./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-71.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-71.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 043b41ee1fabb1e5ed7ee3566b548a40fae9dd3d7487c6064ec51d57b94981a7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:20:54,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:20:54,731 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:20:54,736 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:20:54,737 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:20:54,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:20:54,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:20:54,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:20:54,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:20:54,763 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:20:54,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:20:54,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:20:54,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:20:54,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:20:54,766 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:20:54,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:20:54,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:20:54,767 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:20:54,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:20:54,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:20:54,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:20:54,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:20:54,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:20:54,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:20:54,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:20:54,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:20:54,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:20:54,771 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:20:54,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:20:54,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:20:54,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:20:54,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:20:54,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:20:54,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:20:54,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:20:54,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:20:54,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:20:54,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:20:54,772 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:20:54,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:20:54,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:20:54,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:20:54,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 043b41ee1fabb1e5ed7ee3566b548a40fae9dd3d7487c6064ec51d57b94981a7 [2024-11-22 13:20:54,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:20:54,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:20:54,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:20:54,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:20:54,979 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:20:54,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-71.i [2024-11-22 13:20:56,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:20:56,388 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:20:56,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-71.i [2024-11-22 13:20:56,399 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27db1f827/b57968c903ac4612a2d8cb636c28be05/FLAG5014b85f9 [2024-11-22 13:20:56,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27db1f827/b57968c903ac4612a2d8cb636c28be05 [2024-11-22 13:20:56,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:20:56,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:20:56,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:20:56,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:20:56,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:20:56,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28445471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56, skipping insertion in model container [2024-11-22 13:20:56,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,452 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:20:56,596 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_variablewrapping_wrapper-sp_file-71.i[917,930] [2024-11-22 13:20:56,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:20:56,675 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:20:56,684 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_variablewrapping_wrapper-sp_file-71.i[917,930] [2024-11-22 13:20:56,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:20:56,760 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:20:56,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56 WrapperNode [2024-11-22 13:20:56,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:20:56,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:20:56,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:20:56,763 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:20:56,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,832 INFO L138 Inliner]: procedures = 27, calls = 169, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 502 [2024-11-22 13:20:56,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:20:56,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:20:56,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:20:56,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:20:56,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,870 INFO L175 MemorySlicer]: Split 139 memory accesses to 2 slices as follows [2, 137]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 33 writes are split as follows [0, 33]. [2024-11-22 13:20:56,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:20:56,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:20:56,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:20:56,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:20:56,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (1/1) ... [2024-11-22 13:20:56,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:20:56,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:20:56,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:20:56,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:20:57,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:20:57,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-22 13:20:57,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-22 13:20:57,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:20:57,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:20:57,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:20:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:20:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 13:20:57,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 13:20:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:20:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:20:57,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:20:57,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:20:57,115 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:20:57,116 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:20:57,446 INFO L? ?]: Removed 126 outVars from TransFormulas that were not future-live. [2024-11-22 13:20:57,446 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:20:57,456 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:20:57,456 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 13:20:57,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:57 BoogieIcfgContainer [2024-11-22 13:20:57,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:20:57,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:20:57,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:20:57,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:20:57,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:20:56" (1/3) ... [2024-11-22 13:20:57,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f97bdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:57, skipping insertion in model container [2024-11-22 13:20:57,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:56" (2/3) ... [2024-11-22 13:20:57,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f97bdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:57, skipping insertion in model container [2024-11-22 13:20:57,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:57" (3/3) ... [2024-11-22 13:20:57,462 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-71.i [2024-11-22 13:20:57,474 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:20:57,474 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:20:57,520 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:20:57,524 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;@6d990fda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:20:57,525 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 13:20:57,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 83 states have (on average 1.3855421686746987) internal successors, (115), 84 states have internal predecessors, (115), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 13:20:57,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 13:20:57,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:20:57,539 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:20:57,539 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:20:57,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:20:57,543 INFO L85 PathProgramCache]: Analyzing trace with hash -312506901, now seen corresponding path program 1 times [2024-11-22 13:20:57,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:20:57,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204650107] [2024-11-22 13:20:57,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:20:57,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:20:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:20:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-22 13:20:57,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:20:57,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204650107] [2024-11-22 13:20:57,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204650107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:20:57,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005806520] [2024-11-22 13:20:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:20:57,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:20:57,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:20:57,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:20:57,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:20:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:20:58,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 13:20:58,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:20:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-22 13:20:58,117 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:20:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005806520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:20:58,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:20:58,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 13:20:58,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488101347] [2024-11-22 13:20:58,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:20:58,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 13:20:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:20:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 13:20:58,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:20:58,150 INFO L87 Difference]: Start difference. First operand has 105 states, 83 states have (on average 1.3855421686746987) internal successors, (115), 84 states have internal predecessors, (115), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:20:58,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:20:58,181 INFO L93 Difference]: Finished difference Result 203 states and 319 transitions. [2024-11-22 13:20:58,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 13:20:58,183 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 144 [2024-11-22 13:20:58,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:20:58,189 INFO L225 Difference]: With dead ends: 203 [2024-11-22 13:20:58,189 INFO L226 Difference]: Without dead ends: 101 [2024-11-22 13:20:58,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:20:58,194 INFO L432 NwaCegarLoop]: 144 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, 144 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:20:58,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:20:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-22 13:20:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-22 13:20:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 80 states have (on average 1.325) internal successors, (106), 80 states have internal predecessors, (106), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 13:20:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 144 transitions. [2024-11-22 13:20:58,261 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 144 transitions. Word has length 144 [2024-11-22 13:20:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:20:58,261 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 144 transitions. [2024-11-22 13:20:58,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:20:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 144 transitions. [2024-11-22 13:20:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 13:20:58,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:20:58,265 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:20:58,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:20:58,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 13:20:58,472 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:20:58,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:20:58,473 INFO L85 PathProgramCache]: Analyzing trace with hash 693008529, now seen corresponding path program 1 times [2024-11-22 13:20:58,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:20:58,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693356008] [2024-11-22 13:20:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:20:58,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:20:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:20:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:20:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:20:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693356008] [2024-11-22 13:20:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693356008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:20:58,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:20:58,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:20:58,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487695262] [2024-11-22 13:20:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:20:58,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:20:58,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:20:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:20:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:20:58,763 INFO L87 Difference]: Start difference. First operand 101 states and 144 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:20:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:20:58,795 INFO L93 Difference]: Finished difference Result 202 states and 289 transitions. [2024-11-22 13:20:58,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:20:58,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 144 [2024-11-22 13:20:58,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:20:58,800 INFO L225 Difference]: With dead ends: 202 [2024-11-22 13:20:58,803 INFO L226 Difference]: Without dead ends: 104 [2024-11-22 13:20:58,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:20:58,804 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 1 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:20:58,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 412 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:20:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-22 13:20:58,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2024-11-22 13:20:58,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.3170731707317074) internal successors, (108), 82 states have internal predecessors, (108), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 13:20:58,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 146 transitions. [2024-11-22 13:20:58,826 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 146 transitions. Word has length 144 [2024-11-22 13:20:58,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:20:58,827 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 146 transitions. [2024-11-22 13:20:58,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:20:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 146 transitions. [2024-11-22 13:20:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 13:20:58,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:20:58,832 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:20:58,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:20:58,832 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:20:58,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:20:58,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1826951405, now seen corresponding path program 1 times [2024-11-22 13:20:58,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:20:58,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273510080] [2024-11-22 13:20:58,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:20:58,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:20:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:20:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:20:58,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:20:58,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273510080] [2024-11-22 13:20:58,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273510080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:20:58,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:20:58,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:20:58,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466765184] [2024-11-22 13:20:58,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:20:58,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:20:58,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:20:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:20:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:20:58,955 INFO L87 Difference]: Start difference. First operand 103 states and 146 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:20:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:20:58,974 INFO L93 Difference]: Finished difference Result 206 states and 293 transitions. [2024-11-22 13:20:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:20:58,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 144 [2024-11-22 13:20:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:20:58,976 INFO L225 Difference]: With dead ends: 206 [2024-11-22 13:20:58,976 INFO L226 Difference]: Without dead ends: 106 [2024-11-22 13:20:58,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:20:58,978 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 1 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:20:58,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 415 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:20:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-22 13:20:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2024-11-22 13:20:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 84 states have internal predecessors, (110), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 13:20:58,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2024-11-22 13:20:58,985 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 148 transitions. Word has length 144 [2024-11-22 13:20:58,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:20:58,985 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 148 transitions. [2024-11-22 13:20:58,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:20:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 148 transitions. [2024-11-22 13:20:58,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 13:20:58,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:20:58,987 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:20:58,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:20:58,987 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:20:58,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:20:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1825104363, now seen corresponding path program 1 times [2024-11-22 13:20:58,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:20:58,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670361749] [2024-11-22 13:20:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:20:58,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:20:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:00,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:00,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670361749] [2024-11-22 13:21:00,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670361749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:00,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:00,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:21:00,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920182079] [2024-11-22 13:21:00,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:00,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:21:00,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:21:00,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:21:00,169 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:00,607 INFO L93 Difference]: Finished difference Result 241 states and 338 transitions. [2024-11-22 13:21:00,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:21:00,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 144 [2024-11-22 13:21:00,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:00,609 INFO L225 Difference]: With dead ends: 241 [2024-11-22 13:21:00,609 INFO L226 Difference]: Without dead ends: 139 [2024-11-22 13:21:00,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:21:00,610 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 138 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:00,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 309 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 13:21:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-22 13:21:00,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 132. [2024-11-22 13:21:00,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 100 states have (on average 1.26) internal successors, (126), 101 states have internal predecessors, (126), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-22 13:21:00,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 184 transitions. [2024-11-22 13:21:00,635 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 184 transitions. Word has length 144 [2024-11-22 13:21:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:00,637 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 184 transitions. [2024-11-22 13:21:00,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:00,637 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 184 transitions. [2024-11-22 13:21:00,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-22 13:21:00,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:00,641 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:00,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:21:00,642 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:00,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:00,642 INFO L85 PathProgramCache]: Analyzing trace with hash -872708680, now seen corresponding path program 1 times [2024-11-22 13:21:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:00,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994571353] [2024-11-22 13:21:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:00,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:01,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:01,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994571353] [2024-11-22 13:21:01,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994571353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:01,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:01,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:21:01,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908244675] [2024-11-22 13:21:01,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:01,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:21:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:01,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:21:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:21:01,362 INFO L87 Difference]: Start difference. First operand 132 states and 184 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:21:01,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:01,758 INFO L93 Difference]: Finished difference Result 283 states and 397 transitions. [2024-11-22 13:21:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:21:01,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2024-11-22 13:21:01,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:01,762 INFO L225 Difference]: With dead ends: 283 [2024-11-22 13:21:01,764 INFO L226 Difference]: Without dead ends: 179 [2024-11-22 13:21:01,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:21:01,765 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 339 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:01,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 332 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 13:21:01,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-22 13:21:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 140. [2024-11-22 13:21:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 108 states have (on average 1.287037037037037) internal successors, (139), 109 states have internal predecessors, (139), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-22 13:21:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 197 transitions. [2024-11-22 13:21:01,786 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 197 transitions. Word has length 145 [2024-11-22 13:21:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:01,786 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 197 transitions. [2024-11-22 13:21:01,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:21:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 197 transitions. [2024-11-22 13:21:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 13:21:01,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:01,788 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:01,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:21:01,788 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:01,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:01,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1111641874, now seen corresponding path program 1 times [2024-11-22 13:21:01,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:01,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70475336] [2024-11-22 13:21:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:01,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:03,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:03,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70475336] [2024-11-22 13:21:03,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70475336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:03,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:03,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:21:03,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097998049] [2024-11-22 13:21:03,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:03,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:21:03,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:03,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:21:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:21:03,801 INFO L87 Difference]: Start difference. First operand 140 states and 197 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:04,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:04,451 INFO L93 Difference]: Finished difference Result 304 states and 428 transitions. [2024-11-22 13:21:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:21:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 146 [2024-11-22 13:21:04,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:04,453 INFO L225 Difference]: With dead ends: 304 [2024-11-22 13:21:04,453 INFO L226 Difference]: Without dead ends: 192 [2024-11-22 13:21:04,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:21:04,454 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 294 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:04,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 576 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 13:21:04,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-22 13:21:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 153. [2024-11-22 13:21:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 121 states have (on average 1.3057851239669422) internal successors, (158), 122 states have internal predecessors, (158), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-22 13:21:04,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 216 transitions. [2024-11-22 13:21:04,482 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 216 transitions. Word has length 146 [2024-11-22 13:21:04,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:04,483 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 216 transitions. [2024-11-22 13:21:04,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 12 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 216 transitions. [2024-11-22 13:21:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 13:21:04,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:04,485 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:04,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:21:04,485 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:04,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:04,485 INFO L85 PathProgramCache]: Analyzing trace with hash 704073845, now seen corresponding path program 1 times [2024-11-22 13:21:04,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:04,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266493827] [2024-11-22 13:21:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:06,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:06,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266493827] [2024-11-22 13:21:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266493827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:06,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:06,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 13:21:06,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787165284] [2024-11-22 13:21:06,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:06,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:21:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:21:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:21:06,259 INFO L87 Difference]: Start difference. First operand 153 states and 216 transitions. Second operand has 13 states, 12 states have (on average 4.5) internal successors, (54), 13 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:07,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:07,276 INFO L93 Difference]: Finished difference Result 360 states and 508 transitions. [2024-11-22 13:21:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:21:07,277 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 13 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 146 [2024-11-22 13:21:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:07,278 INFO L225 Difference]: With dead ends: 360 [2024-11-22 13:21:07,278 INFO L226 Difference]: Without dead ends: 235 [2024-11-22 13:21:07,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2024-11-22 13:21:07,280 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 485 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:07,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 431 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 13:21:07,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-22 13:21:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 188. [2024-11-22 13:21:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 156 states have (on average 1.3205128205128205) internal successors, (206), 157 states have internal predecessors, (206), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-22 13:21:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2024-11-22 13:21:07,306 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 146 [2024-11-22 13:21:07,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:07,306 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2024-11-22 13:21:07,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 13 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:07,307 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2024-11-22 13:21:07,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 13:21:07,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:07,308 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:07,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:21:07,308 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:07,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1492049167, now seen corresponding path program 1 times [2024-11-22 13:21:07,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:07,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923964159] [2024-11-22 13:21:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:07,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:08,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923964159] [2024-11-22 13:21:08,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923964159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:08,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:08,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:21:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943853834] [2024-11-22 13:21:08,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:08,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:21:08,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:08,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:21:08,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:21:08,073 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:21:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:08,401 INFO L93 Difference]: Finished difference Result 456 states and 639 transitions. [2024-11-22 13:21:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:21:08,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 146 [2024-11-22 13:21:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:08,403 INFO L225 Difference]: With dead ends: 456 [2024-11-22 13:21:08,403 INFO L226 Difference]: Without dead ends: 271 [2024-11-22 13:21:08,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:21:08,404 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 147 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:08,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 380 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 13:21:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-22 13:21:08,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 204. [2024-11-22 13:21:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 172 states have (on average 1.3255813953488371) internal successors, (228), 173 states have internal predecessors, (228), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-22 13:21:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 286 transitions. [2024-11-22 13:21:08,429 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 286 transitions. Word has length 146 [2024-11-22 13:21:08,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:08,429 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 286 transitions. [2024-11-22 13:21:08,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:21:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 286 transitions. [2024-11-22 13:21:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 13:21:08,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:08,430 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:08,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:21:08,433 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:08,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:08,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1887079423, now seen corresponding path program 1 times [2024-11-22 13:21:08,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:08,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005662212] [2024-11-22 13:21:08,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:08,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:10,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:10,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005662212] [2024-11-22 13:21:10,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005662212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:10,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:10,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 13:21:10,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384791630] [2024-11-22 13:21:10,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:10,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:21:10,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:10,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:21:10,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:21:10,782 INFO L87 Difference]: Start difference. First operand 204 states and 286 transitions. Second operand has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:11,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:11,504 INFO L93 Difference]: Finished difference Result 451 states and 631 transitions. [2024-11-22 13:21:11,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:21:11,504 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 147 [2024-11-22 13:21:11,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:11,506 INFO L225 Difference]: With dead ends: 451 [2024-11-22 13:21:11,506 INFO L226 Difference]: Without dead ends: 250 [2024-11-22 13:21:11,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2024-11-22 13:21:11,507 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 394 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:11,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 585 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:21:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-22 13:21:11,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 206. [2024-11-22 13:21:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 174 states have (on average 1.3275862068965518) internal successors, (231), 175 states have internal predecessors, (231), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-22 13:21:11,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2024-11-22 13:21:11,528 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 147 [2024-11-22 13:21:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:11,528 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2024-11-22 13:21:11,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2024-11-22 13:21:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 13:21:11,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:11,530 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:11,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:21:11,530 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:11,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash -687424559, now seen corresponding path program 1 times [2024-11-22 13:21:11,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:11,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490357192] [2024-11-22 13:21:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:11,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:13,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:13,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490357192] [2024-11-22 13:21:13,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490357192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:13,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:13,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 13:21:13,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919711971] [2024-11-22 13:21:13,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:13,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 13:21:13,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:13,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 13:21:13,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:21:13,118 INFO L87 Difference]: Start difference. First operand 206 states and 289 transitions. Second operand has 15 states, 13 states have (on average 4.230769230769231) internal successors, (55), 15 states have internal predecessors, (55), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:14,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:14,192 INFO L93 Difference]: Finished difference Result 486 states and 676 transitions. [2024-11-22 13:21:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:21:14,196 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.230769230769231) internal successors, (55), 15 states have internal predecessors, (55), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) Word has length 147 [2024-11-22 13:21:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:14,197 INFO L225 Difference]: With dead ends: 486 [2024-11-22 13:21:14,197 INFO L226 Difference]: Without dead ends: 283 [2024-11-22 13:21:14,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:21:14,198 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 364 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:14,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 564 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 13:21:14,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-22 13:21:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 278. [2024-11-22 13:21:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 228 states have (on average 1.293859649122807) internal successors, (295), 231 states have internal predecessors, (295), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 13:21:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 385 transitions. [2024-11-22 13:21:14,244 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 385 transitions. Word has length 147 [2024-11-22 13:21:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:14,244 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 385 transitions. [2024-11-22 13:21:14,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.230769230769231) internal successors, (55), 15 states have internal predecessors, (55), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 385 transitions. [2024-11-22 13:21:14,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 13:21:14,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:14,245 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:14,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:21:14,246 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:14,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:14,246 INFO L85 PathProgramCache]: Analyzing trace with hash 143568852, now seen corresponding path program 1 times [2024-11-22 13:21:14,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:14,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800163892] [2024-11-22 13:21:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:14,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:15,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800163892] [2024-11-22 13:21:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800163892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:15,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:15,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 13:21:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512614712] [2024-11-22 13:21:15,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:15,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:21:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:15,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:21:15,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:21:15,141 INFO L87 Difference]: Start difference. First operand 278 states and 385 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:21:15,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:15,739 INFO L93 Difference]: Finished difference Result 603 states and 834 transitions. [2024-11-22 13:21:15,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:21:15,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2024-11-22 13:21:15,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:15,744 INFO L225 Difference]: With dead ends: 603 [2024-11-22 13:21:15,744 INFO L226 Difference]: Without dead ends: 349 [2024-11-22 13:21:15,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:21:15,746 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 247 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:15,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 360 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:21:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-22 13:21:15,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 278. [2024-11-22 13:21:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 228 states have (on average 1.2894736842105263) internal successors, (294), 231 states have internal predecessors, (294), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 13:21:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 384 transitions. [2024-11-22 13:21:15,785 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 384 transitions. Word has length 147 [2024-11-22 13:21:15,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:15,785 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 384 transitions. [2024-11-22 13:21:15,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:21:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 384 transitions. [2024-11-22 13:21:15,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 13:21:15,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:15,787 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:15,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:21:15,787 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:15,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:15,787 INFO L85 PathProgramCache]: Analyzing trace with hash -838220110, now seen corresponding path program 1 times [2024-11-22 13:21:15,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:15,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123575130] [2024-11-22 13:21:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:15,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:17,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123575130] [2024-11-22 13:21:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123575130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 13:21:17,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125739141] [2024-11-22 13:21:17,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:17,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:21:17,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:21:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:21:17,426 INFO L87 Difference]: Start difference. First operand 278 states and 384 transitions. Second operand has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:18,224 INFO L93 Difference]: Finished difference Result 622 states and 856 transitions. [2024-11-22 13:21:18,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:21:18,225 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 147 [2024-11-22 13:21:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:18,226 INFO L225 Difference]: With dead ends: 622 [2024-11-22 13:21:18,226 INFO L226 Difference]: Without dead ends: 368 [2024-11-22 13:21:18,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2024-11-22 13:21:18,227 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 323 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:18,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 591 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:21:18,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-22 13:21:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 308. [2024-11-22 13:21:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 258 states have (on average 1.2945736434108528) internal successors, (334), 261 states have internal predecessors, (334), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-22 13:21:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 424 transitions. [2024-11-22 13:21:18,267 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 424 transitions. Word has length 147 [2024-11-22 13:21:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:18,267 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 424 transitions. [2024-11-22 13:21:18,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 424 transitions. [2024-11-22 13:21:18,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 13:21:18,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:18,268 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:18,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:21:18,269 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:18,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:18,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2118083788, now seen corresponding path program 1 times [2024-11-22 13:21:18,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:18,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62588423] [2024-11-22 13:21:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:18,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:22,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:22,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62588423] [2024-11-22 13:21:22,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62588423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:22,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:22,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 13:21:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652336785] [2024-11-22 13:21:22,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:22,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 13:21:22,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 13:21:22,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:21:22,082 INFO L87 Difference]: Start difference. First operand 308 states and 424 transitions. Second operand has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 15 states have internal predecessors, (55), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 13:21:23,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:23,684 INFO L93 Difference]: Finished difference Result 667 states and 908 transitions. [2024-11-22 13:21:23,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:21:23,685 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 15 states have internal predecessors, (55), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 5 states have call successors, (19) Word has length 147 [2024-11-22 13:21:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:23,687 INFO L225 Difference]: With dead ends: 667 [2024-11-22 13:21:23,687 INFO L226 Difference]: Without dead ends: 383 [2024-11-22 13:21:23,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-11-22 13:21:23,688 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 247 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:23,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 584 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 13:21:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-22 13:21:23,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 376. [2024-11-22 13:21:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 319 states have (on average 1.2821316614420062) internal successors, (409), 324 states have internal predecessors, (409), 49 states have call successors, (49), 7 states have call predecessors, (49), 7 states have return successors, (49), 44 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-22 13:21:23,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 507 transitions. [2024-11-22 13:21:23,742 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 507 transitions. Word has length 147 [2024-11-22 13:21:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:23,742 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 507 transitions. [2024-11-22 13:21:23,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 15 states have internal predecessors, (55), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 13:21:23,743 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 507 transitions. [2024-11-22 13:21:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 13:21:23,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:23,744 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:23,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 13:21:23,744 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:23,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash -697671500, now seen corresponding path program 1 times [2024-11-22 13:21:23,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:23,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388979856] [2024-11-22 13:21:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:23,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:27,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388979856] [2024-11-22 13:21:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388979856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:27,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:27,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 13:21:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230399591] [2024-11-22 13:21:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:27,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 13:21:27,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:27,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 13:21:27,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:21:27,246 INFO L87 Difference]: Start difference. First operand 376 states and 507 transitions. Second operand has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 15 states have internal predecessors, (55), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 13:21:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:28,756 INFO L93 Difference]: Finished difference Result 776 states and 1042 transitions. [2024-11-22 13:21:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:21:28,757 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 15 states have internal predecessors, (55), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 5 states have call successors, (19) Word has length 147 [2024-11-22 13:21:28,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:28,760 INFO L225 Difference]: With dead ends: 776 [2024-11-22 13:21:28,760 INFO L226 Difference]: Without dead ends: 428 [2024-11-22 13:21:28,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-11-22 13:21:28,761 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 248 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:28,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 515 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 13:21:28,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-22 13:21:28,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 357. [2024-11-22 13:21:28,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 302 states have (on average 1.2748344370860927) internal successors, (385), 306 states have internal predecessors, (385), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-22 13:21:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 479 transitions. [2024-11-22 13:21:28,814 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 479 transitions. Word has length 147 [2024-11-22 13:21:28,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:28,814 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 479 transitions. [2024-11-22 13:21:28,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 15 states have internal predecessors, (55), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 13:21:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 479 transitions. [2024-11-22 13:21:28,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-22 13:21:28,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:28,815 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:28,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 13:21:28,816 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:28,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1977535178, now seen corresponding path program 1 times [2024-11-22 13:21:28,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:28,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506552897] [2024-11-22 13:21:28,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:28,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:29,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506552897] [2024-11-22 13:21:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506552897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:29,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:29,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 13:21:29,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322632826] [2024-11-22 13:21:29,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:29,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:21:29,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:29,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:21:29,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:21:29,315 INFO L87 Difference]: Start difference. First operand 357 states and 479 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:21:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:29,701 INFO L93 Difference]: Finished difference Result 738 states and 991 transitions. [2024-11-22 13:21:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:21:29,701 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 147 [2024-11-22 13:21:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:29,703 INFO L225 Difference]: With dead ends: 738 [2024-11-22 13:21:29,703 INFO L226 Difference]: Without dead ends: 409 [2024-11-22 13:21:29,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:21:29,704 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 143 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:29,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 790 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 13:21:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-22 13:21:29,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 349. [2024-11-22 13:21:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 294 states have (on average 1.2755102040816326) internal successors, (375), 298 states have internal predecessors, (375), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-22 13:21:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 469 transitions. [2024-11-22 13:21:29,760 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 469 transitions. Word has length 147 [2024-11-22 13:21:29,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:29,762 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 469 transitions. [2024-11-22 13:21:29,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:21:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 469 transitions. [2024-11-22 13:21:29,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 13:21:29,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:29,763 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:29,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:21:29,763 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:29,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:29,764 INFO L85 PathProgramCache]: Analyzing trace with hash 697585728, now seen corresponding path program 1 times [2024-11-22 13:21:29,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:29,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074190008] [2024-11-22 13:21:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:29,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:29,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:29,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074190008] [2024-11-22 13:21:29,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074190008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:29,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:29,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:21:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482176856] [2024-11-22 13:21:29,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:29,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:21:29,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:21:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:21:29,918 INFO L87 Difference]: Start difference. First operand 349 states and 469 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:21:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:30,117 INFO L93 Difference]: Finished difference Result 700 states and 942 transitions. [2024-11-22 13:21:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:21:30,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2024-11-22 13:21:30,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:30,119 INFO L225 Difference]: With dead ends: 700 [2024-11-22 13:21:30,120 INFO L226 Difference]: Without dead ends: 379 [2024-11-22 13:21:30,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:21:30,121 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 32 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:30,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 453 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 13:21:30,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-22 13:21:30,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 353. [2024-11-22 13:21:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 298 states have (on average 1.2751677852348993) internal successors, (380), 302 states have internal predecessors, (380), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-22 13:21:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 474 transitions. [2024-11-22 13:21:30,181 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 474 transitions. Word has length 148 [2024-11-22 13:21:30,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:30,182 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 474 transitions. [2024-11-22 13:21:30,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:21:30,182 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 474 transitions. [2024-11-22 13:21:30,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 13:21:30,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:30,183 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:30,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 13:21:30,183 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:30,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:30,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1475214440, now seen corresponding path program 1 times [2024-11-22 13:21:30,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:30,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097664968] [2024-11-22 13:21:30,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:30,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:31,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097664968] [2024-11-22 13:21:31,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097664968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:31,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:31,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:21:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748747651] [2024-11-22 13:21:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:31,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:21:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:21:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:21:31,038 INFO L87 Difference]: Start difference. First operand 353 states and 474 transitions. Second operand has 11 states, 10 states have (on average 5.6) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:31,733 INFO L93 Difference]: Finished difference Result 746 states and 1001 transitions. [2024-11-22 13:21:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:21:31,734 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 148 [2024-11-22 13:21:31,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:31,736 INFO L225 Difference]: With dead ends: 746 [2024-11-22 13:21:31,736 INFO L226 Difference]: Without dead ends: 421 [2024-11-22 13:21:31,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:21:31,737 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 514 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:31,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 348 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:21:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-22 13:21:31,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 362. [2024-11-22 13:21:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 304 states have (on average 1.2664473684210527) internal successors, (385), 308 states have internal predecessors, (385), 49 states have call successors, (49), 8 states have call predecessors, (49), 8 states have return successors, (49), 45 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-22 13:21:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 483 transitions. [2024-11-22 13:21:31,794 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 483 transitions. Word has length 148 [2024-11-22 13:21:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:31,794 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 483 transitions. [2024-11-22 13:21:31,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:31,795 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 483 transitions. [2024-11-22 13:21:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 13:21:31,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:31,796 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:31,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 13:21:31,796 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:31,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash -113133462, now seen corresponding path program 1 times [2024-11-22 13:21:31,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:31,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307635981] [2024-11-22 13:21:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:31,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:32,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:32,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307635981] [2024-11-22 13:21:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307635981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:32,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:32,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 13:21:32,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068446724] [2024-11-22 13:21:32,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:32,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:21:32,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:32,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:21:32,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:21:32,694 INFO L87 Difference]: Start difference. First operand 362 states and 483 transitions. Second operand has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:33,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:33,347 INFO L93 Difference]: Finished difference Result 734 states and 982 transitions. [2024-11-22 13:21:33,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:21:33,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 148 [2024-11-22 13:21:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:33,350 INFO L225 Difference]: With dead ends: 734 [2024-11-22 13:21:33,350 INFO L226 Difference]: Without dead ends: 408 [2024-11-22 13:21:33,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:21:33,351 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 210 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:33,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 470 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:21:33,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-22 13:21:33,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 405. [2024-11-22 13:21:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 338 states have (on average 1.257396449704142) internal successors, (425), 343 states have internal predecessors, (425), 57 states have call successors, (57), 9 states have call predecessors, (57), 9 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-22 13:21:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 539 transitions. [2024-11-22 13:21:33,456 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 539 transitions. Word has length 148 [2024-11-22 13:21:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:33,457 INFO L471 AbstractCegarLoop]: Abstraction has 405 states and 539 transitions. [2024-11-22 13:21:33,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 539 transitions. [2024-11-22 13:21:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 13:21:33,458 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:33,458 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:33,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 13:21:33,458 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:33,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:33,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2142052996, now seen corresponding path program 1 times [2024-11-22 13:21:33,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:33,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994556527] [2024-11-22 13:21:33,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:33,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:35,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:35,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994556527] [2024-11-22 13:21:35,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994556527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:35,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:35,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-22 13:21:35,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874773392] [2024-11-22 13:21:35,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:35,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:21:35,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:35,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:21:35,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:21:35,473 INFO L87 Difference]: Start difference. First operand 405 states and 539 transitions. Second operand has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 17 states have internal predecessors, (56), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:36,664 INFO L93 Difference]: Finished difference Result 831 states and 1109 transitions. [2024-11-22 13:21:36,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:21:36,665 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 17 states have internal predecessors, (56), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) Word has length 148 [2024-11-22 13:21:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:36,666 INFO L225 Difference]: With dead ends: 831 [2024-11-22 13:21:36,666 INFO L226 Difference]: Without dead ends: 462 [2024-11-22 13:21:36,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:21:36,671 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 443 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:36,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 560 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 13:21:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-22 13:21:36,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 456. [2024-11-22 13:21:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 380 states have (on average 1.2552631578947369) internal successors, (477), 386 states have internal predecessors, (477), 65 states have call successors, (65), 10 states have call predecessors, (65), 10 states have return successors, (65), 59 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-22 13:21:36,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 607 transitions. [2024-11-22 13:21:36,752 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 607 transitions. Word has length 148 [2024-11-22 13:21:36,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:36,754 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 607 transitions. [2024-11-22 13:21:36,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 17 states have internal predecessors, (56), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 607 transitions. [2024-11-22 13:21:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 13:21:36,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:36,755 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:36,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 13:21:36,755 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:36,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:36,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1673669073, now seen corresponding path program 1 times [2024-11-22 13:21:36,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:36,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941434775] [2024-11-22 13:21:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:36,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:38,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:38,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941434775] [2024-11-22 13:21:38,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941434775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:38,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:38,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 13:21:38,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302056282] [2024-11-22 13:21:38,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:38,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:21:38,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:38,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:21:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:21:38,524 INFO L87 Difference]: Start difference. First operand 456 states and 607 transitions. Second operand has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:39,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:39,382 INFO L93 Difference]: Finished difference Result 1012 states and 1345 transitions. [2024-11-22 13:21:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:21:39,386 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 148 [2024-11-22 13:21:39,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:39,389 INFO L225 Difference]: With dead ends: 1012 [2024-11-22 13:21:39,389 INFO L226 Difference]: Without dead ends: 592 [2024-11-22 13:21:39,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:21:39,390 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 276 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:39,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 723 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:21:39,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-22 13:21:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 474. [2024-11-22 13:21:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 398 states have (on average 1.2512562814070352) internal successors, (498), 404 states have internal predecessors, (498), 65 states have call successors, (65), 10 states have call predecessors, (65), 10 states have return successors, (65), 59 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-22 13:21:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 628 transitions. [2024-11-22 13:21:39,521 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 628 transitions. Word has length 148 [2024-11-22 13:21:39,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:39,521 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 628 transitions. [2024-11-22 13:21:39,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:39,521 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 628 transitions. [2024-11-22 13:21:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 13:21:39,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:39,522 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:39,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 13:21:39,522 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:39,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:39,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1341434545, now seen corresponding path program 1 times [2024-11-22 13:21:39,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:39,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970600020] [2024-11-22 13:21:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:39,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:43,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:43,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970600020] [2024-11-22 13:21:43,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970600020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:43,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:43,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 13:21:43,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510185766] [2024-11-22 13:21:43,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:43,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:21:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:43,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:21:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:21:43,785 INFO L87 Difference]: Start difference. First operand 474 states and 628 transitions. Second operand has 14 states, 11 states have (on average 5.090909090909091) internal successors, (56), 14 states have internal predecessors, (56), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 13:21:45,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:45,012 INFO L93 Difference]: Finished difference Result 1053 states and 1389 transitions. [2024-11-22 13:21:45,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:21:45,013 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 5.090909090909091) internal successors, (56), 14 states have internal predecessors, (56), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 5 states have call successors, (19) Word has length 148 [2024-11-22 13:21:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:45,019 INFO L225 Difference]: With dead ends: 1053 [2024-11-22 13:21:45,020 INFO L226 Difference]: Without dead ends: 615 [2024-11-22 13:21:45,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-22 13:21:45,021 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 248 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:45,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 524 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 13:21:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-22 13:21:45,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 497. [2024-11-22 13:21:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 418 states have (on average 1.2511961722488039) internal successors, (523), 425 states have internal predecessors, (523), 67 states have call successors, (67), 11 states have call predecessors, (67), 11 states have return successors, (67), 60 states have call predecessors, (67), 67 states have call successors, (67) [2024-11-22 13:21:45,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 657 transitions. [2024-11-22 13:21:45,237 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 657 transitions. Word has length 148 [2024-11-22 13:21:45,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:45,237 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 657 transitions. [2024-11-22 13:21:45,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 5.090909090909091) internal successors, (56), 14 states have internal predecessors, (56), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 13:21:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 657 transitions. [2024-11-22 13:21:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 13:21:45,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:45,242 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:45,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 13:21:45,242 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:45,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1611629459, now seen corresponding path program 1 times [2024-11-22 13:21:45,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:45,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002154807] [2024-11-22 13:21:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:45,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:49,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:49,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002154807] [2024-11-22 13:21:49,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002154807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:49,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:49,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-22 13:21:49,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814373574] [2024-11-22 13:21:49,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:49,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:21:49,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:49,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:21:49,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:21:49,757 INFO L87 Difference]: Start difference. First operand 497 states and 657 transitions. Second operand has 17 states, 14 states have (on average 4.0) internal successors, (56), 17 states have internal predecessors, (56), 6 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-22 13:21:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:51,612 INFO L93 Difference]: Finished difference Result 1078 states and 1419 transitions. [2024-11-22 13:21:51,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:21:51,612 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.0) internal successors, (56), 17 states have internal predecessors, (56), 6 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 6 states have call successors, (19) Word has length 148 [2024-11-22 13:21:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:51,615 INFO L225 Difference]: With dead ends: 1078 [2024-11-22 13:21:51,615 INFO L226 Difference]: Without dead ends: 617 [2024-11-22 13:21:51,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:21:51,616 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 474 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1442 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:51,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 601 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1442 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 13:21:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-22 13:21:51,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 419. [2024-11-22 13:21:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 352 states have (on average 1.2556818181818181) internal successors, (442), 357 states have internal predecessors, (442), 57 states have call successors, (57), 9 states have call predecessors, (57), 9 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-22 13:21:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 556 transitions. [2024-11-22 13:21:51,694 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 556 transitions. Word has length 148 [2024-11-22 13:21:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:51,694 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 556 transitions. [2024-11-22 13:21:51,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.0) internal successors, (56), 17 states have internal predecessors, (56), 6 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 6 states have call successors, (19) [2024-11-22 13:21:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 556 transitions. [2024-11-22 13:21:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 13:21:51,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:51,695 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:51,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 13:21:51,695 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:51,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1403474159, now seen corresponding path program 1 times [2024-11-22 13:21:51,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:51,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116049336] [2024-11-22 13:21:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:51,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:52,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:52,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116049336] [2024-11-22 13:21:52,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116049336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:52,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:52,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:21:52,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624110264] [2024-11-22 13:21:52,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:52,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:21:52,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:52,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:21:52,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:21:52,204 INFO L87 Difference]: Start difference. First operand 419 states and 556 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:21:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:52,545 INFO L93 Difference]: Finished difference Result 862 states and 1144 transitions. [2024-11-22 13:21:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:21:52,546 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 148 [2024-11-22 13:21:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:52,549 INFO L225 Difference]: With dead ends: 862 [2024-11-22 13:21:52,549 INFO L226 Difference]: Without dead ends: 479 [2024-11-22 13:21:52,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:21:52,550 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 189 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:52,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 780 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 13:21:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-22 13:21:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 401. [2024-11-22 13:21:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 334 states have (on average 1.2604790419161678) internal successors, (421), 339 states have internal predecessors, (421), 57 states have call successors, (57), 9 states have call predecessors, (57), 9 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-22 13:21:52,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 535 transitions. [2024-11-22 13:21:52,635 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 535 transitions. Word has length 148 [2024-11-22 13:21:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:52,635 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 535 transitions. [2024-11-22 13:21:52,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:21:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 535 transitions. [2024-11-22 13:21:52,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 13:21:52,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:52,636 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:52,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 13:21:52,636 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:52,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:52,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1371141893, now seen corresponding path program 1 times [2024-11-22 13:21:52,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:52,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007940699] [2024-11-22 13:21:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:52,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:54,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:54,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007940699] [2024-11-22 13:21:54,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007940699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:54,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:54,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 13:21:54,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008055309] [2024-11-22 13:21:54,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:54,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:21:54,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:21:54,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:21:54,144 INFO L87 Difference]: Start difference. First operand 401 states and 535 transitions. Second operand has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:55,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:55,497 INFO L93 Difference]: Finished difference Result 872 states and 1173 transitions. [2024-11-22 13:21:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:21:55,497 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 148 [2024-11-22 13:21:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:55,500 INFO L225 Difference]: With dead ends: 872 [2024-11-22 13:21:55,500 INFO L226 Difference]: Without dead ends: 507 [2024-11-22 13:21:55,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2024-11-22 13:21:55,505 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 336 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:55,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 838 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 13:21:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-22 13:21:55,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 430. [2024-11-22 13:21:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 363 states have (on average 1.2754820936639117) internal successors, (463), 368 states have internal predecessors, (463), 57 states have call successors, (57), 9 states have call predecessors, (57), 9 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-22 13:21:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 577 transitions. [2024-11-22 13:21:55,586 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 577 transitions. Word has length 148 [2024-11-22 13:21:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:55,586 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 577 transitions. [2024-11-22 13:21:55,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 states have internal predecessors, (56), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:21:55,586 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 577 transitions. [2024-11-22 13:21:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-22 13:21:55,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:55,587 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:55,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 13:21:55,587 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:55,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:55,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1462895876, now seen corresponding path program 1 times [2024-11-22 13:21:55,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:55,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561397916] [2024-11-22 13:21:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:55,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:21:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:21:58,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:21:58,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561397916] [2024-11-22 13:21:58,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561397916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:21:58,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:21:58,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 13:21:58,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572440154] [2024-11-22 13:21:58,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:21:58,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:21:58,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:21:58,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:21:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:21:58,360 INFO L87 Difference]: Start difference. First operand 430 states and 577 transitions. Second operand has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 13 states have internal predecessors, (57), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:21:59,402 INFO L93 Difference]: Finished difference Result 911 states and 1224 transitions. [2024-11-22 13:21:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:21:59,404 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 13 states have internal predecessors, (57), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) Word has length 149 [2024-11-22 13:21:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:21:59,407 INFO L225 Difference]: With dead ends: 911 [2024-11-22 13:21:59,407 INFO L226 Difference]: Without dead ends: 517 [2024-11-22 13:21:59,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-22 13:21:59,408 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 317 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 13:21:59,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 634 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 13:21:59,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-22 13:21:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 467. [2024-11-22 13:21:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 400 states have (on average 1.2775) internal successors, (511), 405 states have internal predecessors, (511), 57 states have call successors, (57), 9 states have call predecessors, (57), 9 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-22 13:21:59,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 625 transitions. [2024-11-22 13:21:59,486 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 625 transitions. Word has length 149 [2024-11-22 13:21:59,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:21:59,487 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 625 transitions. [2024-11-22 13:21:59,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 13 states have internal predecessors, (57), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:21:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 625 transitions. [2024-11-22 13:21:59,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-22 13:21:59,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:21:59,488 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:21:59,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 13:21:59,488 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:21:59,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:21:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2122814915, now seen corresponding path program 1 times [2024-11-22 13:21:59,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:21:59,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317524860] [2024-11-22 13:21:59,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:21:59,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:21:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:22:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:22:00,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:22:00,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317524860] [2024-11-22 13:22:00,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317524860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:22:00,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:22:00,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 13:22:00,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794077600] [2024-11-22 13:22:00,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:22:00,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:22:00,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:22:00,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:22:00,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:22:00,692 INFO L87 Difference]: Start difference. First operand 467 states and 625 transitions. Second operand has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 10 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:22:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:22:01,324 INFO L93 Difference]: Finished difference Result 880 states and 1180 transitions. [2024-11-22 13:22:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:22:01,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 10 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 149 [2024-11-22 13:22:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:22:01,327 INFO L225 Difference]: With dead ends: 880 [2024-11-22 13:22:01,327 INFO L226 Difference]: Without dead ends: 449 [2024-11-22 13:22:01,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:22:01,329 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 309 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:22:01,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 367 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:22:01,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-22 13:22:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2024-11-22 13:22:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 380 states have (on average 1.2578947368421052) internal successors, (478), 385 states have internal predecessors, (478), 57 states have call successors, (57), 9 states have call predecessors, (57), 9 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-22 13:22:01,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 592 transitions. [2024-11-22 13:22:01,417 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 592 transitions. Word has length 149 [2024-11-22 13:22:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:22:01,417 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 592 transitions. [2024-11-22 13:22:01,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 10 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:22:01,417 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 592 transitions. [2024-11-22 13:22:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-22 13:22:01,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:22:01,418 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:22:01,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 13:22:01,419 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:22:01,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:22:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1291821504, now seen corresponding path program 1 times [2024-11-22 13:22:01,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:22:01,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119898913] [2024-11-22 13:22:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:22:01,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:22:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:22:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:22:03,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:22:03,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119898913] [2024-11-22 13:22:03,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119898913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:22:03,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:22:03,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-22 13:22:03,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732409723] [2024-11-22 13:22:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:22:03,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 13:22:03,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:22:03,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 13:22:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-22 13:22:03,848 INFO L87 Difference]: Start difference. First operand 447 states and 592 transitions. Second operand has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:22:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:22:05,856 INFO L93 Difference]: Finished difference Result 949 states and 1264 transitions. [2024-11-22 13:22:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:22:05,857 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 149 [2024-11-22 13:22:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:22:05,859 INFO L225 Difference]: With dead ends: 949 [2024-11-22 13:22:05,859 INFO L226 Difference]: Without dead ends: 538 [2024-11-22 13:22:05,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2024-11-22 13:22:05,860 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 178 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:22:05,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 886 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 13:22:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-22 13:22:05,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 455. [2024-11-22 13:22:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 388 states have (on average 1.2577319587628866) internal successors, (488), 393 states have internal predecessors, (488), 57 states have call successors, (57), 9 states have call predecessors, (57), 9 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-22 13:22:05,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 602 transitions. [2024-11-22 13:22:05,941 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 602 transitions. Word has length 149 [2024-11-22 13:22:05,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:22:05,942 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 602 transitions. [2024-11-22 13:22:05,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:22:05,942 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 602 transitions. [2024-11-22 13:22:05,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-22 13:22:05,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:22:05,943 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:22:05,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 13:22:05,943 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:22:05,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:22:05,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1261388487, now seen corresponding path program 1 times [2024-11-22 13:22:05,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:22:05,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672112358] [2024-11-22 13:22:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:22:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:22:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:22:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:22:06,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:22:06,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672112358] [2024-11-22 13:22:06,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672112358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:22:06,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:22:06,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:22:06,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734948787] [2024-11-22 13:22:06,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:22:06,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:22:06,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:22:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:22:06,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:22:06,671 INFO L87 Difference]: Start difference. First operand 455 states and 602 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:22:07,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:22:07,474 INFO L93 Difference]: Finished difference Result 994 states and 1311 transitions. [2024-11-22 13:22:07,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:22:07,475 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 150 [2024-11-22 13:22:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:22:07,477 INFO L225 Difference]: With dead ends: 994 [2024-11-22 13:22:07,477 INFO L226 Difference]: Without dead ends: 575 [2024-11-22 13:22:07,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-22 13:22:07,478 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 214 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:22:07,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 877 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:22:07,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-11-22 13:22:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 512. [2024-11-22 13:22:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 445 states have (on average 1.2426966292134831) internal successors, (553), 450 states have internal predecessors, (553), 57 states have call successors, (57), 9 states have call predecessors, (57), 9 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-22 13:22:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 667 transitions. [2024-11-22 13:22:07,562 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 667 transitions. Word has length 150 [2024-11-22 13:22:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:22:07,562 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 667 transitions. [2024-11-22 13:22:07,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:22:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 667 transitions. [2024-11-22 13:22:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-22 13:22:07,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:22:07,563 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:22:07,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 13:22:07,563 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:22:07,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:22:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1755326785, now seen corresponding path program 1 times [2024-11-22 13:22:07,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:22:07,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211922784] [2024-11-22 13:22:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:22:07,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:22:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:22:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:22:10,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:22:10,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211922784] [2024-11-22 13:22:10,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211922784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:22:10,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:22:10,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 13:22:10,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075919876] [2024-11-22 13:22:10,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:22:10,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 13:22:10,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:22:10,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 13:22:10,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:22:10,860 INFO L87 Difference]: Start difference. First operand 512 states and 667 transitions. Second operand has 15 states, 13 states have (on average 4.461538461538462) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 4 states have call successors, (19)