./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -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 aa83d3f5173117ef698c13f0bcf19338ee3f6f59e63ac9b8ac7bd80f7d40c635 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:39:11,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:39:11,215 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:39:11,221 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:39:11,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:39:11,252 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:39:11,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:39:11,253 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:39:11,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:39:11,255 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:39:11,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:39:11,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:39:11,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:39:11,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:39:11,257 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:39:11,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:39:11,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:39:11,258 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:39:11,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:39:11,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:39:11,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:39:11,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:39:11,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:39:11,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:39:11,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:39:11,261 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:39:11,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:39:11,262 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:39:11,262 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:39:11,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:39:11,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:39:11,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:39:11,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:39:11,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:39:11,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:39:11,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:39:11,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:39:11,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:39:11,265 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:39:11,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:39:11,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:39:11,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:39:11,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa83d3f5173117ef698c13f0bcf19338ee3f6f59e63ac9b8ac7bd80f7d40c635 [2024-11-16 09:39:11,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:39:11,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:39:11,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:39:11,564 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:39:11,565 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:39:11,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-16 09:39:13,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:39:13,552 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:39:13,553 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-16 09:39:13,592 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63cebcf18/82ea38d5979044c3b8a3369a0d6ba8af/FLAGbaa0c2195 [2024-11-16 09:39:13,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63cebcf18/82ea38d5979044c3b8a3369a0d6ba8af [2024-11-16 09:39:13,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:39:13,695 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:39:13,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:39:13,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:39:13,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:39:13,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:39:13" (1/1) ... [2024-11-16 09:39:13,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f380b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:13, skipping insertion in model container [2024-11-16 09:39:13,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:39:13" (1/1) ... [2024-11-16 09:39:13,843 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:39:14,199 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/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[8786,8799] [2024-11-16 09:39:14,243 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/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[14341,14354] [2024-11-16 09:39:15,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:39:15,024 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:39:15,067 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/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[8786,8799] [2024-11-16 09:39:15,080 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/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[14341,14354] [2024-11-16 09:39:15,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:39:15,498 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:39:15,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15 WrapperNode [2024-11-16 09:39:15,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:39:15,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:39:15,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:39:15,500 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:39:15,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:15,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:15,877 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5035 [2024-11-16 09:39:15,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:39:15,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:39:15,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:39:15,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:39:15,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:15,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:16,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:16,163 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 09:39:16,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:16,164 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:16,316 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:16,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:16,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:16,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:16,424 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:39:16,425 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:39:16,425 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:39:16,425 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:39:16,426 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (1/1) ... [2024-11-16 09:39:16,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:39:16,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:39:16,464 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) [2024-11-16 09:39:16,467 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 [2024-11-16 09:39:16,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:39:16,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:39:16,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:39:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:39:16,606 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:39:16,608 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:39:20,937 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L5024: havoc calculate_output3_#t~ret35#1; [2024-11-16 09:39:20,937 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L2055: havoc calculate_output_#t~ret33#1; [2024-11-16 09:39:20,937 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3534: havoc calculate_output2_#t~ret34#1; [2024-11-16 09:39:21,139 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-11-16 09:39:21,139 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:39:21,184 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:39:21,185 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:39:21,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:39:21 BoogieIcfgContainer [2024-11-16 09:39:21,186 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:39:21,188 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:39:21,189 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:39:21,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:39:21,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:39:13" (1/3) ... [2024-11-16 09:39:21,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103e9090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:39:21, skipping insertion in model container [2024-11-16 09:39:21,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:15" (2/3) ... [2024-11-16 09:39:21,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103e9090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:39:21, skipping insertion in model container [2024-11-16 09:39:21,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:39:21" (3/3) ... [2024-11-16 09:39:21,198 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-16 09:39:21,215 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:39:21,216 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:39:21,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:39:21,329 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;@2a34f276, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:39:21,330 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:39:21,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 892 states, 889 states have (on average 1.8987626546681664) internal successors, (1688), 891 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 09:39:21,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:21,348 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:21,348 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:21,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:21,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1707604068, now seen corresponding path program 1 times [2024-11-16 09:39:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:21,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711484711] [2024-11-16 09:39:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:21,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:21,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:21,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711484711] [2024-11-16 09:39:21,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711484711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:21,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:21,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:39:21,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537373226] [2024-11-16 09:39:21,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:21,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 09:39:21,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:21,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 09:39:21,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:39:21,744 INFO L87 Difference]: Start difference. First operand has 892 states, 889 states have (on average 1.8987626546681664) internal successors, (1688), 891 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:21,842 INFO L93 Difference]: Finished difference Result 1751 states and 3318 transitions. [2024-11-16 09:39:21,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 09:39:21,848 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-16 09:39:21,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:21,878 INFO L225 Difference]: With dead ends: 1751 [2024-11-16 09:39:21,881 INFO L226 Difference]: Without dead ends: 824 [2024-11-16 09:39:21,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:39:21,894 INFO L432 NwaCegarLoop]: 1617 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, 1617 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 [2024-11-16 09:39:21,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-16 09:39:21,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2024-11-16 09:39:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 822 states have (on average 1.889294403892944) internal successors, (1553), 823 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1553 transitions. [2024-11-16 09:39:21,988 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1553 transitions. Word has length 24 [2024-11-16 09:39:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:21,989 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 1553 transitions. [2024-11-16 09:39:21,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:21,990 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1553 transitions. [2024-11-16 09:39:21,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 09:39:21,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:21,991 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:21,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:39:21,992 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:21,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash 710531715, now seen corresponding path program 1 times [2024-11-16 09:39:21,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:21,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052934637] [2024-11-16 09:39:21,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:21,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:22,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:22,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052934637] [2024-11-16 09:39:22,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052934637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:22,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:22,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:39:22,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242246110] [2024-11-16 09:39:22,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:22,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:39:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:22,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:39:22,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:39:22,278 INFO L87 Difference]: Start difference. First operand 824 states and 1553 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:22,387 INFO L93 Difference]: Finished difference Result 867 states and 1617 transitions. [2024-11-16 09:39:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:39:22,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-16 09:39:22,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:22,392 INFO L225 Difference]: With dead ends: 867 [2024-11-16 09:39:22,392 INFO L226 Difference]: Without dead ends: 824 [2024-11-16 09:39:22,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:39:22,395 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 0 mSDsluCounter, 4625 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6176 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:22,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6176 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:22,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-16 09:39:22,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2024-11-16 09:39:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 822 states have (on average 1.8613138686131387) internal successors, (1530), 823 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1530 transitions. [2024-11-16 09:39:22,425 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1530 transitions. Word has length 24 [2024-11-16 09:39:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:22,426 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 1530 transitions. [2024-11-16 09:39:22,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1530 transitions. [2024-11-16 09:39:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 09:39:22,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:22,429 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:22,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:39:22,429 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:22,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:22,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1553013747, now seen corresponding path program 1 times [2024-11-16 09:39:22,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:22,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193985825] [2024-11-16 09:39:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:22,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:22,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:22,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193985825] [2024-11-16 09:39:22,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193985825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:22,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:22,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:22,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275800729] [2024-11-16 09:39:22,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:22,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:22,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:22,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:22,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:22,652 INFO L87 Difference]: Start difference. First operand 824 states and 1530 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:22,888 INFO L93 Difference]: Finished difference Result 1136 states and 2010 transitions. [2024-11-16 09:39:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 09:39:22,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 09:39:22,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:22,897 INFO L225 Difference]: With dead ends: 1136 [2024-11-16 09:39:22,897 INFO L226 Difference]: Without dead ends: 1097 [2024-11-16 09:39:22,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:39:22,899 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 6247 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6247 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:22,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6247 Valid, 2362 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:22,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2024-11-16 09:39:22,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 860. [2024-11-16 09:39:22,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 858 states have (on average 1.8484848484848484) internal successors, (1586), 859 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1586 transitions. [2024-11-16 09:39:22,922 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1586 transitions. Word has length 46 [2024-11-16 09:39:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:22,923 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1586 transitions. [2024-11-16 09:39:22,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1586 transitions. [2024-11-16 09:39:22,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 09:39:22,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:22,925 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:22,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:39:22,925 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:22,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:22,926 INFO L85 PathProgramCache]: Analyzing trace with hash 196801391, now seen corresponding path program 1 times [2024-11-16 09:39:22,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:22,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266484658] [2024-11-16 09:39:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:22,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:23,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:23,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266484658] [2024-11-16 09:39:23,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266484658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:23,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:23,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:23,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469399511] [2024-11-16 09:39:23,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:23,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:23,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:23,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:23,197 INFO L87 Difference]: Start difference. First operand 860 states and 1586 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:23,346 INFO L93 Difference]: Finished difference Result 938 states and 1704 transitions. [2024-11-16 09:39:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:39:23,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-16 09:39:23,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:23,351 INFO L225 Difference]: With dead ends: 938 [2024-11-16 09:39:23,351 INFO L226 Difference]: Without dead ends: 863 [2024-11-16 09:39:23,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:39:23,355 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 4458 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4458 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:23,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4458 Valid, 1692 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:23,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-11-16 09:39:23,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 860. [2024-11-16 09:39:23,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 858 states have (on average 1.8473193473193472) internal successors, (1585), 859 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1585 transitions. [2024-11-16 09:39:23,383 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1585 transitions. Word has length 48 [2024-11-16 09:39:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:23,384 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1585 transitions. [2024-11-16 09:39:23,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1585 transitions. [2024-11-16 09:39:23,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 09:39:23,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:23,386 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:23,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:39:23,388 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:23,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:23,389 INFO L85 PathProgramCache]: Analyzing trace with hash -765272266, now seen corresponding path program 1 times [2024-11-16 09:39:23,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:23,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532333278] [2024-11-16 09:39:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:23,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:23,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:23,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532333278] [2024-11-16 09:39:23,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532333278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:23,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:23,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:23,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758003768] [2024-11-16 09:39:23,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:23,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:23,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:23,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:23,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:23,490 INFO L87 Difference]: Start difference. First operand 860 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:23,520 INFO L93 Difference]: Finished difference Result 998 states and 1795 transitions. [2024-11-16 09:39:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:23,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 09:39:23,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:23,525 INFO L225 Difference]: With dead ends: 998 [2024-11-16 09:39:23,525 INFO L226 Difference]: Without dead ends: 923 [2024-11-16 09:39:23,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:23,526 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 1478 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:23,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1591 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:23,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-16 09:39:23,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 920. [2024-11-16 09:39:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.8246187363834423) internal successors, (1675), 919 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1675 transitions. [2024-11-16 09:39:23,548 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1675 transitions. Word has length 49 [2024-11-16 09:39:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:23,548 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1675 transitions. [2024-11-16 09:39:23,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1675 transitions. [2024-11-16 09:39:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:23,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:23,549 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:23,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:39:23,550 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:23,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:23,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1807690319, now seen corresponding path program 1 times [2024-11-16 09:39:23,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:23,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681551200] [2024-11-16 09:39:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:23,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:23,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681551200] [2024-11-16 09:39:23,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681551200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:23,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:23,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111840190] [2024-11-16 09:39:23,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:23,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:23,629 INFO L87 Difference]: Start difference. First operand 920 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:23,656 INFO L93 Difference]: Finished difference Result 1065 states and 1895 transitions. [2024-11-16 09:39:23,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:23,661 INFO L225 Difference]: With dead ends: 1065 [2024-11-16 09:39:23,661 INFO L226 Difference]: Without dead ends: 990 [2024-11-16 09:39:23,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:23,662 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 1490 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:23,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1635 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:23,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-16 09:39:23,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 987. [2024-11-16 09:39:23,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 985 states have (on average 1.8020304568527918) internal successors, (1775), 986 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1775 transitions. [2024-11-16 09:39:23,685 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1775 transitions. Word has length 50 [2024-11-16 09:39:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:23,685 INFO L471 AbstractCegarLoop]: Abstraction has 987 states and 1775 transitions. [2024-11-16 09:39:23,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1775 transitions. [2024-11-16 09:39:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:23,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:23,687 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:23,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:39:23,687 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:23,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:23,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1485867249, now seen corresponding path program 1 times [2024-11-16 09:39:23,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:23,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988023345] [2024-11-16 09:39:23,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:23,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:23,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988023345] [2024-11-16 09:39:23,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988023345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:23,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:23,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:23,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423862972] [2024-11-16 09:39:23,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:23,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:23,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:23,740 INFO L87 Difference]: Start difference. First operand 987 states and 1775 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:23,774 INFO L93 Difference]: Finished difference Result 1361 states and 2337 transitions. [2024-11-16 09:39:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:23,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:23,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:23,779 INFO L225 Difference]: With dead ends: 1361 [2024-11-16 09:39:23,780 INFO L226 Difference]: Without dead ends: 1162 [2024-11-16 09:39:23,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:23,781 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 1488 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:23,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1641 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2024-11-16 09:39:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1159. [2024-11-16 09:39:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1157 states have (on average 1.7519446845289541) internal successors, (2027), 1158 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2027 transitions. [2024-11-16 09:39:23,841 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2027 transitions. Word has length 50 [2024-11-16 09:39:23,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:23,842 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 2027 transitions. [2024-11-16 09:39:23,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2027 transitions. [2024-11-16 09:39:23,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:23,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:23,843 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:23,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:39:23,843 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:23,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1471417393, now seen corresponding path program 1 times [2024-11-16 09:39:23,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:23,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085670928] [2024-11-16 09:39:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:23,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:23,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:23,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085670928] [2024-11-16 09:39:23,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085670928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:23,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:23,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:23,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185586673] [2024-11-16 09:39:23,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:23,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:23,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:23,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:23,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:23,894 INFO L87 Difference]: Start difference. First operand 1159 states and 2027 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:23,932 INFO L93 Difference]: Finished difference Result 1853 states and 3051 transitions. [2024-11-16 09:39:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:23,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:23,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:23,939 INFO L225 Difference]: With dead ends: 1853 [2024-11-16 09:39:23,939 INFO L226 Difference]: Without dead ends: 1482 [2024-11-16 09:39:23,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:23,941 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 1486 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:23,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1643 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2024-11-16 09:39:23,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1479. [2024-11-16 09:39:23,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 1.6811103588354772) internal successors, (2483), 1478 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2483 transitions. [2024-11-16 09:39:23,976 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2483 transitions. Word has length 50 [2024-11-16 09:39:23,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:23,976 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 2483 transitions. [2024-11-16 09:39:23,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2483 transitions. [2024-11-16 09:39:23,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:23,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:23,977 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:23,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:39:23,978 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:23,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash -731947151, now seen corresponding path program 1 times [2024-11-16 09:39:23,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:23,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980267108] [2024-11-16 09:39:23,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:23,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:24,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:24,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:24,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980267108] [2024-11-16 09:39:24,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980267108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:24,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:24,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:24,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641505418] [2024-11-16 09:39:24,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:24,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:24,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:24,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:24,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:24,030 INFO L87 Difference]: Start difference. First operand 1479 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:24,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:24,069 INFO L93 Difference]: Finished difference Result 2765 states and 4335 transitions. [2024-11-16 09:39:24,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:24,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:24,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:24,077 INFO L225 Difference]: With dead ends: 2765 [2024-11-16 09:39:24,077 INFO L226 Difference]: Without dead ends: 2074 [2024-11-16 09:39:24,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:24,080 INFO L432 NwaCegarLoop]: 1572 mSDtfsCounter, 1484 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:24,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1645 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2024-11-16 09:39:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2071. [2024-11-16 09:39:24,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 2069 states have (on average 1.5944900918318028) internal successors, (3299), 2070 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 3299 transitions. [2024-11-16 09:39:24,130 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 3299 transitions. Word has length 50 [2024-11-16 09:39:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:24,130 INFO L471 AbstractCegarLoop]: Abstraction has 2071 states and 3299 transitions. [2024-11-16 09:39:24,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 3299 transitions. [2024-11-16 09:39:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:24,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:24,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:24,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:39:24,132 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:24,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:24,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1256224206, now seen corresponding path program 1 times [2024-11-16 09:39:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:24,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984584728] [2024-11-16 09:39:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:24,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:24,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984584728] [2024-11-16 09:39:24,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984584728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:24,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:39:24,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023838570] [2024-11-16 09:39:24,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:24,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:39:24,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:24,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:39:24,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:39:24,321 INFO L87 Difference]: Start difference. First operand 2071 states and 3299 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:24,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:24,378 INFO L93 Difference]: Finished difference Result 2170 states and 3429 transitions. [2024-11-16 09:39:24,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:39:24,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:24,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:24,386 INFO L225 Difference]: With dead ends: 2170 [2024-11-16 09:39:24,387 INFO L226 Difference]: Without dead ends: 2167 [2024-11-16 09:39:24,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:39:24,388 INFO L432 NwaCegarLoop]: 1527 mSDtfsCounter, 0 mSDsluCounter, 4572 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6099 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:24,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6099 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2024-11-16 09:39:24,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2167. [2024-11-16 09:39:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2165 states have (on average 1.5644341801385682) internal successors, (3387), 2166 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3387 transitions. [2024-11-16 09:39:24,439 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3387 transitions. Word has length 50 [2024-11-16 09:39:24,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:24,440 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 3387 transitions. [2024-11-16 09:39:24,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3387 transitions. [2024-11-16 09:39:24,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:24,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:24,441 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:24,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:39:24,441 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:24,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:24,442 INFO L85 PathProgramCache]: Analyzing trace with hash 916810233, now seen corresponding path program 1 times [2024-11-16 09:39:24,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:24,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257442882] [2024-11-16 09:39:24,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:24,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:24,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:24,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257442882] [2024-11-16 09:39:24,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257442882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:24,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:24,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:24,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299689395] [2024-11-16 09:39:24,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:24,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 09:39:24,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 09:39:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:39:24,551 INFO L87 Difference]: Start difference. First operand 2167 states and 3387 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:30,139 INFO L93 Difference]: Finished difference Result 4426 states and 7700 transitions. [2024-11-16 09:39:30,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 09:39:30,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:30,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:30,153 INFO L225 Difference]: With dead ends: 4426 [2024-11-16 09:39:30,153 INFO L226 Difference]: Without dead ends: 3671 [2024-11-16 09:39:30,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:39:30,156 INFO L432 NwaCegarLoop]: 766 mSDtfsCounter, 2397 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:30,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2397 Valid, 789 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-16 09:39:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2024-11-16 09:39:30,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3671. [2024-11-16 09:39:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3669 states have (on average 1.4998637230853094) internal successors, (5503), 3670 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:30,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5503 transitions. [2024-11-16 09:39:30,256 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5503 transitions. Word has length 50 [2024-11-16 09:39:30,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:30,256 INFO L471 AbstractCegarLoop]: Abstraction has 3671 states and 5503 transitions. [2024-11-16 09:39:30,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5503 transitions. [2024-11-16 09:39:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:39:30,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:30,259 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:30,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:39:30,259 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:30,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:30,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2040269213, now seen corresponding path program 1 times [2024-11-16 09:39:30,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:30,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590813468] [2024-11-16 09:39:30,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:30,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:39:30,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:30,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590813468] [2024-11-16 09:39:30,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590813468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:30,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:30,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:30,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188713551] [2024-11-16 09:39:30,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:30,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:30,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:30,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:30,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:30,430 INFO L87 Difference]: Start difference. First operand 3671 states and 5503 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:30,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:30,694 INFO L93 Difference]: Finished difference Result 9118 states and 13049 transitions. [2024-11-16 09:39:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:39:30,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:39:30,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:30,734 INFO L225 Difference]: With dead ends: 9118 [2024-11-16 09:39:30,734 INFO L226 Difference]: Without dead ends: 8123 [2024-11-16 09:39:30,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:39:30,742 INFO L432 NwaCegarLoop]: 1585 mSDtfsCounter, 4665 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 3423 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:30,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4665 Valid, 3423 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8123 states. [2024-11-16 09:39:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8123 to 4863. [2024-11-16 09:39:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4861 states have (on average 1.4678049783995062) internal successors, (7135), 4862 states have internal predecessors, (7135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 7135 transitions. [2024-11-16 09:39:30,922 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 7135 transitions. Word has length 69 [2024-11-16 09:39:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:30,922 INFO L471 AbstractCegarLoop]: Abstraction has 4863 states and 7135 transitions. [2024-11-16 09:39:30,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 7135 transitions. [2024-11-16 09:39:30,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:39:30,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:30,927 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:30,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:39:30,927 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:30,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:30,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1038859485, now seen corresponding path program 1 times [2024-11-16 09:39:30,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:30,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567565524] [2024-11-16 09:39:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:30,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:39:31,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:31,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567565524] [2024-11-16 09:39:31,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567565524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:31,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:31,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:31,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589596999] [2024-11-16 09:39:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:31,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:31,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:31,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:31,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:31,097 INFO L87 Difference]: Start difference. First operand 4863 states and 7135 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:31,330 INFO L93 Difference]: Finished difference Result 10494 states and 14945 transitions. [2024-11-16 09:39:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:39:31,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:39:31,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:31,353 INFO L225 Difference]: With dead ends: 10494 [2024-11-16 09:39:31,354 INFO L226 Difference]: Without dead ends: 9115 [2024-11-16 09:39:31,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:39:31,361 INFO L432 NwaCegarLoop]: 1586 mSDtfsCounter, 4667 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:31,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3397 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:31,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9115 states. [2024-11-16 09:39:31,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9115 to 6735. [2024-11-16 09:39:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6735 states, 6733 states have (on average 1.4399227684538838) internal successors, (9695), 6734 states have internal predecessors, (9695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:31,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6735 states to 6735 states and 9695 transitions. [2024-11-16 09:39:31,616 INFO L78 Accepts]: Start accepts. Automaton has 6735 states and 9695 transitions. Word has length 69 [2024-11-16 09:39:31,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:31,617 INFO L471 AbstractCegarLoop]: Abstraction has 6735 states and 9695 transitions. [2024-11-16 09:39:31,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6735 states and 9695 transitions. [2024-11-16 09:39:31,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:39:31,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:31,619 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:31,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:39:31,620 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:31,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1024409629, now seen corresponding path program 1 times [2024-11-16 09:39:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61896580] [2024-11-16 09:39:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:31,749 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 09:39:31,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:31,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61896580] [2024-11-16 09:39:31,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61896580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:31,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:31,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:31,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417685798] [2024-11-16 09:39:31,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:31,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:31,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:31,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:31,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:31,752 INFO L87 Difference]: Start difference. First operand 6735 states and 9695 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:32,008 INFO L93 Difference]: Finished difference Result 11870 states and 16833 transitions. [2024-11-16 09:39:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:39:32,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:39:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:32,029 INFO L225 Difference]: With dead ends: 11870 [2024-11-16 09:39:32,029 INFO L226 Difference]: Without dead ends: 10491 [2024-11-16 09:39:32,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:39:32,037 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 4691 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4691 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:32,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4691 Valid, 3378 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:32,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10491 states. [2024-11-16 09:39:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10491 to 8111. [2024-11-16 09:39:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8111 states, 8109 states have (on average 1.4284128745837958) internal successors, (11583), 8110 states have internal predecessors, (11583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8111 states to 8111 states and 11583 transitions. [2024-11-16 09:39:32,247 INFO L78 Accepts]: Start accepts. Automaton has 8111 states and 11583 transitions. Word has length 69 [2024-11-16 09:39:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:32,248 INFO L471 AbstractCegarLoop]: Abstraction has 8111 states and 11583 transitions. [2024-11-16 09:39:32,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8111 states and 11583 transitions. [2024-11-16 09:39:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:39:32,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:32,251 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:32,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:39:32,251 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:32,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:32,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1178954915, now seen corresponding path program 1 times [2024-11-16 09:39:32,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:32,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534079228] [2024-11-16 09:39:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:32,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 09:39:32,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:32,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534079228] [2024-11-16 09:39:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534079228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:32,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:32,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922748851] [2024-11-16 09:39:32,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:32,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:32,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:32,408 INFO L87 Difference]: Start difference. First operand 8111 states and 11583 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:32,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:32,681 INFO L93 Difference]: Finished difference Result 13246 states and 18721 transitions. [2024-11-16 09:39:32,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:39:32,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:39:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:32,705 INFO L225 Difference]: With dead ends: 13246 [2024-11-16 09:39:32,705 INFO L226 Difference]: Without dead ends: 11867 [2024-11-16 09:39:32,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:39:32,714 INFO L432 NwaCegarLoop]: 1584 mSDtfsCounter, 4681 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:32,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 3404 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2024-11-16 09:39:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 9487. [2024-11-16 09:39:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9487 states, 9485 states have (on average 1.420242488139167) internal successors, (13471), 9486 states have internal predecessors, (13471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9487 states to 9487 states and 13471 transitions. [2024-11-16 09:39:33,011 INFO L78 Accepts]: Start accepts. Automaton has 9487 states and 13471 transitions. Word has length 69 [2024-11-16 09:39:33,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:33,011 INFO L471 AbstractCegarLoop]: Abstraction has 9487 states and 13471 transitions. [2024-11-16 09:39:33,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 9487 states and 13471 transitions. [2024-11-16 09:39:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 09:39:33,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:33,014 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:33,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:39:33,014 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:33,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:33,015 INFO L85 PathProgramCache]: Analyzing trace with hash 188019967, now seen corresponding path program 1 times [2024-11-16 09:39:33,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:33,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567387103] [2024-11-16 09:39:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:33,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:33,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:33,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567387103] [2024-11-16 09:39:33,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567387103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:33,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:33,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:33,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146416736] [2024-11-16 09:39:33,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:33,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:33,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:33,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:33,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:33,114 INFO L87 Difference]: Start difference. First operand 9487 states and 13471 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:33,256 INFO L93 Difference]: Finished difference Result 16685 states and 23355 transitions. [2024-11-16 09:39:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:33,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 09:39:33,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:33,275 INFO L225 Difference]: With dead ends: 16685 [2024-11-16 09:39:33,275 INFO L226 Difference]: Without dead ends: 9490 [2024-11-16 09:39:33,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:33,286 INFO L432 NwaCegarLoop]: 1558 mSDtfsCounter, 36 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:33,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3076 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:33,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9490 states. [2024-11-16 09:39:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9490 to 9487. [2024-11-16 09:39:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9487 states, 9485 states have (on average 1.4071692145492884) internal successors, (13347), 9486 states have internal predecessors, (13347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9487 states to 9487 states and 13347 transitions. [2024-11-16 09:39:33,509 INFO L78 Accepts]: Start accepts. Automaton has 9487 states and 13347 transitions. Word has length 71 [2024-11-16 09:39:33,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:33,509 INFO L471 AbstractCegarLoop]: Abstraction has 9487 states and 13347 transitions. [2024-11-16 09:39:33,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,510 INFO L276 IsEmpty]: Start isEmpty. Operand 9487 states and 13347 transitions. [2024-11-16 09:39:33,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 09:39:33,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:33,511 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:33,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 09:39:33,512 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:33,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash -94054337, now seen corresponding path program 1 times [2024-11-16 09:39:33,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:33,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616747303] [2024-11-16 09:39:33,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:33,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:33,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:33,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616747303] [2024-11-16 09:39:33,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616747303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:33,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:33,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:33,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386802840] [2024-11-16 09:39:33,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:33,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:33,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:33,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:33,624 INFO L87 Difference]: Start difference. First operand 9487 states and 13347 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:33,701 INFO L93 Difference]: Finished difference Result 12240 states and 17111 transitions. [2024-11-16 09:39:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:33,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 09:39:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:33,711 INFO L225 Difference]: With dead ends: 12240 [2024-11-16 09:39:33,712 INFO L226 Difference]: Without dead ends: 5045 [2024-11-16 09:39:33,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:33,721 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 32 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:33,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3073 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:33,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5045 states. [2024-11-16 09:39:33,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5045 to 5035. [2024-11-16 09:39:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 5033 states have (on average 1.4502284919531094) internal successors, (7299), 5034 states have internal predecessors, (7299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 7299 transitions. [2024-11-16 09:39:33,813 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 7299 transitions. Word has length 71 [2024-11-16 09:39:33,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:33,813 INFO L471 AbstractCegarLoop]: Abstraction has 5035 states and 7299 transitions. [2024-11-16 09:39:33,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 7299 transitions. [2024-11-16 09:39:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:39:33,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:33,815 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:33,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 09:39:33,815 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:33,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:33,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1636853377, now seen corresponding path program 1 times [2024-11-16 09:39:33,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:33,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783290344] [2024-11-16 09:39:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:33,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:33,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:33,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783290344] [2024-11-16 09:39:33,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783290344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:33,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:33,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:33,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205140610] [2024-11-16 09:39:33,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:33,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:33,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:33,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:33,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:33,960 INFO L87 Difference]: Start difference. First operand 5035 states and 7299 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:34,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:34,007 INFO L93 Difference]: Finished difference Result 6405 states and 9151 transitions. [2024-11-16 09:39:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 09:39:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:34,015 INFO L225 Difference]: With dead ends: 6405 [2024-11-16 09:39:34,015 INFO L226 Difference]: Without dead ends: 3674 [2024-11-16 09:39:34,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:34,020 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 30 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:34,020 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3052 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:34,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2024-11-16 09:39:34,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3671. [2024-11-16 09:39:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3669 states have (on average 1.4796947397110929) internal successors, (5429), 3670 states have internal predecessors, (5429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5429 transitions. [2024-11-16 09:39:34,085 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5429 transitions. Word has length 73 [2024-11-16 09:39:34,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:34,085 INFO L471 AbstractCegarLoop]: Abstraction has 3671 states and 5429 transitions. [2024-11-16 09:39:34,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:34,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5429 transitions. [2024-11-16 09:39:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 09:39:34,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:34,087 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:34,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 09:39:34,087 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:34,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:34,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1090931768, now seen corresponding path program 1 times [2024-11-16 09:39:34,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:34,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748703240] [2024-11-16 09:39:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:34,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:34,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748703240] [2024-11-16 09:39:34,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748703240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:34,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:34,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:34,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764320205] [2024-11-16 09:39:34,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:34,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:34,184 INFO L87 Difference]: Start difference. First operand 3671 states and 5429 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:34,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:34,218 INFO L93 Difference]: Finished difference Result 4359 states and 6346 transitions. [2024-11-16 09:39:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:34,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-16 09:39:34,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:34,224 INFO L225 Difference]: With dead ends: 4359 [2024-11-16 09:39:34,224 INFO L226 Difference]: Without dead ends: 2992 [2024-11-16 09:39:34,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:34,227 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 27 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:34,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3037 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2024-11-16 09:39:34,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2989. [2024-11-16 09:39:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2987 states have (on average 1.5082022095748242) internal successors, (4505), 2988 states have internal predecessors, (4505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 4505 transitions. [2024-11-16 09:39:34,269 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 4505 transitions. Word has length 75 [2024-11-16 09:39:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:34,270 INFO L471 AbstractCegarLoop]: Abstraction has 2989 states and 4505 transitions. [2024-11-16 09:39:34,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 4505 transitions. [2024-11-16 09:39:34,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 09:39:34,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:34,272 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:34,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 09:39:34,273 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:34,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:34,274 INFO L85 PathProgramCache]: Analyzing trace with hash -86744529, now seen corresponding path program 1 times [2024-11-16 09:39:34,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:34,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769428977] [2024-11-16 09:39:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:34,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:34,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769428977] [2024-11-16 09:39:34,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769428977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:39:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943861212] [2024-11-16 09:39:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:34,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:39:34,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:39:34,684 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) [2024-11-16 09:39:34,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:39:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:34,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 09:39:34,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:39:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:36,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:39:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:38,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943861212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:39:38,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:39:38,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 33 [2024-11-16 09:39:38,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505898667] [2024-11-16 09:39:38,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:39:38,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 09:39:38,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:38,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 09:39:38,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 09:39:38,113 INFO L87 Difference]: Start difference. First operand 2989 states and 4505 transitions. Second operand has 33 states, 33 states have (on average 6.393939393939394) internal successors, (211), 33 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:42,717 INFO L93 Difference]: Finished difference Result 6596 states and 9262 transitions. [2024-11-16 09:39:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-16 09:39:42,718 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.393939393939394) internal successors, (211), 33 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-16 09:39:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:42,729 INFO L225 Difference]: With dead ends: 6596 [2024-11-16 09:39:42,730 INFO L226 Difference]: Without dead ends: 5911 [2024-11-16 09:39:42,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1482, Invalid=6000, Unknown=0, NotChecked=0, Total=7482 [2024-11-16 09:39:42,735 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 20308 mSDsluCounter, 9481 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20308 SdHoareTripleChecker+Valid, 10978 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:42,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20308 Valid, 10978 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:39:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2024-11-16 09:39:42,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 5876. [2024-11-16 09:39:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 5874 states have (on average 1.402621722846442) internal successors, (8239), 5875 states have internal predecessors, (8239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 8239 transitions. [2024-11-16 09:39:42,864 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 8239 transitions. Word has length 77 [2024-11-16 09:39:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:42,865 INFO L471 AbstractCegarLoop]: Abstraction has 5876 states and 8239 transitions. [2024-11-16 09:39:42,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.393939393939394) internal successors, (211), 33 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:42,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 8239 transitions. [2024-11-16 09:39:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 09:39:42,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:42,866 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:42,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 09:39:43,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:39:43,068 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:43,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1510630993, now seen corresponding path program 1 times [2024-11-16 09:39:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:43,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908500226] [2024-11-16 09:39:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:43,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:43,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908500226] [2024-11-16 09:39:43,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908500226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:39:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062889302] [2024-11-16 09:39:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:43,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:39:43,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:39:43,479 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:39:43,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:39:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:43,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 09:39:43,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:39:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:44,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:39:44,731 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:44,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062889302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:39:44,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:39:44,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-16 09:39:44,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107310308] [2024-11-16 09:39:44,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:39:44,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 09:39:44,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 09:39:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-11-16 09:39:44,733 INFO L87 Difference]: Start difference. First operand 5876 states and 8239 transitions. Second operand has 26 states, 26 states have (on average 7.346153846153846) internal successors, (191), 25 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:46,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:46,146 INFO L93 Difference]: Finished difference Result 20833 states and 27787 transitions. [2024-11-16 09:39:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 09:39:46,147 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.346153846153846) internal successors, (191), 25 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-16 09:39:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:46,175 INFO L225 Difference]: With dead ends: 20833 [2024-11-16 09:39:46,175 INFO L226 Difference]: Without dead ends: 17261 [2024-11-16 09:39:46,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=629, Invalid=2341, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 09:39:46,186 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 15598 mSDsluCounter, 6717 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15598 SdHoareTripleChecker+Valid, 8238 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:46,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15598 Valid, 8238 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 09:39:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17261 states. [2024-11-16 09:39:46,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17261 to 17023. [2024-11-16 09:39:46,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17023 states, 17021 states have (on average 1.3140826038423123) internal successors, (22367), 17022 states have internal predecessors, (22367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17023 states to 17023 states and 22367 transitions. [2024-11-16 09:39:46,718 INFO L78 Accepts]: Start accepts. Automaton has 17023 states and 22367 transitions. Word has length 77 [2024-11-16 09:39:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:46,718 INFO L471 AbstractCegarLoop]: Abstraction has 17023 states and 22367 transitions. [2024-11-16 09:39:46,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.346153846153846) internal successors, (191), 25 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 17023 states and 22367 transitions. [2024-11-16 09:39:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 09:39:46,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:46,721 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:46,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 09:39:46,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-16 09:39:46,922 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:46,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:46,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1994964022, now seen corresponding path program 1 times [2024-11-16 09:39:46,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:46,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605259181] [2024-11-16 09:39:46,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:46,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:49,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605259181] [2024-11-16 09:39:49,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605259181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:39:49,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755630990] [2024-11-16 09:39:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:49,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:39:49,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:39:49,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:39:49,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 09:39:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:49,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-16 09:39:49,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:39:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:54,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:39:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:58,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755630990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:39:58,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:39:58,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 20] total 62 [2024-11-16 09:39:58,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182081114] [2024-11-16 09:39:58,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:39:58,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-16 09:39:58,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:58,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-16 09:39:58,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=3457, Unknown=0, NotChecked=0, Total=3782 [2024-11-16 09:39:58,070 INFO L87 Difference]: Start difference. First operand 17023 states and 22367 transitions. Second operand has 62 states, 62 states have (on average 3.5) internal successors, (217), 62 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)