./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/eca-rers2012/Problem13_label51.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 c60e1c745de50239709fa60c913e491a1f371528f5baa59b32c10ff978467292 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:35:28,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:35:28,393 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:35:28,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:35:28,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:35:28,431 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:35:28,432 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:35:28,432 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:35:28,433 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:35:28,433 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:35:28,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:35:28,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:35:28,434 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:35:28,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:35:28,435 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:35:28,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:35:28,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:35:28,439 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:35:28,440 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:35:28,441 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:35:28,441 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:35:28,442 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:35:28,442 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:35:28,442 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:35:28,443 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:35:28,443 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:35:28,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:35:28,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:35:28,444 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:35:28,445 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:35:28,445 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:35:28,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:35:28,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:35:28,446 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:35:28,446 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:35:28,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:35:28,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:35:28,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:35:28,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:35:28,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:35:28,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:35:28,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:35:28,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c60e1c745de50239709fa60c913e491a1f371528f5baa59b32c10ff978467292 [2024-11-09 19:35:28,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:35:28,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:35:28,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:35:28,778 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:35:28,778 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:35:28,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label51.c [2024-11-09 19:35:30,277 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:35:30,749 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:35:30,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label51.c [2024-11-09 19:35:30,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb7a69c36/6c0d116ad2364f5db740fa3aea34b14c/FLAGd4eb4b4dc [2024-11-09 19:35:30,850 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb7a69c36/6c0d116ad2364f5db740fa3aea34b14c [2024-11-09 19:35:30,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:35:30,854 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:35:30,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:35:30,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:35:30,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:35:30,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:35:30" (1/1) ... [2024-11-09 19:35:30,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727e9cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:30, skipping insertion in model container [2024-11-09 19:35:30,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:35:30" (1/1) ... [2024-11-09 19:35:30,981 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:35:31,287 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/eca-rers2012/Problem13_label51.c[3668,3681] [2024-11-09 19:35:32,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:35:32,244 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:35:32,263 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/eca-rers2012/Problem13_label51.c[3668,3681] [2024-11-09 19:35:32,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:35:32,764 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:35:32,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32 WrapperNode [2024-11-09 19:35:32,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:35:32,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:35:32,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:35:32,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:35:32,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:32,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:33,387 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-09 19:35:33,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:35:33,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:35:33,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:35:33,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:35:33,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:33,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:33,539 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:33,717 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]. [2024-11-09 19:35:33,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:33,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:33,934 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:34,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:34,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:34,098 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:34,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:35:34,176 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:35:34,177 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:35:34,177 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:35:34,178 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (1/1) ... [2024-11-09 19:35:34,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:35:34,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:35:34,212 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) [2024-11-09 19:35:34,214 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 [2024-11-09 19:35:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:35:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:35:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:35:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:35:34,312 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:35:34,315 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:35:40,748 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-09 19:35:40,749 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:35:40,750 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:35:41,218 INFO L? ?]: Removed 2111 outVars from TransFormulas that were not future-live. [2024-11-09 19:35:41,218 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:35:41,264 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:35:41,265 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:35:41,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:35:41 BoogieIcfgContainer [2024-11-09 19:35:41,265 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:35:41,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:35:41,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:35:41,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:35:41,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:35:30" (1/3) ... [2024-11-09 19:35:41,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4b1676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:35:41, skipping insertion in model container [2024-11-09 19:35:41,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:35:32" (2/3) ... [2024-11-09 19:35:41,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4b1676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:35:41, skipping insertion in model container [2024-11-09 19:35:41,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:35:41" (3/3) ... [2024-11-09 19:35:41,277 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label51.c [2024-11-09 19:35:41,294 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:35:41,295 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:35:41,419 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:35:41,428 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;@1c5fa402, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:35:41,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:35:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1099 states have (on average 2.4767970882620562) internal successors, (2722), 1100 states have internal predecessors, (2722), 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) [2024-11-09 19:35:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 19:35:41,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:41,449 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] [2024-11-09 19:35:41,450 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:41,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1520953437, now seen corresponding path program 1 times [2024-11-09 19:35:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110932874] [2024-11-09 19:35:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:41,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:35:41,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:41,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110932874] [2024-11-09 19:35:41,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110932874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:41,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:41,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:35:41,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147213268] [2024-11-09 19:35:41,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:41,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:41,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:41,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:41,822 INFO L87 Difference]: Start difference. First operand has 1101 states, 1099 states have (on average 2.4767970882620562) internal successors, (2722), 1100 states have internal predecessors, (2722), 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 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-11-09 19:35:47,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:47,398 INFO L93 Difference]: Finished difference Result 3153 states and 7960 transitions. [2024-11-09 19:35:47,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:35:47,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2024-11-09 19:35:47,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:47,432 INFO L225 Difference]: With dead ends: 3153 [2024-11-09 19:35:47,432 INFO L226 Difference]: Without dead ends: 1967 [2024-11-09 19:35:47,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:47,441 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1871 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 4146 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 4730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 4146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:47,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1871 Valid, 995 Invalid, 4730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 4146 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-09 19:35:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2024-11-09 19:35:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1954. [2024-11-09 19:35:47,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1953 states have (on average 2.3860727086533537) internal successors, (4660), 1953 states have internal predecessors, (4660), 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) [2024-11-09 19:35:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 4660 transitions. [2024-11-09 19:35:47,582 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 4660 transitions. Word has length 26 [2024-11-09 19:35:47,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:47,583 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 4660 transitions. [2024-11-09 19:35:47,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-11-09 19:35:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 4660 transitions. [2024-11-09 19:35:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 19:35:47,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:47,586 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:35:47,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:35:47,587 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:47,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:47,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1924464159, now seen corresponding path program 1 times [2024-11-09 19:35:47,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:47,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450506223] [2024-11-09 19:35:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:35:47,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:47,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450506223] [2024-11-09 19:35:47,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450506223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:47,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:47,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:35:47,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974314984] [2024-11-09 19:35:47,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:47,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:47,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:47,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:47,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:47,892 INFO L87 Difference]: Start difference. First operand 1954 states and 4660 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2024-11-09 19:35:52,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:52,552 INFO L93 Difference]: Finished difference Result 5551 states and 13527 transitions. [2024-11-09 19:35:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:35:52,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2024-11-09 19:35:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:52,570 INFO L225 Difference]: With dead ends: 5551 [2024-11-09 19:35:52,570 INFO L226 Difference]: Without dead ends: 3599 [2024-11-09 19:35:52,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:52,574 INFO L432 NwaCegarLoop]: 877 mSDtfsCounter, 1641 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4024 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 4773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 4024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:52,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 1016 Invalid, 4773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 4024 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-09 19:35:52,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2024-11-09 19:35:52,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3586. [2024-11-09 19:35:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 2.303207810320781) internal successors, (8257), 3585 states have internal predecessors, (8257), 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) [2024-11-09 19:35:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 8257 transitions. [2024-11-09 19:35:52,656 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 8257 transitions. Word has length 98 [2024-11-09 19:35:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:52,658 INFO L471 AbstractCegarLoop]: Abstraction has 3586 states and 8257 transitions. [2024-11-09 19:35:52,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2024-11-09 19:35:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 8257 transitions. [2024-11-09 19:35:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 19:35:52,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:52,664 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:35:52,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:35:52,664 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:52,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:52,669 INFO L85 PathProgramCache]: Analyzing trace with hash -365889965, now seen corresponding path program 1 times [2024-11-09 19:35:52,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:52,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810896249] [2024-11-09 19:35:52,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:52,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:35:52,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:52,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810896249] [2024-11-09 19:35:52,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810896249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:52,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:52,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:35:52,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417537866] [2024-11-09 19:35:52,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:52,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:52,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:52,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:52,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:52,898 INFO L87 Difference]: Start difference. First operand 3586 states and 8257 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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) [2024-11-09 19:35:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:35:57,387 INFO L93 Difference]: Finished difference Result 10415 states and 24290 transitions. [2024-11-09 19:35:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:35:57,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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 112 [2024-11-09 19:35:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:35:57,418 INFO L225 Difference]: With dead ends: 10415 [2024-11-09 19:35:57,418 INFO L226 Difference]: Without dead ends: 6831 [2024-11-09 19:35:57,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:57,425 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 1645 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4306 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 4863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 4306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:35:57,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 598 Invalid, 4863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 4306 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 19:35:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6831 states. [2024-11-09 19:35:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6831 to 6818. [2024-11-09 19:35:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6818 states, 6817 states have (on average 2.2741675223705444) internal successors, (15503), 6817 states have internal predecessors, (15503), 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) [2024-11-09 19:35:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6818 states to 6818 states and 15503 transitions. [2024-11-09 19:35:57,564 INFO L78 Accepts]: Start accepts. Automaton has 6818 states and 15503 transitions. Word has length 112 [2024-11-09 19:35:57,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:35:57,564 INFO L471 AbstractCegarLoop]: Abstraction has 6818 states and 15503 transitions. [2024-11-09 19:35:57,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 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) [2024-11-09 19:35:57,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6818 states and 15503 transitions. [2024-11-09 19:35:57,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 19:35:57,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:35:57,567 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:35:57,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:35:57,567 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:35:57,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:35:57,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2096072483, now seen corresponding path program 1 times [2024-11-09 19:35:57,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:35:57,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321727518] [2024-11-09 19:35:57,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:35:57,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:35:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:35:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:35:57,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:35:57,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321727518] [2024-11-09 19:35:57,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321727518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:35:57,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:35:57,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:35:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290164298] [2024-11-09 19:35:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:35:57,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:35:57,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:35:57,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:35:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:35:57,779 INFO L87 Difference]: Start difference. First operand 6818 states and 15503 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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) [2024-11-09 19:36:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:36:02,111 INFO L93 Difference]: Finished difference Result 19975 states and 45863 transitions. [2024-11-09 19:36:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:36:02,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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 128 [2024-11-09 19:36:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:36:02,161 INFO L225 Difference]: With dead ends: 19975 [2024-11-09 19:36:02,161 INFO L226 Difference]: Without dead ends: 13159 [2024-11-09 19:36:02,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:36:02,173 INFO L432 NwaCegarLoop]: 962 mSDtfsCounter, 1495 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 797 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 4685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 797 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:36:02,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1115 Invalid, 4685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [797 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-09 19:36:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13159 states. [2024-11-09 19:36:02,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13159 to 13131. [2024-11-09 19:36:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13131 states, 13130 states have (on average 2.147829398324448) internal successors, (28201), 13130 states have internal predecessors, (28201), 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) [2024-11-09 19:36:02,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13131 states to 13131 states and 28201 transitions. [2024-11-09 19:36:02,523 INFO L78 Accepts]: Start accepts. Automaton has 13131 states and 28201 transitions. Word has length 128 [2024-11-09 19:36:02,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:36:02,523 INFO L471 AbstractCegarLoop]: Abstraction has 13131 states and 28201 transitions. [2024-11-09 19:36:02,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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) [2024-11-09 19:36:02,524 INFO L276 IsEmpty]: Start isEmpty. Operand 13131 states and 28201 transitions. [2024-11-09 19:36:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-09 19:36:02,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:36:02,528 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:36:02,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:36:02,528 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:36:02,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:36:02,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2001256807, now seen corresponding path program 1 times [2024-11-09 19:36:02,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:36:02,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581887862] [2024-11-09 19:36:02,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:36:02,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:36:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:36:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 19:36:03,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:36:03,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581887862] [2024-11-09 19:36:03,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581887862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:36:03,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:36:03,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:36:03,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031418134] [2024-11-09 19:36:03,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:36:03,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:36:03,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:36:03,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:36:03,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:36:03,092 INFO L87 Difference]: Start difference. First operand 13131 states and 28201 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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) [2024-11-09 19:36:07,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:36:07,076 INFO L93 Difference]: Finished difference Result 25472 states and 54871 transitions. [2024-11-09 19:36:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:36:07,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 220 [2024-11-09 19:36:07,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:36:07,108 INFO L225 Difference]: With dead ends: 25472 [2024-11-09 19:36:07,108 INFO L226 Difference]: Without dead ends: 13131 [2024-11-09 19:36:07,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:36:07,118 INFO L432 NwaCegarLoop]: 1087 mSDtfsCounter, 1416 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3964 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 3978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:36:07,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 1218 Invalid, 3978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3964 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 19:36:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13131 states. [2024-11-09 19:36:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13131 to 13131. [2024-11-09 19:36:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13131 states, 13130 states have (on average 2.1466869763899465) internal successors, (28186), 13130 states have internal predecessors, (28186), 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) [2024-11-09 19:36:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13131 states to 13131 states and 28186 transitions. [2024-11-09 19:36:07,317 INFO L78 Accepts]: Start accepts. Automaton has 13131 states and 28186 transitions. Word has length 220 [2024-11-09 19:36:07,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:36:07,317 INFO L471 AbstractCegarLoop]: Abstraction has 13131 states and 28186 transitions. [2024-11-09 19:36:07,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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) [2024-11-09 19:36:07,318 INFO L276 IsEmpty]: Start isEmpty. Operand 13131 states and 28186 transitions. [2024-11-09 19:36:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-09 19:36:07,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:36:07,321 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:36:07,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:36:07,321 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:36:07,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:36:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash 893698309, now seen corresponding path program 1 times [2024-11-09 19:36:07,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:36:07,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72275943] [2024-11-09 19:36:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:36:07,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:36:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:36:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:36:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:36:07,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72275943] [2024-11-09 19:36:07,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72275943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:36:07,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:36:07,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:36:07,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677964830] [2024-11-09 19:36:07,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:36:07,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:36:07,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:36:07,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:36:07,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:36:07,579 INFO L87 Difference]: Start difference. First operand 13131 states and 28186 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 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) [2024-11-09 19:36:16,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:36:16,904 INFO L93 Difference]: Finished difference Result 45463 states and 99183 transitions. [2024-11-09 19:36:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:36:16,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 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 225 [2024-11-09 19:36:16,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:36:16,980 INFO L225 Difference]: With dead ends: 45463 [2024-11-09 19:36:16,981 INFO L226 Difference]: Without dead ends: 33122 [2024-11-09 19:36:16,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:36:16,999 INFO L432 NwaCegarLoop]: 980 mSDtfsCounter, 3043 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 10323 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 10935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 10323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:36:16,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 1269 Invalid, 10935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 10323 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-09 19:36:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33122 states. [2024-11-09 19:36:17,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33122 to 32899. [2024-11-09 19:36:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32899 states, 32898 states have (on average 2.1241108881998905) internal successors, (69879), 32898 states have internal predecessors, (69879), 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) [2024-11-09 19:36:17,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32899 states to 32899 states and 69879 transitions. [2024-11-09 19:36:17,477 INFO L78 Accepts]: Start accepts. Automaton has 32899 states and 69879 transitions. Word has length 225 [2024-11-09 19:36:17,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:36:17,477 INFO L471 AbstractCegarLoop]: Abstraction has 32899 states and 69879 transitions. [2024-11-09 19:36:17,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 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) [2024-11-09 19:36:17,478 INFO L276 IsEmpty]: Start isEmpty. Operand 32899 states and 69879 transitions. [2024-11-09 19:36:17,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-09 19:36:17,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:36:17,483 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:36:17,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:36:17,483 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:36:17,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:36:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash -128492948, now seen corresponding path program 1 times [2024-11-09 19:36:17,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:36:17,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402038378] [2024-11-09 19:36:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:36:17,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:36:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:36:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:36:17,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:36:17,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402038378] [2024-11-09 19:36:17,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402038378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:36:17,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:36:17,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:36:17,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617752275] [2024-11-09 19:36:17,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:36:17,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:36:17,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:36:17,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:36:17,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:36:17,694 INFO L87 Difference]: Start difference. First operand 32899 states and 69879 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2024-11-09 19:36:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:36:22,106 INFO L93 Difference]: Finished difference Result 80000 states and 172394 transitions. [2024-11-09 19:36:22,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:36:22,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 227 [2024-11-09 19:36:22,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:36:22,185 INFO L225 Difference]: With dead ends: 80000 [2024-11-09 19:36:22,185 INFO L226 Difference]: Without dead ends: 47891 [2024-11-09 19:36:22,218 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 [2024-11-09 19:36:22,219 INFO L432 NwaCegarLoop]: 936 mSDtfsCounter, 1552 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 3865 mSolverCounterSat, 891 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 4756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 3865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:36:22,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 1060 Invalid, 4756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 3865 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-09 19:36:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47891 states. [2024-11-09 19:36:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47891 to 47879. [2024-11-09 19:36:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47879 states, 47878 states have (on average 2.1109277747608504) internal successors, (101067), 47878 states have internal predecessors, (101067), 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) [2024-11-09 19:36:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47879 states to 47879 states and 101067 transitions. [2024-11-09 19:36:23,227 INFO L78 Accepts]: Start accepts. Automaton has 47879 states and 101067 transitions. Word has length 227 [2024-11-09 19:36:23,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:36:23,228 INFO L471 AbstractCegarLoop]: Abstraction has 47879 states and 101067 transitions. [2024-11-09 19:36:23,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2024-11-09 19:36:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 47879 states and 101067 transitions. [2024-11-09 19:36:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-09 19:36:23,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:36:23,232 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:36:23,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:36:23,233 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:36:23,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:36:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1411050372, now seen corresponding path program 1 times [2024-11-09 19:36:23,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:36:23,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402897656] [2024-11-09 19:36:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:36:23,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:36:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:36:23,673 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:36:23,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:36:23,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402897656] [2024-11-09 19:36:23,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402897656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:36:23,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:36:23,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:36:23,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890835372] [2024-11-09 19:36:23,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:36:23,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:36:23,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:36:23,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:36:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:36:23,676 INFO L87 Difference]: Start difference. First operand 47879 states and 101067 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2024-11-09 19:36:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:36:28,159 INFO L93 Difference]: Finished difference Result 94783 states and 200362 transitions. [2024-11-09 19:36:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:36:28,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 242 [2024-11-09 19:36:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:36:28,361 INFO L225 Difference]: With dead ends: 94783 [2024-11-09 19:36:28,361 INFO L226 Difference]: Without dead ends: 47694 [2024-11-09 19:36:28,392 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 [2024-11-09 19:36:28,395 INFO L432 NwaCegarLoop]: 2228 mSDtfsCounter, 1755 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 4384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:36:28,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 2373 Invalid, 4384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 3779 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 19:36:28,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47694 states. [2024-11-09 19:36:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47694 to 47688. [2024-11-09 19:36:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47688 states, 47687 states have (on average 2.045756705181706) internal successors, (97556), 47687 states have internal predecessors, (97556), 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) [2024-11-09 19:36:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47688 states to 47688 states and 97556 transitions. [2024-11-09 19:36:29,283 INFO L78 Accepts]: Start accepts. Automaton has 47688 states and 97556 transitions. Word has length 242 [2024-11-09 19:36:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:36:29,284 INFO L471 AbstractCegarLoop]: Abstraction has 47688 states and 97556 transitions. [2024-11-09 19:36:29,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2024-11-09 19:36:29,284 INFO L276 IsEmpty]: Start isEmpty. Operand 47688 states and 97556 transitions. [2024-11-09 19:36:29,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-09 19:36:29,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:36:29,288 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:36:29,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:36:29,288 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:36:29,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:36:29,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2113978762, now seen corresponding path program 1 times [2024-11-09 19:36:29,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:36:29,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387633657] [2024-11-09 19:36:29,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:36:29,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:36:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:36:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 19:36:29,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:36:29,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387633657] [2024-11-09 19:36:29,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387633657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:36:29,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:36:29,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:36:29,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703192150] [2024-11-09 19:36:29,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:36:29,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:36:29,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:36:29,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:36:29,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:36:29,742 INFO L87 Difference]: Start difference. First operand 47688 states and 97556 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2024-11-09 19:36:34,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:36:34,567 INFO L93 Difference]: Finished difference Result 126097 states and 259260 transitions. [2024-11-09 19:36:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:36:34,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 258 [2024-11-09 19:36:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:36:34,688 INFO L225 Difference]: With dead ends: 126097 [2024-11-09 19:36:34,688 INFO L226 Difference]: Without dead ends: 79199 [2024-11-09 19:36:34,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:36:34,717 INFO L432 NwaCegarLoop]: 848 mSDtfsCounter, 1561 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 3749 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 4613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 3749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:36:34,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 986 Invalid, 4613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 3749 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 19:36:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79199 states. [2024-11-09 19:36:35,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79199 to 73676. [2024-11-09 19:36:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73676 states, 73675 states have (on average 2.022721411605022) internal successors, (149024), 73675 states have internal predecessors, (149024), 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) [2024-11-09 19:36:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73676 states to 73676 states and 149024 transitions. [2024-11-09 19:36:36,119 INFO L78 Accepts]: Start accepts. Automaton has 73676 states and 149024 transitions. Word has length 258 [2024-11-09 19:36:36,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:36:36,120 INFO L471 AbstractCegarLoop]: Abstraction has 73676 states and 149024 transitions. [2024-11-09 19:36:36,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2024-11-09 19:36:36,120 INFO L276 IsEmpty]: Start isEmpty. Operand 73676 states and 149024 transitions. [2024-11-09 19:36:36,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-09 19:36:36,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:36:36,125 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:36:36,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:36:36,126 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:36:36,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:36:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2127416618, now seen corresponding path program 1 times [2024-11-09 19:36:36,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:36:36,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346644544] [2024-11-09 19:36:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:36:36,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:36:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:36:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 19:36:36,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:36:36,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346644544] [2024-11-09 19:36:36,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346644544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:36:36,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:36:36,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:36:36,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108045248] [2024-11-09 19:36:36,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:36:36,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:36:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:36:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:36:36,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:36:36,543 INFO L87 Difference]: Start difference. First operand 73676 states and 149024 transitions. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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) [2024-11-09 19:36:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:36:45,368 INFO L93 Difference]: Finished difference Result 198778 states and 402802 transitions. [2024-11-09 19:36:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:36:45,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 3 states have internal predecessors, (295), 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 317 [2024-11-09 19:36:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:36:45,792 INFO L225 Difference]: With dead ends: 198778 [2024-11-09 19:36:45,792 INFO L226 Difference]: Without dead ends: 125892 [2024-11-09 19:36:45,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:36:45,846 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 3135 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 9496 mSolverCounterSat, 1038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3135 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 10534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 9496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:36:45,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3135 Valid, 815 Invalid, 10534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 9496 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-09 19:36:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125892 states.