./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-63.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-63.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 ac9315a2690c53799e4a492753ac2b98281ab80b3a768a5d84279facf8e19983 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:45:47,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:45:47,542 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:45:47,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:45:47,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:45:47,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:45:47,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:45:47,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:45:47,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:45:47,572 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:45:47,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:45:47,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:45:47,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:45:47,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:45:47,576 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:45:47,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:45:47,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:45:47,576 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:45:47,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:45:47,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:45:47,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:45:47,578 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:45:47,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:45:47,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:45:47,579 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:45:47,579 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:45:47,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:45:47,579 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:45:47,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:45:47,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:45:47,580 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:45:47,580 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:45:47,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:45:47,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:45:47,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:45:47,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:45:47,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:45:47,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:45:47,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:45:47,581 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:45:47,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:45:47,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:45:47,583 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac9315a2690c53799e4a492753ac2b98281ab80b3a768a5d84279facf8e19983 [2024-11-18 23:45:47,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:45:47,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:45:47,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:45:47,900 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:45:47,901 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:45:47,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-63.i [2024-11-18 23:45:49,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:45:49,496 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:45:49,497 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-63.i [2024-11-18 23:45:49,506 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e64f449/ace034b7be7a43baa27ff2a14c4bf171/FLAG926def9ed [2024-11-18 23:45:49,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e64f449/ace034b7be7a43baa27ff2a14c4bf171 [2024-11-18 23:45:49,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:45:49,520 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:45:49,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:45:49,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:45:49,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:45:49,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:49,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4becc803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49, skipping insertion in model container [2024-11-18 23:45:49,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:49,559 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:45:49,710 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-63.i[916,929] [2024-11-18 23:45:49,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:45:49,835 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:45:49,844 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-63.i[916,929] [2024-11-18 23:45:49,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:45:49,907 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:45:49,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49 WrapperNode [2024-11-18 23:45:49,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:45:49,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:45:49,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:45:49,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:45:49,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:49,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,035 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 582 [2024-11-18 23:45:50,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:45:50,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:45:50,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:45:50,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:45:50,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,075 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,135 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 23:45:50,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,166 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:45:50,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:45:50,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:45:50,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:45:50,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (1/1) ... [2024-11-18 23:45:50,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:45:50,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:50,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 23:45:50,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 23:45:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:45:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:45:50,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:45:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:45:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:45:50,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:45:50,374 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:45:50,376 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:45:51,137 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-11-18 23:45:51,137 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:45:51,154 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:45:51,154 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:45:51,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:45:51 BoogieIcfgContainer [2024-11-18 23:45:51,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:45:51,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:45:51,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:45:51,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:45:51,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:45:49" (1/3) ... [2024-11-18 23:45:51,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf8ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:45:51, skipping insertion in model container [2024-11-18 23:45:51,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:45:49" (2/3) ... [2024-11-18 23:45:51,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf8ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:45:51, skipping insertion in model container [2024-11-18 23:45:51,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:45:51" (3/3) ... [2024-11-18 23:45:51,163 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-63.i [2024-11-18 23:45:51,174 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:45:51,175 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:45:51,225 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:45:51,232 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;@4487ebc1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:45:51,232 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:45:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 236 states, 186 states have (on average 1.5) internal successors, (279), 187 states have internal predecessors, (279), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-18 23:45:51,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-11-18 23:45:51,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:51,256 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:51,256 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:51,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1551608360, now seen corresponding path program 1 times [2024-11-18 23:45:51,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:51,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591788130] [2024-11-18 23:45:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:51,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-18 23:45:51,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591788130] [2024-11-18 23:45:51,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591788130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:45:51,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337958850] [2024-11-18 23:45:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:51,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:45:51,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:45:51,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:45:51,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 23:45:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:51,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:45:51,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:45:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-18 23:45:51,985 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:45:51,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337958850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:51,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:45:51,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:45:51,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729448490] [2024-11-18 23:45:51,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:51,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:45:51,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:45:52,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:45:52,033 INFO L87 Difference]: Start difference. First operand has 236 states, 186 states have (on average 1.5) internal successors, (279), 187 states have internal predecessors, (279), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-18 23:45:52,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:52,073 INFO L93 Difference]: Finished difference Result 464 states and 785 transitions. [2024-11-18 23:45:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:45:52,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) Word has length 325 [2024-11-18 23:45:52,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:52,082 INFO L225 Difference]: With dead ends: 464 [2024-11-18 23:45:52,082 INFO L226 Difference]: Without dead ends: 231 [2024-11-18 23:45:52,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:45:52,087 INFO L432 NwaCegarLoop]: 360 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, 360 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:52,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:45:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-18 23:45:52,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-18 23:45:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 182 states have (on average 1.4615384615384615) internal successors, (266), 182 states have internal predecessors, (266), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-18 23:45:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 360 transitions. [2024-11-18 23:45:52,141 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 360 transitions. Word has length 325 [2024-11-18 23:45:52,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:52,141 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 360 transitions. [2024-11-18 23:45:52,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-18 23:45:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 360 transitions. [2024-11-18 23:45:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-11-18 23:45:52,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:52,149 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:52,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 23:45:52,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:45:52,351 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:52,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1676363622, now seen corresponding path program 1 times [2024-11-18 23:45:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:52,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951166625] [2024-11-18 23:45:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:52,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:45:52,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:52,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951166625] [2024-11-18 23:45:52,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951166625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:52,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:52,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:45:52,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50493649] [2024-11-18 23:45:52,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:52,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:45:52,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:45:52,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:45:52,693 INFO L87 Difference]: Start difference. First operand 231 states and 360 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:52,764 INFO L93 Difference]: Finished difference Result 568 states and 880 transitions. [2024-11-18 23:45:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:45:52,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 325 [2024-11-18 23:45:52,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:52,768 INFO L225 Difference]: With dead ends: 568 [2024-11-18 23:45:52,769 INFO L226 Difference]: Without dead ends: 340 [2024-11-18 23:45:52,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:45:52,773 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 186 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:52,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 761 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:45:52,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-18 23:45:52,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 337. [2024-11-18 23:45:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 279 states have (on average 1.4587813620071686) internal successors, (407), 280 states have internal predecessors, (407), 55 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-18 23:45:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 517 transitions. [2024-11-18 23:45:52,809 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 517 transitions. Word has length 325 [2024-11-18 23:45:52,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:52,812 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 517 transitions. [2024-11-18 23:45:52,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 517 transitions. [2024-11-18 23:45:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-11-18 23:45:52,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:52,817 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:52,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:45:52,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:52,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1721210396, now seen corresponding path program 1 times [2024-11-18 23:45:52,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:52,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644190031] [2024-11-18 23:45:52,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:52,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:45:53,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:53,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644190031] [2024-11-18 23:45:53,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644190031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:53,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:53,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:45:53,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116788944] [2024-11-18 23:45:53,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:53,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:45:53,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:45:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:45:53,565 INFO L87 Difference]: Start difference. First operand 337 states and 517 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:53,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:53,733 INFO L93 Difference]: Finished difference Result 1111 states and 1687 transitions. [2024-11-18 23:45:53,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:45:53,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 325 [2024-11-18 23:45:53,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:53,742 INFO L225 Difference]: With dead ends: 1111 [2024-11-18 23:45:53,742 INFO L226 Difference]: Without dead ends: 777 [2024-11-18 23:45:53,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:45:53,745 INFO L432 NwaCegarLoop]: 476 mSDtfsCounter, 362 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:53,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1126 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:45:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-18 23:45:53,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 588. [2024-11-18 23:45:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 516 states have (on average 1.4709302325581395) internal successors, (759), 519 states have internal predecessors, (759), 67 states have call successors, (67), 4 states have call predecessors, (67), 4 states have return successors, (67), 64 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-18 23:45:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 893 transitions. [2024-11-18 23:45:53,777 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 893 transitions. Word has length 325 [2024-11-18 23:45:53,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:53,778 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 893 transitions. [2024-11-18 23:45:53,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 893 transitions. [2024-11-18 23:45:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-11-18 23:45:53,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:53,782 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:53,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:45:53,782 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:53,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:53,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1648823838, now seen corresponding path program 1 times [2024-11-18 23:45:53,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:53,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226436335] [2024-11-18 23:45:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:53,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:54,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:45:54,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:54,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226436335] [2024-11-18 23:45:54,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226436335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:54,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:54,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:45:54,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867540208] [2024-11-18 23:45:54,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:54,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:45:54,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:54,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:45:54,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:45:54,300 INFO L87 Difference]: Start difference. First operand 588 states and 893 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:54,413 INFO L93 Difference]: Finished difference Result 1355 states and 2045 transitions. [2024-11-18 23:45:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:45:54,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 325 [2024-11-18 23:45:54,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:54,419 INFO L225 Difference]: With dead ends: 1355 [2024-11-18 23:45:54,419 INFO L226 Difference]: Without dead ends: 770 [2024-11-18 23:45:54,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:45:54,421 INFO L432 NwaCegarLoop]: 576 mSDtfsCounter, 281 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:54,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1369 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:45:54,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-18 23:45:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 520. [2024-11-18 23:45:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 463 states have (on average 1.4643628509719222) internal successors, (678), 464 states have internal predecessors, (678), 53 states have call successors, (53), 3 states have call predecessors, (53), 3 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-18 23:45:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 784 transitions. [2024-11-18 23:45:54,460 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 784 transitions. Word has length 325 [2024-11-18 23:45:54,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:54,460 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 784 transitions. [2024-11-18 23:45:54,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:54,461 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 784 transitions. [2024-11-18 23:45:54,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-18 23:45:54,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:54,464 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:54,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:45:54,465 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:54,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:54,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1191390021, now seen corresponding path program 1 times [2024-11-18 23:45:54,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:54,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134135612] [2024-11-18 23:45:54,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:54,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:45:55,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:55,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134135612] [2024-11-18 23:45:55,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134135612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:55,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:55,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:45:55,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285770128] [2024-11-18 23:45:55,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:55,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:45:55,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:55,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:45:55,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:45:55,145 INFO L87 Difference]: Start difference. First operand 520 states and 784 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:55,229 INFO L93 Difference]: Finished difference Result 1457 states and 2181 transitions. [2024-11-18 23:45:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:45:55,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 326 [2024-11-18 23:45:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:55,233 INFO L225 Difference]: With dead ends: 1457 [2024-11-18 23:45:55,233 INFO L226 Difference]: Without dead ends: 938 [2024-11-18 23:45:55,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:45:55,234 INFO L432 NwaCegarLoop]: 390 mSDtfsCounter, 642 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:55,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 913 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:45:55,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2024-11-18 23:45:55,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 545. [2024-11-18 23:45:55,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 494 states have (on average 1.4959514170040487) internal successors, (739), 494 states have internal predecessors, (739), 47 states have call successors, (47), 3 states have call predecessors, (47), 3 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-18 23:45:55,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 833 transitions. [2024-11-18 23:45:55,249 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 833 transitions. Word has length 326 [2024-11-18 23:45:55,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:55,249 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 833 transitions. [2024-11-18 23:45:55,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 833 transitions. [2024-11-18 23:45:55,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-18 23:45:55,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:55,252 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:55,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:45:55,252 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:55,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1635290695, now seen corresponding path program 1 times [2024-11-18 23:45:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:55,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071184621] [2024-11-18 23:45:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:55,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:45:55,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:55,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071184621] [2024-11-18 23:45:55,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071184621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:55,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:45:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623028307] [2024-11-18 23:45:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:55,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:45:55,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:45:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:45:55,356 INFO L87 Difference]: Start difference. First operand 545 states and 833 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:55,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:55,393 INFO L93 Difference]: Finished difference Result 1420 states and 2169 transitions. [2024-11-18 23:45:55,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:45:55,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 326 [2024-11-18 23:45:55,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:55,397 INFO L225 Difference]: With dead ends: 1420 [2024-11-18 23:45:55,397 INFO L226 Difference]: Without dead ends: 878 [2024-11-18 23:45:55,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:45:55,398 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 342 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:55,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 720 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:45:55,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2024-11-18 23:45:55,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 856. [2024-11-18 23:45:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 755 states have (on average 1.471523178807947) internal successors, (1111), 755 states have internal predecessors, (1111), 94 states have call successors, (94), 6 states have call predecessors, (94), 6 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2024-11-18 23:45:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1299 transitions. [2024-11-18 23:45:55,448 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1299 transitions. Word has length 326 [2024-11-18 23:45:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:55,449 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1299 transitions. [2024-11-18 23:45:55,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1299 transitions. [2024-11-18 23:45:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-18 23:45:55,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:55,452 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:55,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:45:55,452 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:55,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:55,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2058937417, now seen corresponding path program 1 times [2024-11-18 23:45:55,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:55,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132632312] [2024-11-18 23:45:55,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:55,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:45:55,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:55,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132632312] [2024-11-18 23:45:55,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132632312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:55,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:55,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:45:55,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596959555] [2024-11-18 23:45:55,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:55,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:45:55,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:55,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:45:55,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:45:55,838 INFO L87 Difference]: Start difference. First operand 856 states and 1299 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:56,051 INFO L93 Difference]: Finished difference Result 2753 states and 4176 transitions. [2024-11-18 23:45:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:45:56,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 326 [2024-11-18 23:45:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:56,057 INFO L225 Difference]: With dead ends: 2753 [2024-11-18 23:45:56,057 INFO L226 Difference]: Without dead ends: 1900 [2024-11-18 23:45:56,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:45:56,059 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 475 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:56,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1250 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:45:56,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2024-11-18 23:45:56,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1762. [2024-11-18 23:45:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1611 states have (on average 1.489137181874612) internal successors, (2399), 1611 states have internal predecessors, (2399), 141 states have call successors, (141), 9 states have call predecessors, (141), 9 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-18 23:45:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2681 transitions. [2024-11-18 23:45:56,115 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2681 transitions. Word has length 326 [2024-11-18 23:45:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:56,116 INFO L471 AbstractCegarLoop]: Abstraction has 1762 states and 2681 transitions. [2024-11-18 23:45:56,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:56,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2681 transitions. [2024-11-18 23:45:56,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-18 23:45:56,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:56,120 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:56,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:45:56,121 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:56,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:56,121 INFO L85 PathProgramCache]: Analyzing trace with hash -230259895, now seen corresponding path program 1 times [2024-11-18 23:45:56,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:56,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212323870] [2024-11-18 23:45:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:56,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:45:56,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:56,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212323870] [2024-11-18 23:45:56,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212323870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:56,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:56,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:45:56,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727215086] [2024-11-18 23:45:56,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:56,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:45:56,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:56,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:45:56,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:45:56,537 INFO L87 Difference]: Start difference. First operand 1762 states and 2681 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:56,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:56,790 INFO L93 Difference]: Finished difference Result 4484 states and 6802 transitions. [2024-11-18 23:45:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:45:56,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 326 [2024-11-18 23:45:56,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:56,799 INFO L225 Difference]: With dead ends: 4484 [2024-11-18 23:45:56,799 INFO L226 Difference]: Without dead ends: 2725 [2024-11-18 23:45:56,802 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 23:45:56,802 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 250 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:56,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1034 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:45:56,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2024-11-18 23:45:56,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 1931. [2024-11-18 23:45:56,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1730 states have (on average 1.4757225433526011) internal successors, (2553), 1730 states have internal predecessors, (2553), 188 states have call successors, (188), 12 states have call predecessors, (188), 12 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-18 23:45:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2929 transitions. [2024-11-18 23:45:56,870 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2929 transitions. Word has length 326 [2024-11-18 23:45:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:56,870 INFO L471 AbstractCegarLoop]: Abstraction has 1931 states and 2929 transitions. [2024-11-18 23:45:56,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2929 transitions. [2024-11-18 23:45:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-18 23:45:56,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:56,874 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:56,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 23:45:56,874 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:56,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:56,875 INFO L85 PathProgramCache]: Analyzing trace with hash 663226443, now seen corresponding path program 1 times [2024-11-18 23:45:56,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:56,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866556726] [2024-11-18 23:45:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:56,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:45:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:45:57,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:45:57,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866556726] [2024-11-18 23:45:57,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866556726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:45:57,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:45:57,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:45:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358144278] [2024-11-18 23:45:57,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:45:57,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:45:57,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:45:57,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:45:57,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:45:57,472 INFO L87 Difference]: Start difference. First operand 1931 states and 2929 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:57,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:45:57,666 INFO L93 Difference]: Finished difference Result 4370 states and 6585 transitions. [2024-11-18 23:45:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:45:57,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 326 [2024-11-18 23:45:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:45:57,675 INFO L225 Difference]: With dead ends: 4370 [2024-11-18 23:45:57,675 INFO L226 Difference]: Without dead ends: 2611 [2024-11-18 23:45:57,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:45:57,679 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 802 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:45:57,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1138 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:45:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2024-11-18 23:45:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 1926. [2024-11-18 23:45:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1926 states, 1725 states have (on average 1.4655072463768115) internal successors, (2528), 1725 states have internal predecessors, (2528), 188 states have call successors, (188), 12 states have call predecessors, (188), 12 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-18 23:45:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 2904 transitions. [2024-11-18 23:45:57,793 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 2904 transitions. Word has length 326 [2024-11-18 23:45:57,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:45:57,793 INFO L471 AbstractCegarLoop]: Abstraction has 1926 states and 2904 transitions. [2024-11-18 23:45:57,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:45:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 2904 transitions. [2024-11-18 23:45:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-11-18 23:45:57,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:45:57,797 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:45:57,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 23:45:57,797 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:45:57,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:45:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1921120002, now seen corresponding path program 1 times [2024-11-18 23:45:57,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:45:57,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034014815] [2024-11-18 23:45:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:45:57,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:45:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:02,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:02,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034014815] [2024-11-18 23:46:02,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034014815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:02,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:02,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:46:02,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299226087] [2024-11-18 23:46:02,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:02,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:46:02,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:02,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:46:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:46:02,888 INFO L87 Difference]: Start difference. First operand 1926 states and 2904 transitions. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:04,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:04,844 INFO L93 Difference]: Finished difference Result 6110 states and 9124 transitions. [2024-11-18 23:46:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 23:46:04,845 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 326 [2024-11-18 23:46:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:04,857 INFO L225 Difference]: With dead ends: 6110 [2024-11-18 23:46:04,857 INFO L226 Difference]: Without dead ends: 4356 [2024-11-18 23:46:04,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:46:04,860 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 2165 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2165 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:04,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2165 Valid, 2813 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 23:46:04,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2024-11-18 23:46:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 2387. [2024-11-18 23:46:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2084 states have (on average 1.4414587332053743) internal successors, (3004), 2084 states have internal predecessors, (3004), 282 states have call successors, (282), 20 states have call predecessors, (282), 20 states have return successors, (282), 282 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-18 23:46:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 3568 transitions. [2024-11-18 23:46:04,947 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 3568 transitions. Word has length 326 [2024-11-18 23:46:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:04,948 INFO L471 AbstractCegarLoop]: Abstraction has 2387 states and 3568 transitions. [2024-11-18 23:46:04,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 3568 transitions. [2024-11-18 23:46:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-18 23:46:04,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:04,951 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:04,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 23:46:04,951 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:04,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1047732300, now seen corresponding path program 1 times [2024-11-18 23:46:04,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:04,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542292460] [2024-11-18 23:46:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:04,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:05,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:05,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542292460] [2024-11-18 23:46:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542292460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:05,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:46:05,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157754468] [2024-11-18 23:46:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:05,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:46:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:46:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:46:05,687 INFO L87 Difference]: Start difference. First operand 2387 states and 3568 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-18 23:46:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:05,998 INFO L93 Difference]: Finished difference Result 5053 states and 7563 transitions. [2024-11-18 23:46:05,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:46:05,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) Word has length 327 [2024-11-18 23:46:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:06,010 INFO L225 Difference]: With dead ends: 5053 [2024-11-18 23:46:06,010 INFO L226 Difference]: Without dead ends: 3269 [2024-11-18 23:46:06,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-18 23:46:06,014 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 305 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:06,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1682 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:46:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2024-11-18 23:46:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2702. [2024-11-18 23:46:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2399 states have (on average 1.4568570237599) internal successors, (3495), 2399 states have internal predecessors, (3495), 282 states have call successors, (282), 20 states have call predecessors, (282), 20 states have return successors, (282), 282 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-18 23:46:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4059 transitions. [2024-11-18 23:46:06,093 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4059 transitions. Word has length 327 [2024-11-18 23:46:06,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:06,094 INFO L471 AbstractCegarLoop]: Abstraction has 2702 states and 4059 transitions. [2024-11-18 23:46:06,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-18 23:46:06,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4059 transitions. [2024-11-18 23:46:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-18 23:46:06,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:06,096 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:06,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 23:46:06,097 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:06,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1900237667, now seen corresponding path program 1 times [2024-11-18 23:46:06,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:06,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081494531] [2024-11-18 23:46:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:06,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:06,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:06,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081494531] [2024-11-18 23:46:06,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081494531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:06,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:06,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:46:06,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741907297] [2024-11-18 23:46:06,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:06,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:46:06,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:06,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:46:06,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:46:06,445 INFO L87 Difference]: Start difference. First operand 2702 states and 4059 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:06,576 INFO L93 Difference]: Finished difference Result 5219 states and 7843 transitions. [2024-11-18 23:46:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:46:06,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 327 [2024-11-18 23:46:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:06,586 INFO L225 Difference]: With dead ends: 5219 [2024-11-18 23:46:06,586 INFO L226 Difference]: Without dead ends: 3356 [2024-11-18 23:46:06,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:46:06,589 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 362 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:06,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1145 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 23:46:06,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2024-11-18 23:46:06,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 2733. [2024-11-18 23:46:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2430 states have (on average 1.4592592592592593) internal successors, (3546), 2430 states have internal predecessors, (3546), 282 states have call successors, (282), 20 states have call predecessors, (282), 20 states have return successors, (282), 282 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-18 23:46:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4110 transitions. [2024-11-18 23:46:06,730 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4110 transitions. Word has length 327 [2024-11-18 23:46:06,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:06,730 INFO L471 AbstractCegarLoop]: Abstraction has 2733 states and 4110 transitions. [2024-11-18 23:46:06,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:06,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4110 transitions. [2024-11-18 23:46:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-18 23:46:06,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:06,739 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:06,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 23:46:06,739 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:06,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash -495083239, now seen corresponding path program 1 times [2024-11-18 23:46:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:06,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952769750] [2024-11-18 23:46:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:06,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:11,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:11,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952769750] [2024-11-18 23:46:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952769750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:11,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:11,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:46:11,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468586984] [2024-11-18 23:46:11,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:11,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:46:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:11,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:46:11,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:46:11,115 INFO L87 Difference]: Start difference. First operand 2733 states and 4110 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:13,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:13,660 INFO L93 Difference]: Finished difference Result 5675 states and 8454 transitions. [2024-11-18 23:46:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 23:46:13,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 327 [2024-11-18 23:46:13,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:13,683 INFO L225 Difference]: With dead ends: 5675 [2024-11-18 23:46:13,686 INFO L226 Difference]: Without dead ends: 3911 [2024-11-18 23:46:13,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2024-11-18 23:46:13,692 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 1242 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:13,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 2194 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 23:46:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2024-11-18 23:46:13,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 2963. [2024-11-18 23:46:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2660 states have (on average 1.469548872180451) internal successors, (3909), 2660 states have internal predecessors, (3909), 282 states have call successors, (282), 20 states have call predecessors, (282), 20 states have return successors, (282), 282 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-18 23:46:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4473 transitions. [2024-11-18 23:46:13,802 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4473 transitions. Word has length 327 [2024-11-18 23:46:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:13,803 INFO L471 AbstractCegarLoop]: Abstraction has 2963 states and 4473 transitions. [2024-11-18 23:46:13,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4473 transitions. [2024-11-18 23:46:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-18 23:46:13,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:13,811 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:13,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 23:46:13,811 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:13,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1562539691, now seen corresponding path program 1 times [2024-11-18 23:46:13,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:13,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396014167] [2024-11-18 23:46:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:14,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:14,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396014167] [2024-11-18 23:46:14,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396014167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:14,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:14,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-18 23:46:14,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931435439] [2024-11-18 23:46:14,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:14,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 23:46:14,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:14,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 23:46:14,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:46:14,893 INFO L87 Difference]: Start difference. First operand 2963 states and 4473 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 2 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-18 23:46:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:15,855 INFO L93 Difference]: Finished difference Result 8071 states and 11966 transitions. [2024-11-18 23:46:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 23:46:15,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 2 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 328 [2024-11-18 23:46:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:15,867 INFO L225 Difference]: With dead ends: 8071 [2024-11-18 23:46:15,868 INFO L226 Difference]: Without dead ends: 5641 [2024-11-18 23:46:15,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-18 23:46:15,872 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 1972 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1972 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:15,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1972 Valid, 2194 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:46:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2024-11-18 23:46:15,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 5200. [2024-11-18 23:46:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 4820 states have (on average 1.454564315352697) internal successors, (7011), 4828 states have internal predecessors, (7011), 338 states have call successors, (338), 41 states have call predecessors, (338), 41 states have return successors, (338), 330 states have call predecessors, (338), 338 states have call successors, (338) [2024-11-18 23:46:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 7687 transitions. [2024-11-18 23:46:16,007 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 7687 transitions. Word has length 328 [2024-11-18 23:46:16,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:16,008 INFO L471 AbstractCegarLoop]: Abstraction has 5200 states and 7687 transitions. [2024-11-18 23:46:16,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 2 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-18 23:46:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 7687 transitions. [2024-11-18 23:46:16,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-18 23:46:16,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:16,014 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:16,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 23:46:16,015 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:16,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash -669053353, now seen corresponding path program 1 times [2024-11-18 23:46:16,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:16,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143182205] [2024-11-18 23:46:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:16,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:17,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:17,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143182205] [2024-11-18 23:46:17,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143182205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:17,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:17,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 23:46:17,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959173897] [2024-11-18 23:46:17,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:17,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 23:46:17,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:17,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 23:46:17,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:46:17,318 INFO L87 Difference]: Start difference. First operand 5200 states and 7687 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 3 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2024-11-18 23:46:20,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:20,137 INFO L93 Difference]: Finished difference Result 11250 states and 16615 transitions. [2024-11-18 23:46:20,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-18 23:46:20,138 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 3 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 328 [2024-11-18 23:46:20,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:20,155 INFO L225 Difference]: With dead ends: 11250 [2024-11-18 23:46:20,156 INFO L226 Difference]: Without dead ends: 9084 [2024-11-18 23:46:20,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2024-11-18 23:46:20,163 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 2177 mSDsluCounter, 4430 mSDsCounter, 0 mSdLazyCounter, 2977 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2177 SdHoareTripleChecker+Valid, 4991 SdHoareTripleChecker+Invalid, 3250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 2977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:20,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2177 Valid, 4991 Invalid, 3250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 2977 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 23:46:20,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9084 states. [2024-11-18 23:46:20,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9084 to 6210. [2024-11-18 23:46:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6210 states, 5810 states have (on average 1.4609294320137693) internal successors, (8488), 5821 states have internal predecessors, (8488), 350 states have call successors, (350), 49 states have call predecessors, (350), 49 states have return successors, (350), 339 states have call predecessors, (350), 350 states have call successors, (350) [2024-11-18 23:46:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 9188 transitions. [2024-11-18 23:46:20,414 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 9188 transitions. Word has length 328 [2024-11-18 23:46:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:20,414 INFO L471 AbstractCegarLoop]: Abstraction has 6210 states and 9188 transitions. [2024-11-18 23:46:20,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 3 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2024-11-18 23:46:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 9188 transitions. [2024-11-18 23:46:20,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-18 23:46:20,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:20,423 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:20,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 23:46:20,424 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:20,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1150133611, now seen corresponding path program 1 times [2024-11-18 23:46:20,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:20,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184724087] [2024-11-18 23:46:20,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:20,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:24,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184724087] [2024-11-18 23:46:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184724087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:24,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:24,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:46:24,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596314597] [2024-11-18 23:46:24,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:24,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:46:24,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:24,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:46:24,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:46:24,379 INFO L87 Difference]: Start difference. First operand 6210 states and 9188 transitions. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:26,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:26,553 INFO L93 Difference]: Finished difference Result 11158 states and 16259 transitions. [2024-11-18 23:46:26,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 23:46:26,554 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 328 [2024-11-18 23:46:26,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:26,583 INFO L225 Difference]: With dead ends: 11158 [2024-11-18 23:46:26,584 INFO L226 Difference]: Without dead ends: 8431 [2024-11-18 23:46:26,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-18 23:46:26,592 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 1038 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 3263 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:26,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 3263 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-18 23:46:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2024-11-18 23:46:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 6360. [2024-11-18 23:46:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6360 states, 5960 states have (on average 1.4558724832214764) internal successors, (8677), 5971 states have internal predecessors, (8677), 350 states have call successors, (350), 49 states have call predecessors, (350), 49 states have return successors, (350), 339 states have call predecessors, (350), 350 states have call successors, (350) [2024-11-18 23:46:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 9377 transitions. [2024-11-18 23:46:26,917 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 9377 transitions. Word has length 328 [2024-11-18 23:46:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:26,918 INFO L471 AbstractCegarLoop]: Abstraction has 6360 states and 9377 transitions. [2024-11-18 23:46:26,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 9377 transitions. [2024-11-18 23:46:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-18 23:46:26,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:26,933 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:26,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 23:46:26,933 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:26,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:26,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1513307741, now seen corresponding path program 1 times [2024-11-18 23:46:26,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:26,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634048784] [2024-11-18 23:46:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:26,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:27,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634048784] [2024-11-18 23:46:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634048784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:27,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:27,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:46:27,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294819571] [2024-11-18 23:46:27,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:27,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:46:27,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:27,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:46:27,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:46:27,774 INFO L87 Difference]: Start difference. First operand 6360 states and 9377 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:28,281 INFO L93 Difference]: Finished difference Result 9649 states and 14151 transitions. [2024-11-18 23:46:28,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 23:46:28,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 328 [2024-11-18 23:46:28,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:28,332 INFO L225 Difference]: With dead ends: 9649 [2024-11-18 23:46:28,332 INFO L226 Difference]: Without dead ends: 7008 [2024-11-18 23:46:28,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:46:28,350 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 177 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:28,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1871 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 23:46:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2024-11-18 23:46:28,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 7001. [2024-11-18 23:46:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6566 states have (on average 1.443801401157478) internal successors, (9480), 6584 states have internal predecessors, (9480), 374 states have call successors, (374), 60 states have call predecessors, (374), 60 states have return successors, (374), 356 states have call predecessors, (374), 374 states have call successors, (374) [2024-11-18 23:46:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 10228 transitions. [2024-11-18 23:46:28,582 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 10228 transitions. Word has length 328 [2024-11-18 23:46:28,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:28,583 INFO L471 AbstractCegarLoop]: Abstraction has 7001 states and 10228 transitions. [2024-11-18 23:46:28,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 10228 transitions. [2024-11-18 23:46:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-18 23:46:28,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:28,590 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:28,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 23:46:28,591 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:28,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1820614868, now seen corresponding path program 1 times [2024-11-18 23:46:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:28,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662832898] [2024-11-18 23:46:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:28,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662832898] [2024-11-18 23:46:32,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662832898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:32,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:32,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-18 23:46:32,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539603121] [2024-11-18 23:46:32,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:32,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 23:46:32,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:32,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 23:46:32,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-18 23:46:32,790 INFO L87 Difference]: Start difference. First operand 7001 states and 10228 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:35,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:35,307 INFO L93 Difference]: Finished difference Result 10399 states and 15124 transitions. [2024-11-18 23:46:35,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:46:35,307 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 329 [2024-11-18 23:46:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:35,321 INFO L225 Difference]: With dead ends: 10399 [2024-11-18 23:46:35,321 INFO L226 Difference]: Without dead ends: 7594 [2024-11-18 23:46:35,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2024-11-18 23:46:35,328 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 949 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:35,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 2021 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 23:46:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2024-11-18 23:46:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 6623. [2024-11-18 23:46:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 6188 states have (on average 1.4355203619909502) internal successors, (8883), 6206 states have internal predecessors, (8883), 374 states have call successors, (374), 60 states have call predecessors, (374), 60 states have return successors, (374), 356 states have call predecessors, (374), 374 states have call successors, (374) [2024-11-18 23:46:35,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 9631 transitions. [2024-11-18 23:46:35,495 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 9631 transitions. Word has length 329 [2024-11-18 23:46:35,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:35,495 INFO L471 AbstractCegarLoop]: Abstraction has 6623 states and 9631 transitions. [2024-11-18 23:46:35,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:35,495 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 9631 transitions. [2024-11-18 23:46:35,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-18 23:46:35,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:35,501 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:35,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 23:46:35,501 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:35,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:35,502 INFO L85 PathProgramCache]: Analyzing trace with hash -562721309, now seen corresponding path program 1 times [2024-11-18 23:46:35,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:35,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356083875] [2024-11-18 23:46:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:39,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356083875] [2024-11-18 23:46:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356083875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 23:46:39,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888921520] [2024-11-18 23:46:39,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:39,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 23:46:39,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:39,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 23:46:39,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-18 23:46:39,907 INFO L87 Difference]: Start difference. First operand 6623 states and 9631 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 2 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-18 23:46:43,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:43,106 INFO L93 Difference]: Finished difference Result 13204 states and 19111 transitions. [2024-11-18 23:46:43,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 23:46:43,107 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 2 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 329 [2024-11-18 23:46:43,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:43,131 INFO L225 Difference]: With dead ends: 13204 [2024-11-18 23:46:43,131 INFO L226 Difference]: Without dead ends: 9991 [2024-11-18 23:46:43,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-18 23:46:43,142 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 1241 mSDsluCounter, 2411 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:43,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 2893 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-18 23:46:43,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9991 states. [2024-11-18 23:46:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9991 to 7917. [2024-11-18 23:46:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7917 states, 7269 states have (on average 1.4143623607098639) internal successors, (10281), 7293 states have internal predecessors, (10281), 557 states have call successors, (557), 90 states have call predecessors, (557), 90 states have return successors, (557), 533 states have call predecessors, (557), 557 states have call successors, (557) [2024-11-18 23:46:43,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7917 states to 7917 states and 11395 transitions. [2024-11-18 23:46:43,444 INFO L78 Accepts]: Start accepts. Automaton has 7917 states and 11395 transitions. Word has length 329 [2024-11-18 23:46:43,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:43,444 INFO L471 AbstractCegarLoop]: Abstraction has 7917 states and 11395 transitions. [2024-11-18 23:46:43,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 2 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-18 23:46:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 7917 states and 11395 transitions. [2024-11-18 23:46:43,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 23:46:43,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:43,451 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:43,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 23:46:43,451 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:43,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:43,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1152733767, now seen corresponding path program 1 times [2024-11-18 23:46:43,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:43,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192971839] [2024-11-18 23:46:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:43,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:46:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:46:50,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:46:50,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192971839] [2024-11-18 23:46:50,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192971839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:46:50,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:46:50,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 23:46:50,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94726645] [2024-11-18 23:46:50,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:46:50,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:46:50,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:46:50,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:46:50,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:46:50,963 INFO L87 Difference]: Start difference. First operand 7917 states and 11395 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:46:53,442 INFO L93 Difference]: Finished difference Result 17843 states and 25693 transitions. [2024-11-18 23:46:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 23:46:53,443 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 332 [2024-11-18 23:46:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:46:53,463 INFO L225 Difference]: With dead ends: 17843 [2024-11-18 23:46:53,467 INFO L226 Difference]: Without dead ends: 13847 [2024-11-18 23:46:53,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:46:53,488 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 414 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:46:53,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 3905 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 23:46:53,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13847 states. [2024-11-18 23:46:53,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13847 to 11239. [2024-11-18 23:46:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11239 states, 10573 states have (on average 1.424950345218954) internal successors, (15066), 10603 states have internal predecessors, (15066), 569 states have call successors, (569), 96 states have call predecessors, (569), 96 states have return successors, (569), 539 states have call predecessors, (569), 569 states have call successors, (569) [2024-11-18 23:46:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11239 states to 11239 states and 16204 transitions. [2024-11-18 23:46:53,812 INFO L78 Accepts]: Start accepts. Automaton has 11239 states and 16204 transitions. Word has length 332 [2024-11-18 23:46:53,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:46:53,813 INFO L471 AbstractCegarLoop]: Abstraction has 11239 states and 16204 transitions. [2024-11-18 23:46:53,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:46:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 11239 states and 16204 transitions. [2024-11-18 23:46:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-11-18 23:46:53,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:46:53,824 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:46:53,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 23:46:53,824 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:46:53,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:46:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1603893499, now seen corresponding path program 1 times [2024-11-18 23:46:53,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:46:53,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129710702] [2024-11-18 23:46:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:46:53,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:46:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:47:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-18 23:47:04,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:47:04,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129710702] [2024-11-18 23:47:04,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129710702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:47:04,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:47:04,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-18 23:47:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144096376] [2024-11-18 23:47:04,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:47:04,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:47:04,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:47:04,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:47:04,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:47:04,582 INFO L87 Difference]: Start difference. First operand 11239 states and 16204 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:47:08,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:47:08,945 INFO L93 Difference]: Finished difference Result 25214 states and 36289 transitions. [2024-11-18 23:47:08,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 23:47:08,946 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 332 [2024-11-18 23:47:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:47:08,969 INFO L225 Difference]: With dead ends: 25214 [2024-11-18 23:47:08,969 INFO L226 Difference]: Without dead ends: 18977 [2024-11-18 23:47:08,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-18 23:47:08,981 INFO L432 NwaCegarLoop]: 638 mSDtfsCounter, 653 mSDsluCounter, 3998 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 4636 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:47:08,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 4636 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-18 23:47:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18977 states. [2024-11-18 23:47:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18977 to 12253. [2024-11-18 23:47:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12253 states, 11587 states have (on average 1.4300509191335118) internal successors, (16570), 11617 states have internal predecessors, (16570), 569 states have call successors, (569), 96 states have call predecessors, (569), 96 states have return successors, (569), 539 states have call predecessors, (569), 569 states have call successors, (569) [2024-11-18 23:47:09,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 17708 transitions. [2024-11-18 23:47:09,434 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 17708 transitions. Word has length 332 [2024-11-18 23:47:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:47:09,434 INFO L471 AbstractCegarLoop]: Abstraction has 12253 states and 17708 transitions. [2024-11-18 23:47:09,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-18 23:47:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 17708 transitions. [2024-11-18 23:47:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-18 23:47:09,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:47:09,444 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 23:47:09,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 23:47:09,444 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:47:09,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:47:09,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2032297067, now seen corresponding path program 1 times [2024-11-18 23:47:09,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:47:09,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914265958] [2024-11-18 23:47:09,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:47:09,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:47:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat