:21:12,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:12,315 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:12,315 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:12,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:12,322 INFO L85 PathProgramCache]: Analyzing trace with hash -317151865, now seen corresponding path program 1 times [2024-11-18 22:21:12,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:12,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720289938] [2024-11-18 22:21:12,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:12,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-18 22:21:12,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:12,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720289938] [2024-11-18 22:21:12,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720289938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 22:21:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366871985] [2024-11-18 22:21:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:12,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 22:21:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 22:21:12,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 22:21:12,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 22:21:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:12,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 22:21:12,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 22:21:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-11-18 22:21:13,053 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 22:21:13,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366871985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:13,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 22:21:13,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 22:21:13,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821451720] [2024-11-18 22:21:13,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:13,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 22:21:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:13,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 22:21:13,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:21:13,083 INFO L87 Difference]: Start difference. First operand has 107 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 79 states have internal predecessors, (114), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-18 22:21:13,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:13,112 INFO L93 Difference]: Finished difference Result 201 states and 340 transitions. [2024-11-18 22:21:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 22:21:13,114 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2024-11-18 22:21:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:13,121 INFO L225 Difference]: With dead ends: 201 [2024-11-18 22:21:13,121 INFO L226 Difference]: Without dead ends: 93 [2024-11-18 22:21:13,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 22:21:13,127 INFO L432 NwaCegarLoop]: 147 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, 147 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:13,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 22:21:13,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-18 22:21:13,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-18 22:21:13,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 65 states have (on average 1.4) internal successors, (91), 65 states have internal predecessors, (91), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 22:21:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 143 transitions. [2024-11-18 22:21:13,178 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 143 transitions. Word has length 172 [2024-11-18 22:21:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:13,178 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 143 transitions. [2024-11-18 22:21:13,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-18 22:21:13,179 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 143 transitions. [2024-11-18 22:21:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-18 22:21:13,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:13,183 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:13,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 22:21:13,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 22:21:13,385 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:13,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:13,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1351871951, now seen corresponding path program 1 times [2024-11-18 22:21:13,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:13,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938202427] [2024-11-18 22:21:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:13,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:14,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:14,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938202427] [2024-11-18 22:21:14,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938202427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:14,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:14,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:21:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97969686] [2024-11-18 22:21:14,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:14,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:21:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:21:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:21:14,013 INFO L87 Difference]: Start difference. First operand 93 states and 143 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:14,283 INFO L93 Difference]: Finished difference Result 274 states and 424 transitions. [2024-11-18 22:21:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:21:14,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 172 [2024-11-18 22:21:14,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:14,288 INFO L225 Difference]: With dead ends: 274 [2024-11-18 22:21:14,291 INFO L226 Difference]: Without dead ends: 184 [2024-11-18 22:21:14,293 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 [2024-11-18 22:21:14,296 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 92 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:14,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 385 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:21:14,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-18 22:21:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 152. [2024-11-18 22:21:14,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 97 states have (on average 1.3608247422680413) internal successors, (132), 97 states have internal predecessors, (132), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 22:21:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 236 transitions. [2024-11-18 22:21:14,347 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 236 transitions. Word has length 172 [2024-11-18 22:21:14,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:14,348 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 236 transitions. [2024-11-18 22:21:14,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 236 transitions. [2024-11-18 22:21:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 22:21:14,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:14,354 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:14,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 22:21:14,354 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:14,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:14,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1958210082, now seen corresponding path program 1 times [2024-11-18 22:21:14,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:14,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341801518] [2024-11-18 22:21:14,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:14,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:14,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:14,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341801518] [2024-11-18 22:21:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341801518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:14,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:14,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:21:14,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107013655] [2024-11-18 22:21:14,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:14,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:21:14,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:14,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:21:14,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:21:14,777 INFO L87 Difference]: Start difference. First operand 152 states and 236 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:14,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:14,987 INFO L93 Difference]: Finished difference Result 274 states and 423 transitions. [2024-11-18 22:21:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:21:14,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 173 [2024-11-18 22:21:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:14,992 INFO L225 Difference]: With dead ends: 274 [2024-11-18 22:21:14,994 INFO L226 Difference]: Without dead ends: 184 [2024-11-18 22:21:14,995 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 [2024-11-18 22:21:14,996 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 90 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:14,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 387 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:21:15,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-18 22:21:15,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 153. [2024-11-18 22:21:15,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.3571428571428572) internal successors, (133), 98 states have internal predecessors, (133), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 22:21:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 237 transitions. [2024-11-18 22:21:15,045 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 237 transitions. Word has length 173 [2024-11-18 22:21:15,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:15,047 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 237 transitions. [2024-11-18 22:21:15,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 237 transitions. [2024-11-18 22:21:15,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 22:21:15,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:15,053 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:15,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 22:21:15,054 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:15,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1271826764, now seen corresponding path program 1 times [2024-11-18 22:21:15,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:15,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190236817] [2024-11-18 22:21:15,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:15,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:15,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:15,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190236817] [2024-11-18 22:21:15,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190236817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:15,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:15,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 22:21:15,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223306123] [2024-11-18 22:21:15,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:15,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 22:21:15,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:15,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 22:21:15,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 22:21:15,551 INFO L87 Difference]: Start difference. First operand 153 states and 237 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:15,741 INFO L93 Difference]: Finished difference Result 293 states and 452 transitions. [2024-11-18 22:21:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 22:21:15,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 174 [2024-11-18 22:21:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:15,744 INFO L225 Difference]: With dead ends: 293 [2024-11-18 22:21:15,744 INFO L226 Difference]: Without dead ends: 192 [2024-11-18 22:21:15,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:21:15,746 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 97 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:15,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 398 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:21:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-18 22:21:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 155. [2024-11-18 22:21:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 100 states have (on average 1.31) internal successors, (131), 100 states have internal predecessors, (131), 52 states have call successors, (52), 2 states have call predecessors, (52), 2 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 22:21:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 235 transitions. [2024-11-18 22:21:15,769 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 235 transitions. Word has length 174 [2024-11-18 22:21:15,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:15,769 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 235 transitions. [2024-11-18 22:21:15,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:15,770 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 235 transitions. [2024-11-18 22:21:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 22:21:15,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:15,774 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:15,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 22:21:15,775 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:15,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:15,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1977645201, now seen corresponding path program 1 times [2024-11-18 22:21:15,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:15,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709900785] [2024-11-18 22:21:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:15,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:16,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:16,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709900785] [2024-11-18 22:21:16,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709900785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:16,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:16,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 22:21:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630712485] [2024-11-18 22:21:16,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:16,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 22:21:16,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:16,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 22:21:16,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 22:21:16,153 INFO L87 Difference]: Start difference. First operand 155 states and 235 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:16,391 INFO L93 Difference]: Finished difference Result 415 states and 630 transitions. [2024-11-18 22:21:16,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 22:21:16,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-18 22:21:16,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:16,395 INFO L225 Difference]: With dead ends: 415 [2024-11-18 22:21:16,395 INFO L226 Difference]: Without dead ends: 316 [2024-11-18 22:21:16,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:21:16,397 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 216 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:16,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 663 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 22:21:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-18 22:21:16,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 226. [2024-11-18 22:21:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 144 states have (on average 1.2777777777777777) internal successors, (184), 144 states have internal predecessors, (184), 78 states have call successors, (78), 3 states have call predecessors, (78), 3 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-18 22:21:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 340 transitions. [2024-11-18 22:21:16,431 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 340 transitions. Word has length 175 [2024-11-18 22:21:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:16,432 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 340 transitions. [2024-11-18 22:21:16,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:16,433 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 340 transitions. [2024-11-18 22:21:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 22:21:16,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:16,435 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:16,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 22:21:16,436 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:16,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:16,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2098467377, now seen corresponding path program 1 times [2024-11-18 22:21:16,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:16,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313870623] [2024-11-18 22:21:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:16,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:20,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313870623] [2024-11-18 22:21:20,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313870623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:20,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:20,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 22:21:20,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662959815] [2024-11-18 22:21:20,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:20,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 22:21:20,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:20,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 22:21:20,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:21:20,327 INFO L87 Difference]: Start difference. First operand 226 states and 340 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:21,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:21,074 INFO L93 Difference]: Finished difference Result 534 states and 789 transitions. [2024-11-18 22:21:21,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:21:21,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-18 22:21:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:21,078 INFO L225 Difference]: With dead ends: 534 [2024-11-18 22:21:21,078 INFO L226 Difference]: Without dead ends: 370 [2024-11-18 22:21:21,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:21:21,080 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 155 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:21,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 543 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 22:21:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-18 22:21:21,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 325. [2024-11-18 22:21:21,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 222 states have (on average 1.3108108108108107) internal successors, (291), 224 states have internal predecessors, (291), 96 states have call successors, (96), 6 states have call predecessors, (96), 6 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-18 22:21:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 483 transitions. [2024-11-18 22:21:21,127 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 483 transitions. Word has length 175 [2024-11-18 22:21:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:21,128 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 483 transitions. [2024-11-18 22:21:21,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 483 transitions. [2024-11-18 22:21:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 22:21:21,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:21,130 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:21,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 22:21:21,131 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:21,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1418409007, now seen corresponding path program 1 times [2024-11-18 22:21:21,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:21,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047601368] [2024-11-18 22:21:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:21,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:21,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:21,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047601368] [2024-11-18 22:21:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047601368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:21,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:21,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 22:21:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403787341] [2024-11-18 22:21:21,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:21,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 22:21:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:21,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 22:21:21,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 22:21:21,698 INFO L87 Difference]: Start difference. First operand 325 states and 483 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:22,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:22,278 INFO L93 Difference]: Finished difference Result 765 states and 1135 transitions. [2024-11-18 22:21:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:21:22,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-18 22:21:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:22,286 INFO L225 Difference]: With dead ends: 765 [2024-11-18 22:21:22,286 INFO L226 Difference]: Without dead ends: 506 [2024-11-18 22:21:22,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-18 22:21:22,289 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 311 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:22,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 666 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:21:22,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-18 22:21:22,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 484. [2024-11-18 22:21:22,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 323 states have (on average 1.2817337461300309) internal successors, (414), 327 states have internal predecessors, (414), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:21:22,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 710 transitions. [2024-11-18 22:21:22,363 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 710 transitions. Word has length 175 [2024-11-18 22:21:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:22,367 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 710 transitions. [2024-11-18 22:21:22,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 710 transitions. [2024-11-18 22:21:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 22:21:22,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:22,369 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:22,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 22:21:22,370 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:22,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:22,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1728432849, now seen corresponding path program 1 times [2024-11-18 22:21:22,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:22,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141188634] [2024-11-18 22:21:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:22,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:26,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:26,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141188634] [2024-11-18 22:21:26,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141188634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:26,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:26,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 22:21:26,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215220174] [2024-11-18 22:21:26,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:26,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 22:21:26,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:26,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 22:21:26,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-18 22:21:26,960 INFO L87 Difference]: Start difference. First operand 484 states and 710 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:28,118 INFO L93 Difference]: Finished difference Result 891 states and 1291 transitions. [2024-11-18 22:21:28,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 22:21:28,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 175 [2024-11-18 22:21:28,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:28,124 INFO L225 Difference]: With dead ends: 891 [2024-11-18 22:21:28,124 INFO L226 Difference]: Without dead ends: 574 [2024-11-18 22:21:28,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:21:28,127 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 136 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:28,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 692 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 22:21:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-18 22:21:28,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 482. [2024-11-18 22:21:28,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 321 states have (on average 1.280373831775701) internal successors, (411), 325 states have internal predecessors, (411), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:21:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 707 transitions. [2024-11-18 22:21:28,187 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 707 transitions. Word has length 175 [2024-11-18 22:21:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:28,188 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 707 transitions. [2024-11-18 22:21:28,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 707 transitions. [2024-11-18 22:21:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:21:28,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:28,192 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:28,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 22:21:28,193 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:28,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:28,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1261176580, now seen corresponding path program 1 times [2024-11-18 22:21:28,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:28,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808499775] [2024-11-18 22:21:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:28,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:31,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808499775] [2024-11-18 22:21:31,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808499775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:31,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:31,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 22:21:31,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753078812] [2024-11-18 22:21:31,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:31,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 22:21:31,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:31,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 22:21:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 22:21:31,337 INFO L87 Difference]: Start difference. First operand 482 states and 707 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:32,235 INFO L93 Difference]: Finished difference Result 887 states and 1293 transitions. [2024-11-18 22:21:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:21:32,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:21:32,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:32,241 INFO L225 Difference]: With dead ends: 887 [2024-11-18 22:21:32,241 INFO L226 Difference]: Without dead ends: 570 [2024-11-18 22:21:32,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:21:32,245 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 67 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:32,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 596 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 22:21:32,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-18 22:21:32,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 496. [2024-11-18 22:21:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 335 states have (on average 1.3014925373134327) internal successors, (436), 339 states have internal predecessors, (436), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:21:32,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 732 transitions. [2024-11-18 22:21:32,292 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 732 transitions. Word has length 176 [2024-11-18 22:21:32,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:32,292 INFO L471 AbstractCegarLoop]: Abstraction has 496 states and 732 transitions. [2024-11-18 22:21:32,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:32,293 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 732 transitions. [2024-11-18 22:21:32,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:21:32,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:32,294 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:32,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 22:21:32,295 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:32,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1885665276, now seen corresponding path program 1 times [2024-11-18 22:21:32,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:32,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140243235] [2024-11-18 22:21:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:32,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:33,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:33,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140243235] [2024-11-18 22:21:33,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140243235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:33,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:33,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 22:21:33,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772257400] [2024-11-18 22:21:33,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:33,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:21:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:33,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:21:33,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:21:33,304 INFO L87 Difference]: Start difference. First operand 496 states and 732 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:34,589 INFO L93 Difference]: Finished difference Result 907 states and 1331 transitions. [2024-11-18 22:21:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 22:21:34,591 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:21:34,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:34,599 INFO L225 Difference]: With dead ends: 907 [2024-11-18 22:21:34,599 INFO L226 Difference]: Without dead ends: 572 [2024-11-18 22:21:34,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-11-18 22:21:34,601 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 649 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:34,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 823 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 22:21:34,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-18 22:21:34,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 514. [2024-11-18 22:21:34,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 353 states have (on average 1.3087818696883853) internal successors, (462), 357 states have internal predecessors, (462), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:21:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 758 transitions. [2024-11-18 22:21:34,647 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 758 transitions. Word has length 176 [2024-11-18 22:21:34,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:34,648 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 758 transitions. [2024-11-18 22:21:34,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 758 transitions. [2024-11-18 22:21:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:21:34,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:34,651 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:34,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 22:21:34,651 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:34,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:34,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1729243650, now seen corresponding path program 1 times [2024-11-18 22:21:34,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:34,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437359617] [2024-11-18 22:21:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:34,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:41,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:41,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437359617] [2024-11-18 22:21:41,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437359617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:41,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:41,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 22:21:41,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803563179] [2024-11-18 22:21:41,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:41,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 22:21:41,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:41,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 22:21:41,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:21:41,321 INFO L87 Difference]: Start difference. First operand 514 states and 758 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:49,012 INFO L93 Difference]: Finished difference Result 889 states and 1308 transitions. [2024-11-18 22:21:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 22:21:49,013 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:21:49,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:49,020 INFO L225 Difference]: With dead ends: 889 [2024-11-18 22:21:49,020 INFO L226 Difference]: Without dead ends: 561 [2024-11-18 22:21:49,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2024-11-18 22:21:49,023 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 370 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:49,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1075 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-18 22:21:49,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-11-18 22:21:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 516. [2024-11-18 22:21:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 355 states have (on average 1.3126760563380282) internal successors, (466), 359 states have internal predecessors, (466), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:21:49,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 762 transitions. [2024-11-18 22:21:49,087 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 762 transitions. Word has length 176 [2024-11-18 22:21:49,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:49,089 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 762 transitions. [2024-11-18 22:21:49,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:49,090 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 762 transitions. [2024-11-18 22:21:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:21:49,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:49,092 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:49,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 22:21:49,092 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:49,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:49,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1003011142, now seen corresponding path program 1 times [2024-11-18 22:21:49,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:49,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2640123] [2024-11-18 22:21:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:49,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:51,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:51,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2640123] [2024-11-18 22:21:51,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2640123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:51,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:51,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 22:21:51,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307041198] [2024-11-18 22:21:51,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:51,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 22:21:51,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:51,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 22:21:51,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-18 22:21:51,207 INFO L87 Difference]: Start difference. First operand 516 states and 762 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:51,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:51,949 INFO L93 Difference]: Finished difference Result 1077 states and 1581 transitions. [2024-11-18 22:21:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 22:21:51,950 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:21:51,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:51,955 INFO L225 Difference]: With dead ends: 1077 [2024-11-18 22:21:51,955 INFO L226 Difference]: Without dead ends: 749 [2024-11-18 22:21:51,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2024-11-18 22:21:51,957 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 157 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:51,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 703 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 22:21:51,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-18 22:21:52,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 567. [2024-11-18 22:21:52,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 406 states have (on average 1.3374384236453203) internal successors, (543), 410 states have internal predecessors, (543), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:21:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 839 transitions. [2024-11-18 22:21:52,004 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 839 transitions. Word has length 176 [2024-11-18 22:21:52,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:52,005 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 839 transitions. [2024-11-18 22:21:52,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 839 transitions. [2024-11-18 22:21:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:21:52,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:52,007 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:52,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 22:21:52,007 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:52,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:52,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2143830714, now seen corresponding path program 1 times [2024-11-18 22:21:52,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:52,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563837636] [2024-11-18 22:21:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:52,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:53,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:53,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563837636] [2024-11-18 22:21:53,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563837636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:53,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:53,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 22:21:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638686791] [2024-11-18 22:21:53,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:53,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 22:21:53,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 22:21:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 22:21:53,058 INFO L87 Difference]: Start difference. First operand 567 states and 839 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:53,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:21:53,869 INFO L93 Difference]: Finished difference Result 987 states and 1459 transitions. [2024-11-18 22:21:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 22:21:53,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:21:53,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:21:53,874 INFO L225 Difference]: With dead ends: 987 [2024-11-18 22:21:53,875 INFO L226 Difference]: Without dead ends: 609 [2024-11-18 22:21:53,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-11-18 22:21:53,876 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 394 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 22:21:53,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 798 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 22:21:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-11-18 22:21:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 568. [2024-11-18 22:21:53,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 407 states have (on average 1.3366093366093366) internal successors, (544), 411 states have internal predecessors, (544), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:21:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 840 transitions. [2024-11-18 22:21:53,922 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 840 transitions. Word has length 176 [2024-11-18 22:21:53,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:21:53,922 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 840 transitions. [2024-11-18 22:21:53,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:21:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 840 transitions. [2024-11-18 22:21:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 22:21:53,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:21:53,924 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:21:53,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 22:21:53,925 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:21:53,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:21:53,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1471078212, now seen corresponding path program 1 times [2024-11-18 22:21:53,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:21:53,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031884442] [2024-11-18 22:21:53,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:21:53,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:21:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:21:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:21:58,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:21:58,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031884442] [2024-11-18 22:21:58,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031884442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:21:58,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:21:58,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 22:21:58,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98561325] [2024-11-18 22:21:58,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:21:58,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 22:21:58,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:21:58,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 22:21:58,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-18 22:21:58,468 INFO L87 Difference]: Start difference. First operand 568 states and 840 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:22:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:01,509 INFO L93 Difference]: Finished difference Result 1032 states and 1511 transitions. [2024-11-18 22:22:01,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-18 22:22:01,510 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-11-18 22:22:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:01,515 INFO L225 Difference]: With dead ends: 1032 [2024-11-18 22:22:01,515 INFO L226 Difference]: Without dead ends: 660 [2024-11-18 22:22:01,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 22:22:01,519 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 506 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 22:22:01,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1504 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 22:22:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-18 22:22:01,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 568. [2024-11-18 22:22:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 407 states have (on average 1.3366093366093366) internal successors, (544), 411 states have internal predecessors, (544), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:22:01,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 840 transitions. [2024-11-18 22:22:01,562 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 840 transitions. Word has length 176 [2024-11-18 22:22:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:01,563 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 840 transitions. [2024-11-18 22:22:01,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:22:01,563 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 840 transitions. [2024-11-18 22:22:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:22:01,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:01,564 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:01,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 22:22:01,565 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:01,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:01,565 INFO L85 PathProgramCache]: Analyzing trace with hash -44818092, now seen corresponding path program 1 times [2024-11-18 22:22:01,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:01,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969167858] [2024-11-18 22:22:01,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:01,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:05,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:22:05,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:22:05,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969167858] [2024-11-18 22:22:05,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969167858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:22:05,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:22:05,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 22:22:05,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534003845] [2024-11-18 22:22:05,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:22:05,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 22:22:05,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:22:05,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 22:22:05,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-18 22:22:05,442 INFO L87 Difference]: Start difference. First operand 568 states and 840 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:22:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:07,428 INFO L93 Difference]: Finished difference Result 1081 states and 1578 transitions. [2024-11-18 22:22:07,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-18 22:22:07,429 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-18 22:22:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:07,433 INFO L225 Difference]: With dead ends: 1081 [2024-11-18 22:22:07,434 INFO L226 Difference]: Without dead ends: 709 [2024-11-18 22:22:07,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 22:22:07,436 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 513 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 22:22:07,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1761 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 22:22:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-18 22:22:07,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 586. [2024-11-18 22:22:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 425 states have (on average 1.3435294117647059) internal successors, (571), 429 states have internal predecessors, (571), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:22:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 867 transitions. [2024-11-18 22:22:07,478 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 867 transitions. Word has length 177 [2024-11-18 22:22:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:07,478 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 867 transitions. [2024-11-18 22:22:07,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:22:07,478 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 867 transitions. [2024-11-18 22:22:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:22:07,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:07,480 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:07,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 22:22:07,480 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:07,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1361472786, now seen corresponding path program 1 times [2024-11-18 22:22:07,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:07,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205143355] [2024-11-18 22:22:07,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:07,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:22:09,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:22:09,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205143355] [2024-11-18 22:22:09,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205143355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:22:09,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:22:09,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 22:22:09,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725143587] [2024-11-18 22:22:09,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:22:09,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:22:09,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:22:09,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:22:09,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:22:09,384 INFO L87 Difference]: Start difference. First operand 586 states and 867 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:22:10,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:10,834 INFO L93 Difference]: Finished difference Result 1304 states and 1907 transitions. [2024-11-18 22:22:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 22:22:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-18 22:22:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:10,840 INFO L225 Difference]: With dead ends: 1304 [2024-11-18 22:22:10,841 INFO L226 Difference]: Without dead ends: 932 [2024-11-18 22:22:10,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2024-11-18 22:22:10,843 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 604 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 22:22:10,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1792 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 22:22:10,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2024-11-18 22:22:10,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 588. [2024-11-18 22:22:10,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 427 states have (on average 1.3442622950819672) internal successors, (574), 431 states have internal predecessors, (574), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:22:10,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 870 transitions. [2024-11-18 22:22:10,893 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 870 transitions. Word has length 177 [2024-11-18 22:22:10,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:10,893 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 870 transitions. [2024-11-18 22:22:10,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:22:10,894 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 870 transitions. [2024-11-18 22:22:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:22:10,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:10,895 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:10,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 22:22:10,895 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:10,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash 213347346, now seen corresponding path program 1 times [2024-11-18 22:22:10,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:10,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515181868] [2024-11-18 22:22:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:10,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 22:22:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-11-18 22:22:13,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 22:22:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515181868] [2024-11-18 22:22:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515181868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 22:22:13,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 22:22:13,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 22:22:13,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426285133] [2024-11-18 22:22:13,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 22:22:13,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 22:22:13,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 22:22:13,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 22:22:13,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 22:22:13,500 INFO L87 Difference]: Start difference. First operand 588 states and 870 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:22:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 22:22:15,234 INFO L93 Difference]: Finished difference Result 1127 states and 1649 transitions. [2024-11-18 22:22:15,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 22:22:15,236 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 177 [2024-11-18 22:22:15,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 22:22:15,240 INFO L225 Difference]: With dead ends: 1127 [2024-11-18 22:22:15,241 INFO L226 Difference]: Without dead ends: 755 [2024-11-18 22:22:15,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2024-11-18 22:22:15,243 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 522 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 22:22:15,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1086 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 22:22:15,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-18 22:22:15,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 589. [2024-11-18 22:22:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 428 states have (on average 1.3457943925233644) internal successors, (576), 432 states have internal predecessors, (576), 148 states have call successors, (148), 12 states have call predecessors, (148), 12 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-18 22:22:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 872 transitions. [2024-11-18 22:22:15,298 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 872 transitions. Word has length 177 [2024-11-18 22:22:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 22:22:15,298 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 872 transitions. [2024-11-18 22:22:15,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-18 22:22:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 872 transitions. [2024-11-18 22:22:15,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 22:22:15,299 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 22:22:15,300 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 22:22:15,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 22:22:15,300 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 22:22:15,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 22:22:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash 893405716, now seen corresponding path program 1 times [2024-11-18 22:22:15,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 22:22:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253210253] [2024-11-18 22:22:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 22:22:15,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 22:22:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat