./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label33.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 f1d6c7224567b6057eecb8e0076a48aebc20a409238cb7be9c0543149a96c59f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:18:46,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:18:46,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:18:46,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:18:46,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:18:46,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:18:46,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:18:46,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:18:46,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:18:46,281 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:18:46,281 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:18:46,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:18:46,282 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:18:46,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:18:46,284 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:18:46,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:18:46,284 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:18:46,285 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:18:46,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:18:46,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:18:46,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:18:46,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:18:46,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:18:46,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:18:46,288 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:18:46,288 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:18:46,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:18:46,289 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:18:46,289 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:18:46,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:18:46,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:18:46,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:18:46,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:18:46,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:18:46,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:18:46,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:18:46,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:18:46,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:18:46,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:18:46,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:18:46,295 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:18:46,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:18:46,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1d6c7224567b6057eecb8e0076a48aebc20a409238cb7be9c0543149a96c59f [2024-11-16 04:18:46,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:18:46,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:18:46,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:18:46,610 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:18:46,610 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:18:46,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label33.c [2024-11-16 04:18:48,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:18:48,441 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:18:48,442 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label33.c [2024-11-16 04:18:48,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1905c47fd/d8dfd2282cc1411b9aa51289eb0c54f0/FLAG682e433e5 [2024-11-16 04:18:48,489 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1905c47fd/d8dfd2282cc1411b9aa51289eb0c54f0 [2024-11-16 04:18:48,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:18:48,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:18:48,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:18:48,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:18:48,503 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:18:48,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:18:48" (1/1) ... [2024-11-16 04:18:48,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d961d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:48, skipping insertion in model container [2024-11-16 04:18:48,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:18:48" (1/1) ... [2024-11-16 04:18:48,587 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:18:48,863 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/Problem17_label33.c[2518,2531] [2024-11-16 04:18:49,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:18:49,505 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:18:49,520 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/Problem17_label33.c[2518,2531] [2024-11-16 04:18:49,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:18:49,777 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:18:49,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49 WrapperNode [2024-11-16 04:18:49,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:18:49,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:18:49,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:18:49,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:18:49,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:49,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,054 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-16 04:18:50,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:18:50,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:18:50,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:18:50,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:18:50,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,099 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,277 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 04:18:50,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,471 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,607 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:18:50,609 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:18:50,609 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:18:50,610 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:18:50,610 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (1/1) ... [2024-11-16 04:18:50,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:18:50,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:18:50,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 04:18:50,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 04:18:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:18:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:18:50,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:18:50,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:18:50,751 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:18:50,754 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:18:53,896 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-16 04:18:54,048 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-16 04:18:54,049 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:18:54,086 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:18:54,087 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:18:54,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:18:54 BoogieIcfgContainer [2024-11-16 04:18:54,087 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:18:54,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:18:54,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:18:54,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:18:54,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:18:48" (1/3) ... [2024-11-16 04:18:54,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a485d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:54, skipping insertion in model container [2024-11-16 04:18:54,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:49" (2/3) ... [2024-11-16 04:18:54,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a485d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:54, skipping insertion in model container [2024-11-16 04:18:54,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:18:54" (3/3) ... [2024-11-16 04:18:54,098 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label33.c [2024-11-16 04:18:54,114 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:18:54,115 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:18:54,206 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:18:54,216 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;@686063a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:18:54,216 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:18:54,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:18:54,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-16 04:18:54,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:54,232 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:54,233 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:54,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:54,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1541950025, now seen corresponding path program 1 times [2024-11-16 04:18:54,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:54,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625253705] [2024-11-16 04:18:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:54,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:18:54,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:54,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625253705] [2024-11-16 04:18:54,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625253705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:54,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:54,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:18:54,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933068456] [2024-11-16 04:18:54,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:54,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:54,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:54,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:54,592 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 1.8020304568527918) internal successors, (1065), 592 states have internal predecessors, (1065), 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 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:18:57,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:57,100 INFO L93 Difference]: Finished difference Result 1650 states and 3035 transitions. [2024-11-16 04:18:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:57,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2024-11-16 04:18:57,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:57,119 INFO L225 Difference]: With dead ends: 1650 [2024-11-16 04:18:57,119 INFO L226 Difference]: Without dead ends: 980 [2024-11-16 04:18:57,124 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 [2024-11-16 04:18:57,127 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 472 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:57,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 507 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-16 04:18:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-16 04:18:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 974. [2024-11-16 04:18:57,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 1.551901336073998) internal successors, (1510), 973 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:18:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1510 transitions. [2024-11-16 04:18:57,235 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1510 transitions. Word has length 18 [2024-11-16 04:18:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:57,235 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1510 transitions. [2024-11-16 04:18:57,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:18:57,236 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1510 transitions. [2024-11-16 04:18:57,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 04:18:57,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:57,238 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:57,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:18:57,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:57,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash 32753976, now seen corresponding path program 1 times [2024-11-16 04:18:57,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727535232] [2024-11-16 04:18:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:18:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:18:57,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:18:57,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727535232] [2024-11-16 04:18:57,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727535232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:18:57,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:18:57,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:18:57,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711311954] [2024-11-16 04:18:57,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:18:57,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:18:57,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:18:57,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:18:57,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:18:57,493 INFO L87 Difference]: Start difference. First operand 974 states and 1510 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:18:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:18:59,648 INFO L93 Difference]: Finished difference Result 2821 states and 4389 transitions. [2024-11-16 04:18:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:18:59,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2024-11-16 04:18:59,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:18:59,656 INFO L225 Difference]: With dead ends: 2821 [2024-11-16 04:18:59,657 INFO L226 Difference]: Without dead ends: 1849 [2024-11-16 04:18:59,661 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 [2024-11-16 04:18:59,662 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 405 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 04:18:59,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 584 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 04:18:59,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-16 04:18:59,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1846. [2024-11-16 04:18:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 1.3490514905149051) internal successors, (2489), 1845 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:18:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2489 transitions. [2024-11-16 04:18:59,705 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2489 transitions. Word has length 86 [2024-11-16 04:18:59,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:18:59,706 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 2489 transitions. [2024-11-16 04:18:59,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:18:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2489 transitions. [2024-11-16 04:18:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 04:18:59,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:18:59,711 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:18:59,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:18:59,712 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:18:59,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:18:59,713 INFO L85 PathProgramCache]: Analyzing trace with hash -573846428, now seen corresponding path program 1 times [2024-11-16 04:18:59,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:18:59,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566472092] [2024-11-16 04:18:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:18:59,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:18:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:00,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:00,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566472092] [2024-11-16 04:19:00,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566472092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:00,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:00,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:00,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729419414] [2024-11-16 04:19:00,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:00,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:00,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:00,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:00,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:00,049 INFO L87 Difference]: Start difference. First operand 1846 states and 2489 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:03,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:03,413 INFO L93 Difference]: Finished difference Result 6782 states and 9275 transitions. [2024-11-16 04:19:03,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:03,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2024-11-16 04:19:03,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:03,433 INFO L225 Difference]: With dead ends: 6782 [2024-11-16 04:19:03,433 INFO L226 Difference]: Without dead ends: 4938 [2024-11-16 04:19:03,438 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 [2024-11-16 04:19:03,439 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 950 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:03,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 292 Invalid, 3289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-16 04:19:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2024-11-16 04:19:03,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4887. [2024-11-16 04:19:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4887 states, 4886 states have (on average 1.2857142857142858) internal successors, (6282), 4886 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4887 states to 4887 states and 6282 transitions. [2024-11-16 04:19:03,526 INFO L78 Accepts]: Start accepts. Automaton has 4887 states and 6282 transitions. Word has length 89 [2024-11-16 04:19:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:03,527 INFO L471 AbstractCegarLoop]: Abstraction has 4887 states and 6282 transitions. [2024-11-16 04:19:03,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4887 states and 6282 transitions. [2024-11-16 04:19:03,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-16 04:19:03,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:03,530 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:03,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 04:19:03,531 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:03,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:03,532 INFO L85 PathProgramCache]: Analyzing trace with hash 764708489, now seen corresponding path program 1 times [2024-11-16 04:19:03,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:03,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637113676] [2024-11-16 04:19:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:03,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-16 04:19:03,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:03,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637113676] [2024-11-16 04:19:03,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637113676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:03,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:03,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:19:03,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143306777] [2024-11-16 04:19:03,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:03,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:03,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:03,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:03,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:03,861 INFO L87 Difference]: Start difference. First operand 4887 states and 6282 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:05,511 INFO L93 Difference]: Finished difference Result 14471 states and 18576 transitions. [2024-11-16 04:19:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:05,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 161 [2024-11-16 04:19:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:05,536 INFO L225 Difference]: With dead ends: 14471 [2024-11-16 04:19:05,536 INFO L226 Difference]: Without dead ends: 8297 [2024-11-16 04:19:05,545 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 [2024-11-16 04:19:05,546 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 387 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:05,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 592 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:19:05,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2024-11-16 04:19:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 6162. [2024-11-16 04:19:05,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6162 states, 6161 states have (on average 1.190228858951469) internal successors, (7333), 6161 states have internal predecessors, (7333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6162 states to 6162 states and 7333 transitions. [2024-11-16 04:19:05,660 INFO L78 Accepts]: Start accepts. Automaton has 6162 states and 7333 transitions. Word has length 161 [2024-11-16 04:19:05,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:05,661 INFO L471 AbstractCegarLoop]: Abstraction has 6162 states and 7333 transitions. [2024-11-16 04:19:05,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 6162 states and 7333 transitions. [2024-11-16 04:19:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-16 04:19:05,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:05,666 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:05,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 04:19:05,666 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:05,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:05,667 INFO L85 PathProgramCache]: Analyzing trace with hash -230648301, now seen corresponding path program 1 times [2024-11-16 04:19:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:05,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023834240] [2024-11-16 04:19:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:05,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-16 04:19:05,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:05,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023834240] [2024-11-16 04:19:05,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023834240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:05,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:05,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:05,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256382851] [2024-11-16 04:19:05,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:05,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:05,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:05,822 INFO L87 Difference]: Start difference. First operand 6162 states and 7333 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:07,609 INFO L93 Difference]: Finished difference Result 15730 states and 18935 transitions. [2024-11-16 04:19:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:07,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 174 [2024-11-16 04:19:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:07,638 INFO L225 Difference]: With dead ends: 15730 [2024-11-16 04:19:07,638 INFO L226 Difference]: Without dead ends: 9570 [2024-11-16 04:19:07,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:07,648 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 444 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:07,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 481 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:19:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9570 states. [2024-11-16 04:19:07,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9570 to 6139. [2024-11-16 04:19:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6139 states, 6138 states have (on average 1.1889866405995437) internal successors, (7298), 6138 states have internal predecessors, (7298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 7298 transitions. [2024-11-16 04:19:07,770 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 7298 transitions. Word has length 174 [2024-11-16 04:19:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:07,771 INFO L471 AbstractCegarLoop]: Abstraction has 6139 states and 7298 transitions. [2024-11-16 04:19:07,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 7298 transitions. [2024-11-16 04:19:07,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-16 04:19:07,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:07,774 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:07,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 04:19:07,774 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:07,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:07,775 INFO L85 PathProgramCache]: Analyzing trace with hash 883514413, now seen corresponding path program 1 times [2024-11-16 04:19:07,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:07,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566287347] [2024-11-16 04:19:07,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:07,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:07,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:07,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566287347] [2024-11-16 04:19:07,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566287347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:07,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:07,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:07,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497799673] [2024-11-16 04:19:07,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:07,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:07,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:07,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:07,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:07,984 INFO L87 Difference]: Start difference. First operand 6139 states and 7298 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:09,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:09,636 INFO L93 Difference]: Finished difference Result 16117 states and 19483 transitions. [2024-11-16 04:19:09,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:09,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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 181 [2024-11-16 04:19:09,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:09,669 INFO L225 Difference]: With dead ends: 16117 [2024-11-16 04:19:09,669 INFO L226 Difference]: Without dead ends: 9980 [2024-11-16 04:19:09,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:09,676 INFO L432 NwaCegarLoop]: 737 mSDtfsCounter, 487 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:09,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 793 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:19:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9980 states. [2024-11-16 04:19:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9980 to 9980. [2024-11-16 04:19:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9980 states, 9979 states have (on average 1.1712596452550357) internal successors, (11688), 9979 states have internal predecessors, (11688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9980 states to 9980 states and 11688 transitions. [2024-11-16 04:19:09,804 INFO L78 Accepts]: Start accepts. Automaton has 9980 states and 11688 transitions. Word has length 181 [2024-11-16 04:19:09,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:09,805 INFO L471 AbstractCegarLoop]: Abstraction has 9980 states and 11688 transitions. [2024-11-16 04:19:09,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:09,805 INFO L276 IsEmpty]: Start isEmpty. Operand 9980 states and 11688 transitions. [2024-11-16 04:19:09,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-16 04:19:09,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:09,808 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:09,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 04:19:09,808 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:09,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:09,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1717819738, now seen corresponding path program 1 times [2024-11-16 04:19:09,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:09,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423378576] [2024-11-16 04:19:09,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:09,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 170 proven. 71 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 04:19:10,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:10,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423378576] [2024-11-16 04:19:10,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423378576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:10,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104821369] [2024-11-16 04:19:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:10,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:19:10,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:19:10,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:19:10,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 04:19:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:10,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:19:10,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:19:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 170 proven. 71 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 04:19:10,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:19:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 04:19:10,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104821369] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:10,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:19:10,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:19:10,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122176396] [2024-11-16 04:19:10,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:10,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:10,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:19:10,930 INFO L87 Difference]: Start difference. First operand 9980 states and 11688 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:13,651 INFO L93 Difference]: Finished difference Result 30648 states and 36240 transitions. [2024-11-16 04:19:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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 245 [2024-11-16 04:19:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:13,684 INFO L225 Difference]: With dead ends: 30648 [2024-11-16 04:19:13,684 INFO L226 Difference]: Without dead ends: 19810 [2024-11-16 04:19:13,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:19:13,699 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 890 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:13,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 166 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-16 04:19:13,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19810 states. [2024-11-16 04:19:13,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19810 to 19807. [2024-11-16 04:19:13,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19807 states, 19806 states have (on average 1.1595981015853782) internal successors, (22967), 19806 states have internal predecessors, (22967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19807 states to 19807 states and 22967 transitions. [2024-11-16 04:19:13,979 INFO L78 Accepts]: Start accepts. Automaton has 19807 states and 22967 transitions. Word has length 245 [2024-11-16 04:19:13,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:13,979 INFO L471 AbstractCegarLoop]: Abstraction has 19807 states and 22967 transitions. [2024-11-16 04:19:13,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:13,980 INFO L276 IsEmpty]: Start isEmpty. Operand 19807 states and 22967 transitions. [2024-11-16 04:19:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-16 04:19:13,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:13,984 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:14,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 04:19:14,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:19:14,187 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:14,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:14,187 INFO L85 PathProgramCache]: Analyzing trace with hash 422188490, now seen corresponding path program 1 times [2024-11-16 04:19:14,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:14,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400622780] [2024-11-16 04:19:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:14,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-16 04:19:14,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:14,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400622780] [2024-11-16 04:19:14,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400622780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:14,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:14,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:14,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445763709] [2024-11-16 04:19:14,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:14,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:14,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:14,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:14,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:14,524 INFO L87 Difference]: Start difference. First operand 19807 states and 22967 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:16,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:16,311 INFO L93 Difference]: Finished difference Result 43011 states and 50091 transitions. [2024-11-16 04:19:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:16,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 [2024-11-16 04:19:16,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:16,352 INFO L225 Difference]: With dead ends: 43011 [2024-11-16 04:19:16,352 INFO L226 Difference]: Without dead ends: 22779 [2024-11-16 04:19:16,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:16,375 INFO L432 NwaCegarLoop]: 830 mSDtfsCounter, 372 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:16,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 903 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 04:19:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22779 states. [2024-11-16 04:19:16,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22779 to 22779. [2024-11-16 04:19:16,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22779 states, 22778 states have (on average 1.136140135218193) internal successors, (25879), 22778 states have internal predecessors, (25879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22779 states to 22779 states and 25879 transitions. [2024-11-16 04:19:16,758 INFO L78 Accepts]: Start accepts. Automaton has 22779 states and 25879 transitions. Word has length 258 [2024-11-16 04:19:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:16,758 INFO L471 AbstractCegarLoop]: Abstraction has 22779 states and 25879 transitions. [2024-11-16 04:19:16,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:16,759 INFO L276 IsEmpty]: Start isEmpty. Operand 22779 states and 25879 transitions. [2024-11-16 04:19:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-16 04:19:16,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:16,765 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:16,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 04:19:16,765 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:16,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1703325552, now seen corresponding path program 1 times [2024-11-16 04:19:16,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:16,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014139564] [2024-11-16 04:19:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:16,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-16 04:19:17,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:17,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014139564] [2024-11-16 04:19:17,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014139564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:17,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:17,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:17,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927917390] [2024-11-16 04:19:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:17,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:17,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:17,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:17,069 INFO L87 Difference]: Start difference. First operand 22779 states and 25879 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:18,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:18,779 INFO L93 Difference]: Finished difference Result 56212 states and 63768 transitions. [2024-11-16 04:19:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:18,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 293 [2024-11-16 04:19:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:18,826 INFO L225 Difference]: With dead ends: 56212 [2024-11-16 04:19:18,826 INFO L226 Difference]: Without dead ends: 33001 [2024-11-16 04:19:18,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:18,850 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 453 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:18,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 422 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 04:19:18,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33001 states. [2024-11-16 04:19:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33001 to 30440. [2024-11-16 04:19:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30440 states, 30439 states have (on average 1.1218174053024081) internal successors, (34147), 30439 states have internal predecessors, (34147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30440 states to 30440 states and 34147 transitions. [2024-11-16 04:19:19,330 INFO L78 Accepts]: Start accepts. Automaton has 30440 states and 34147 transitions. Word has length 293 [2024-11-16 04:19:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:19,331 INFO L471 AbstractCegarLoop]: Abstraction has 30440 states and 34147 transitions. [2024-11-16 04:19:19,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 30440 states and 34147 transitions. [2024-11-16 04:19:19,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-16 04:19:19,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:19,337 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-16 04:19:19,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 04:19:19,337 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:19,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:19,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1168710988, now seen corresponding path program 1 times [2024-11-16 04:19:19,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:19,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659295510] [2024-11-16 04:19:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-16 04:19:19,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659295510] [2024-11-16 04:19:19,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659295510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:19,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:19,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:19,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862486424] [2024-11-16 04:19:19,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:19,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:19,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:19,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:19,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:19,575 INFO L87 Difference]: Start difference. First operand 30440 states and 34147 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:21,194 INFO L93 Difference]: Finished difference Result 70687 states and 79657 transitions. [2024-11-16 04:19:21,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:21,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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 311 [2024-11-16 04:19:21,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:21,234 INFO L225 Difference]: With dead ends: 70687 [2024-11-16 04:19:21,234 INFO L226 Difference]: Without dead ends: 38969 [2024-11-16 04:19:21,249 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:21,250 INFO L432 NwaCegarLoop]: 720 mSDtfsCounter, 343 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:21,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 780 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:19:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38969 states. [2024-11-16 04:19:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38969 to 37689. [2024-11-16 04:19:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37689 states, 37688 states have (on average 1.1061080450010614) internal successors, (41687), 37688 states have internal predecessors, (41687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37689 states to 37689 states and 41687 transitions. [2024-11-16 04:19:21,665 INFO L78 Accepts]: Start accepts. Automaton has 37689 states and 41687 transitions. Word has length 311 [2024-11-16 04:19:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:21,666 INFO L471 AbstractCegarLoop]: Abstraction has 37689 states and 41687 transitions. [2024-11-16 04:19:21,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 37689 states and 41687 transitions. [2024-11-16 04:19:21,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-16 04:19:21,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:21,672 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:21,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 04:19:21,673 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:21,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash -837291949, now seen corresponding path program 1 times [2024-11-16 04:19:21,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:21,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427384190] [2024-11-16 04:19:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:21,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 313 proven. 74 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-16 04:19:22,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:22,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427384190] [2024-11-16 04:19:22,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427384190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:22,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734931668] [2024-11-16 04:19:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:22,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:19:22,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:19:22,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:19:22,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 04:19:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:22,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 04:19:22,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:19:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 313 proven. 74 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-16 04:19:22,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:19:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-11-16 04:19:22,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734931668] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:22,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 04:19:22,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-16 04:19:22,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147393630] [2024-11-16 04:19:22,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:22,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:22,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:22,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:22,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:19:22,722 INFO L87 Difference]: Start difference. First operand 37689 states and 41687 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:25,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:25,321 INFO L93 Difference]: Finished difference Result 90749 states and 100483 transitions. [2024-11-16 04:19:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:25,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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 320 [2024-11-16 04:19:25,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:25,380 INFO L225 Difference]: With dead ends: 90749 [2024-11-16 04:19:25,380 INFO L226 Difference]: Without dead ends: 52634 [2024-11-16 04:19:25,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 04:19:25,409 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 842 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:25,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 193 Invalid, 2823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 04:19:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52634 states. [2024-11-16 04:19:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52634 to 50075. [2024-11-16 04:19:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50075 states, 50074 states have (on average 1.1096577065942406) internal successors, (55565), 50074 states have internal predecessors, (55565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50075 states to 50075 states and 55565 transitions. [2024-11-16 04:19:26,002 INFO L78 Accepts]: Start accepts. Automaton has 50075 states and 55565 transitions. Word has length 320 [2024-11-16 04:19:26,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:26,002 INFO L471 AbstractCegarLoop]: Abstraction has 50075 states and 55565 transitions. [2024-11-16 04:19:26,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:26,002 INFO L276 IsEmpty]: Start isEmpty. Operand 50075 states and 55565 transitions. [2024-11-16 04:19:26,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2024-11-16 04:19:26,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:26,011 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-11-16 04:19:26,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 04:19:26,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 04:19:26,216 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:26,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:26,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1409532920, now seen corresponding path program 1 times [2024-11-16 04:19:26,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:26,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25115689] [2024-11-16 04:19:26,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:26,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-11-16 04:19:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25115689] [2024-11-16 04:19:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25115689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:26,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:26,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553317559] [2024-11-16 04:19:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:26,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:26,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:26,718 INFO L87 Difference]: Start difference. First operand 50075 states and 55565 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:28,432 INFO L93 Difference]: Finished difference Result 120670 states and 133542 transitions. [2024-11-16 04:19:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:28,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 418 [2024-11-16 04:19:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:28,511 INFO L225 Difference]: With dead ends: 120670 [2024-11-16 04:19:28,512 INFO L226 Difference]: Without dead ends: 70170 [2024-11-16 04:19:28,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:28,551 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 475 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:28,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 352 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 04:19:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70170 states. [2024-11-16 04:19:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70170 to 68851. [2024-11-16 04:19:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68851 states, 68850 states have (on average 1.10159767610748) internal successors, (75845), 68850 states have internal predecessors, (75845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:29,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68851 states to 68851 states and 75845 transitions. [2024-11-16 04:19:29,327 INFO L78 Accepts]: Start accepts. Automaton has 68851 states and 75845 transitions. Word has length 418 [2024-11-16 04:19:29,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:29,328 INFO L471 AbstractCegarLoop]: Abstraction has 68851 states and 75845 transitions. [2024-11-16 04:19:29,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:29,328 INFO L276 IsEmpty]: Start isEmpty. Operand 68851 states and 75845 transitions. [2024-11-16 04:19:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-11-16 04:19:29,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:29,339 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1] [2024-11-16 04:19:29,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 04:19:29,339 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:29,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:29,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1817780686, now seen corresponding path program 1 times [2024-11-16 04:19:29,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:29,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116885983] [2024-11-16 04:19:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:29,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-16 04:19:29,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:29,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116885983] [2024-11-16 04:19:29,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116885983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:29,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:29,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 04:19:29,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162395102] [2024-11-16 04:19:29,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:29,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 04:19:29,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:29,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 04:19:29,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:29,861 INFO L87 Difference]: Start difference. First operand 68851 states and 75845 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:31,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:31,884 INFO L93 Difference]: Finished difference Result 150934 states and 166447 transitions. [2024-11-16 04:19:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 04:19:31,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 445 [2024-11-16 04:19:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:32,086 INFO L225 Difference]: With dead ends: 150934 [2024-11-16 04:19:32,089 INFO L226 Difference]: Without dead ends: 81658 [2024-11-16 04:19:32,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 04:19:32,137 INFO L432 NwaCegarLoop]: 258 mSDtfsCounter, 490 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:32,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 305 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-16 04:19:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81658 states. [2024-11-16 04:19:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81658 to 62430. [2024-11-16 04:19:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62430 states, 62429 states have (on average 1.104470678690993) internal successors, (68951), 62429 states have internal predecessors, (68951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62430 states to 62430 states and 68951 transitions. [2024-11-16 04:19:33,063 INFO L78 Accepts]: Start accepts. Automaton has 62430 states and 68951 transitions. Word has length 445 [2024-11-16 04:19:33,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:33,063 INFO L471 AbstractCegarLoop]: Abstraction has 62430 states and 68951 transitions. [2024-11-16 04:19:33,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:33,064 INFO L276 IsEmpty]: Start isEmpty. Operand 62430 states and 68951 transitions. [2024-11-16 04:19:33,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2024-11-16 04:19:33,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:33,076 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:33,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 04:19:33,077 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:33,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:33,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1080933301, now seen corresponding path program 1 times [2024-11-16 04:19:33,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:33,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692744802] [2024-11-16 04:19:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:33,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 301 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:19:34,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:34,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692744802] [2024-11-16 04:19:34,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692744802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 04:19:34,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157202980] [2024-11-16 04:19:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:34,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:19:34,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:19:34,326 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 04:19:34,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 04:19:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:34,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 04:19:34,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:19:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 218 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 04:19:34,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 04:19:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 218 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-16 04:19:35,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157202980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 04:19:35,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 04:19:35,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-16 04:19:35,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365840529] [2024-11-16 04:19:35,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 04:19:35,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 04:19:35,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:35,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 04:19:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-16 04:19:35,903 INFO L87 Difference]: Start difference. First operand 62430 states and 68951 transitions. Second operand has 9 states, 9 states have (on average 120.77777777777777) internal successors, (1087), 9 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:46,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:46,494 INFO L93 Difference]: Finished difference Result 180826 states and 200212 transitions. [2024-11-16 04:19:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 04:19:46,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 120.77777777777777) internal successors, (1087), 9 states have internal predecessors, (1087), 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 456 [2024-11-16 04:19:46,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:46,627 INFO L225 Difference]: With dead ends: 180826 [2024-11-16 04:19:46,627 INFO L226 Difference]: Without dead ends: 117544 [2024-11-16 04:19:46,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2024-11-16 04:19:46,660 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 6729 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 12410 mSolverCounterSat, 2546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6729 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 14956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2546 IncrementalHoareTripleChecker+Valid, 12410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:46,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6729 Valid, 518 Invalid, 14956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2546 Valid, 12410 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2024-11-16 04:19:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117544 states. [2024-11-16 04:19:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117544 to 108094. [2024-11-16 04:19:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108094 states, 108093 states have (on average 1.0959914148002183) internal successors, (118469), 108093 states have internal predecessors, (118469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108094 states to 108094 states and 118469 transitions. [2024-11-16 04:19:48,244 INFO L78 Accepts]: Start accepts. Automaton has 108094 states and 118469 transitions. Word has length 456 [2024-11-16 04:19:48,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:48,244 INFO L471 AbstractCegarLoop]: Abstraction has 108094 states and 118469 transitions. [2024-11-16 04:19:48,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 120.77777777777777) internal successors, (1087), 9 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 108094 states and 118469 transitions. [2024-11-16 04:19:48,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-11-16 04:19:48,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:48,258 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:48,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 04:19:48,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 04:19:48,459 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:48,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:48,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1463469175, now seen corresponding path program 1 times [2024-11-16 04:19:48,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:48,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805564297] [2024-11-16 04:19:48,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:48,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-16 04:19:49,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:49,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805564297] [2024-11-16 04:19:49,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805564297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:49,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:49,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:19:49,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326245775] [2024-11-16 04:19:49,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:49,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:49,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:49,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:49,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:49,597 INFO L87 Difference]: Start difference. First operand 108094 states and 118469 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:52,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:52,709 INFO L93 Difference]: Finished difference Result 250375 states and 273830 transitions. [2024-11-16 04:19:52,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:52,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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 466 [2024-11-16 04:19:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:52,901 INFO L225 Difference]: With dead ends: 250375 [2024-11-16 04:19:52,901 INFO L226 Difference]: Without dead ends: 137162 [2024-11-16 04:19:52,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:52,972 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 774 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:52,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 285 Invalid, 3039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-16 04:19:53,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137162 states. [2024-11-16 04:19:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137162 to 133269. [2024-11-16 04:19:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133269 states, 133268 states have (on average 1.0924227871657113) internal successors, (145585), 133268 states have internal predecessors, (145585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133269 states to 133269 states and 145585 transitions. [2024-11-16 04:19:55,134 INFO L78 Accepts]: Start accepts. Automaton has 133269 states and 145585 transitions. Word has length 466 [2024-11-16 04:19:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:19:55,135 INFO L471 AbstractCegarLoop]: Abstraction has 133269 states and 145585 transitions. [2024-11-16 04:19:55,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:55,135 INFO L276 IsEmpty]: Start isEmpty. Operand 133269 states and 145585 transitions. [2024-11-16 04:19:55,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-16 04:19:55,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:19:55,147 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:19:55,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 04:19:55,148 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:19:55,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:19:55,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1855535279, now seen corresponding path program 1 times [2024-11-16 04:19:55,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:19:55,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494559064] [2024-11-16 04:19:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:19:55,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:19:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:19:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 04:19:56,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:19:56,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494559064] [2024-11-16 04:19:56,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494559064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:19:56,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:19:56,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 04:19:56,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733205332] [2024-11-16 04:19:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:19:56,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 04:19:56,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:19:56,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 04:19:56,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:56,334 INFO L87 Difference]: Start difference. First operand 133269 states and 145585 transitions. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:19:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:19:59,468 INFO L93 Difference]: Finished difference Result 288741 states and 315119 transitions. [2024-11-16 04:19:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 04:19:59,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 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 499 [2024-11-16 04:19:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:19:59,658 INFO L225 Difference]: With dead ends: 288741 [2024-11-16 04:19:59,658 INFO L226 Difference]: Without dead ends: 154620 [2024-11-16 04:19:59,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 04:19:59,706 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 968 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-16 04:19:59,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 260 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-16 04:19:59,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154620 states. [2024-11-16 04:20:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154620 to 137962. [2024-11-16 04:20:01,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137962 states, 137961 states have (on average 1.0923739317633243) internal successors, (150705), 137961 states have internal predecessors, (150705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:02,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137962 states to 137962 states and 150705 transitions. [2024-11-16 04:20:02,107 INFO L78 Accepts]: Start accepts. Automaton has 137962 states and 150705 transitions. Word has length 499 [2024-11-16 04:20:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:20:02,109 INFO L471 AbstractCegarLoop]: Abstraction has 137962 states and 150705 transitions. [2024-11-16 04:20:02,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:20:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 137962 states and 150705 transitions. [2024-11-16 04:20:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-11-16 04:20:02,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:20:02,143 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:20:02,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 04:20:02,143 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:20:02,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:20:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash 333480919, now seen corresponding path program 1 times [2024-11-16 04:20:02,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:20:02,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129969786] [2024-11-16 04:20:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:20:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:20:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat