./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/brs2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/brs2.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 fc354f47e1cc26b26f82415b2113a1e937a24cebf9ecb225fe7f6242be1c8136 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 09:22:42,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 09:22:42,133 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 09:22:42,138 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 09:22:42,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 09:22:42,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 09:22:42,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 09:22:42,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 09:22:42,171 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 09:22:42,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 09:22:42,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 09:22:42,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 09:22:42,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 09:22:42,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 09:22:42,176 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 09:22:42,176 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 09:22:42,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 09:22:42,177 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 09:22:42,177 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 09:22:42,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 09:22:42,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 09:22:42,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 09:22:42,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 09:22:42,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 09:22:42,183 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 09:22:42,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 09:22:42,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 09:22:42,184 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 09:22:42,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 09:22:42,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 09:22:42,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 09:22:42,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 09:22:42,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:22:42,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 09:22:42,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 09:22:42,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 09:22:42,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 09:22:42,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 09:22:42,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 09:22:42,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 09:22:42,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 09:22:42,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 09:22:42,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc354f47e1cc26b26f82415b2113a1e937a24cebf9ecb225fe7f6242be1c8136 [2024-11-18 09:22:42,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 09:22:42,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 09:22:42,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 09:22:42,463 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 09:22:42,463 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 09:22:42,465 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/brs2.c [2024-11-18 09:22:43,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 09:22:44,164 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 09:22:44,165 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/brs2.c [2024-11-18 09:22:44,173 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a10f293ee/9f470cad61044d04b9254606bd2ba5e6/FLAG6e737c6db [2024-11-18 09:22:44,185 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a10f293ee/9f470cad61044d04b9254606bd2ba5e6 [2024-11-18 09:22:44,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 09:22:44,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 09:22:44,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 09:22:44,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 09:22:44,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 09:22:44,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb427a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44, skipping insertion in model container [2024-11-18 09:22:44,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,218 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 09:22:44,384 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/array-fpi/brs2.c[587,600] [2024-11-18 09:22:44,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:22:44,411 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 09:22:44,423 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/array-fpi/brs2.c[587,600] [2024-11-18 09:22:44,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 09:22:44,446 INFO L204 MainTranslator]: Completed translation [2024-11-18 09:22:44,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44 WrapperNode [2024-11-18 09:22:44,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 09:22:44,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 09:22:44,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 09:22:44,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 09:22:44,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,480 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-11-18 09:22:44,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 09:22:44,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 09:22:44,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 09:22:44,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 09:22:44,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,492 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,506 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 7, 4, 3]. 44 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-11-18 09:22:44,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 09:22:44,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 09:22:44,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 09:22:44,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 09:22:44,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (1/1) ... [2024-11-18 09:22:44,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 09:22:44,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:44,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 09:22:44,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 09:22:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 09:22:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 09:22:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 09:22:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 09:22:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 09:22:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-18 09:22:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-18 09:22:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-18 09:22:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-18 09:22:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-18 09:22:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-18 09:22:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 09:22:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 09:22:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-18 09:22:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-18 09:22:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-18 09:22:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-18 09:22:44,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 09:22:44,662 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 09:22:44,664 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 09:22:44,814 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-18 09:22:44,815 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 09:22:44,829 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 09:22:44,829 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 09:22:44,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:22:44 BoogieIcfgContainer [2024-11-18 09:22:44,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 09:22:44,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 09:22:44,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 09:22:44,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 09:22:44,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:22:44" (1/3) ... [2024-11-18 09:22:44,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95d71df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:22:44, skipping insertion in model container [2024-11-18 09:22:44,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:22:44" (2/3) ... [2024-11-18 09:22:44,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95d71df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:22:44, skipping insertion in model container [2024-11-18 09:22:44,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:22:44" (3/3) ... [2024-11-18 09:22:44,842 INFO L112 eAbstractionObserver]: Analyzing ICFG brs2.c [2024-11-18 09:22:44,860 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 09:22:44,860 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 09:22:44,947 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 09:22:44,956 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;@2d2782bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 09:22:44,957 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 09:22:44,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) [2024-11-18 09:22:44,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 09:22:44,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:44,968 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:44,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:44,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2024-11-18 09:22:44,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:44,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638842977] [2024-11-18 09:22:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:45,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:45,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:45,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638842977] [2024-11-18 09:22:45,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638842977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:22:45,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:22:45,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 09:22:45,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718317755] [2024-11-18 09:22:45,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:22:45,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 09:22:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:45,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 09:22:45,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:22:45,193 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-18 09:22:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:45,207 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2024-11-18 09:22:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 09:22:45,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2024-11-18 09:22:45,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:45,216 INFO L225 Difference]: With dead ends: 36 [2024-11-18 09:22:45,216 INFO L226 Difference]: Without dead ends: 16 [2024-11-18 09:22:45,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 09:22:45,224 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:45,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:22:45,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-18 09:22:45,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-18 09:22:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2024-11-18 09:22:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-18 09:22:45,260 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2024-11-18 09:22:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:45,261 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-18 09:22:45,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-18 09:22:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-18 09:22:45,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 09:22:45,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:45,262 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:45,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 09:22:45,263 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:45,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2024-11-18 09:22:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:45,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662881345] [2024-11-18 09:22:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:45,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:45,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:45,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662881345] [2024-11-18 09:22:45,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662881345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:22:45,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:22:45,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 09:22:45,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280703147] [2024-11-18 09:22:45,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:22:45,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 09:22:45,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:45,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 09:22:45,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 09:22:45,436 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-18 09:22:45,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:45,508 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-11-18 09:22:45,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 09:22:45,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2024-11-18 09:22:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:45,510 INFO L225 Difference]: With dead ends: 33 [2024-11-18 09:22:45,510 INFO L226 Difference]: Without dead ends: 22 [2024-11-18 09:22:45,510 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 [2024-11-18 09:22:45,511 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:45,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 12 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:22:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-18 09:22:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-18 09:22:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2024-11-18 09:22:45,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-18 09:22:45,525 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2024-11-18 09:22:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:45,525 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-18 09:22:45,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-18 09:22:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-18 09:22:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-18 09:22:45,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:45,527 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:45,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 09:22:45,527 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:45,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2024-11-18 09:22:45,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:45,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889913491] [2024-11-18 09:22:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:45,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 09:22:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889913491] [2024-11-18 09:22:45,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889913491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 09:22:45,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 09:22:45,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 09:22:45,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573709574] [2024-11-18 09:22:45,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 09:22:45,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 09:22:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:45,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 09:22:45,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 09:22:45,875 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-18 09:22:45,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:45,931 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-11-18 09:22:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 09:22:45,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2024-11-18 09:22:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:45,935 INFO L225 Difference]: With dead ends: 27 [2024-11-18 09:22:45,936 INFO L226 Difference]: Without dead ends: 23 [2024-11-18 09:22:45,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 09:22:45,938 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:45,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 09:22:45,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-18 09:22:45,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-18 09:22:45,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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) [2024-11-18 09:22:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-18 09:22:45,947 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2024-11-18 09:22:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:45,947 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-18 09:22:45,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2024-11-18 09:22:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-18 09:22:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-18 09:22:45,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:45,949 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:45,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 09:22:45,949 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:45,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199858, now seen corresponding path program 1 times [2024-11-18 09:22:45,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:45,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006788588] [2024-11-18 09:22:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:46,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:46,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006788588] [2024-11-18 09:22:46,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006788588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:46,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612399836] [2024-11-18 09:22:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:46,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:46,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:46,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:46,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 09:22:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:46,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 09:22:46,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:46,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:46,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612399836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:46,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:46,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 09:22:46,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140114991] [2024-11-18 09:22:46,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:46,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 09:22:46,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:46,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 09:22:46,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-18 09:22:46,400 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2024-11-18 09:22:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:46,510 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-18 09:22:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 09:22:46,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 20 [2024-11-18 09:22:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:46,512 INFO L225 Difference]: With dead ends: 43 [2024-11-18 09:22:46,512 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 09:22:46,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-18 09:22:46,514 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:46,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:22:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 09:22:46,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2024-11-18 09:22:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2024-11-18 09:22:46,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-18 09:22:46,519 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2024-11-18 09:22:46,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:46,520 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-18 09:22:46,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2024-11-18 09:22:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-18 09:22:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 09:22:46,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:46,521 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:46,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 09:22:46,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:46,723 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:46,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:46,723 INFO L85 PathProgramCache]: Analyzing trace with hash 168847774, now seen corresponding path program 1 times [2024-11-18 09:22:46,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:46,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762000432] [2024-11-18 09:22:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:47,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:47,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762000432] [2024-11-18 09:22:47,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762000432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:47,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806462724] [2024-11-18 09:22:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 09:22:47,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:47,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:47,466 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) [2024-11-18 09:22:47,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 09:22:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:22:47,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 09:22:47,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:47,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:22:47,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:22:47,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-18 09:22:47,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-18 09:22:47,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 09:22:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:47,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:48,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-18 09:22:48,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-18 09:22:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:48,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806462724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:48,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:48,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 27 [2024-11-18 09:22:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082280353] [2024-11-18 09:22:48,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:48,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 09:22:48,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 09:22:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2024-11-18 09:22:48,137 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 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) [2024-11-18 09:22:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:48,419 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2024-11-18 09:22:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 09:22:48,419 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 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 23 [2024-11-18 09:22:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:48,422 INFO L225 Difference]: With dead ends: 50 [2024-11-18 09:22:48,423 INFO L226 Difference]: Without dead ends: 30 [2024-11-18 09:22:48,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:22:48,424 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 34 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:48,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 52 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:22:48,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-18 09:22:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-18 09:22:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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) [2024-11-18 09:22:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-11-18 09:22:48,437 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2024-11-18 09:22:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:48,437 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-11-18 09:22:48,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 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) [2024-11-18 09:22:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-11-18 09:22:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-18 09:22:48,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:48,439 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:48,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 09:22:48,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:48,640 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:48,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1961352373, now seen corresponding path program 2 times [2024-11-18 09:22:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:48,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222265394] [2024-11-18 09:22:48,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:22:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:48,671 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:22:48,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:48,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:48,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222265394] [2024-11-18 09:22:48,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222265394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:48,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897751407] [2024-11-18 09:22:48,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:22:48,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:48,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:48,801 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) [2024-11-18 09:22:48,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 09:22:48,863 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:22:48,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:48,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 09:22:48,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:48,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:49,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897751407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:49,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:49,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-18 09:22:49,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239236580] [2024-11-18 09:22:49,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:49,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 09:22:49,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:49,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 09:22:49,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-18 09:22:49,006 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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) [2024-11-18 09:22:49,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:49,121 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-11-18 09:22:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 09:22:49,122 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-18 09:22:49,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:49,122 INFO L225 Difference]: With dead ends: 54 [2024-11-18 09:22:49,122 INFO L226 Difference]: Without dead ends: 34 [2024-11-18 09:22:49,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-18 09:22:49,124 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:49,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 35 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:22:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-18 09:22:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2024-11-18 09:22:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 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) [2024-11-18 09:22:49,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-18 09:22:49,129 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 26 [2024-11-18 09:22:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:49,130 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-18 09:22:49,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 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) [2024-11-18 09:22:49,131 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-18 09:22:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 09:22:49,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:49,132 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:49,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 09:22:49,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:49,333 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:49,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:49,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1507669223, now seen corresponding path program 3 times [2024-11-18 09:22:49,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:49,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956997299] [2024-11-18 09:22:49,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:22:49,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:49,378 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 09:22:49,379 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:50,608 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:22:50,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:50,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956997299] [2024-11-18 09:22:50,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956997299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:50,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625187208] [2024-11-18 09:22:50,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:22:50,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:50,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:50,612 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:50,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 09:22:50,690 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 09:22:50,690 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:50,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 09:22:50,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:50,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-18 09:22:50,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-18 09:22:51,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:22:51,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-18 09:22:51,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-18 09:22:51,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:22:51,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:22:51,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 40 [2024-11-18 09:22:51,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 09:22:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:22:51,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 09:22:52,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625187208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:52,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:52,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 18] total 49 [2024-11-18 09:22:52,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646524113] [2024-11-18 09:22:52,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:52,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-18 09:22:52,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-18 09:22:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2045, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 09:22:52,165 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 49 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:55,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:22:55,763 INFO L93 Difference]: Finished difference Result 91 states and 111 transitions. [2024-11-18 09:22:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-18 09:22:55,764 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-18 09:22:55,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:22:55,766 INFO L225 Difference]: With dead ends: 91 [2024-11-18 09:22:55,766 INFO L226 Difference]: Without dead ends: 75 [2024-11-18 09:22:55,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2791 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1635, Invalid=7871, Unknown=0, NotChecked=0, Total=9506 [2024-11-18 09:22:55,770 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 127 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 09:22:55,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 92 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 09:22:55,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-18 09:22:55,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2024-11-18 09:22:55,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 states have internal predecessors, (66), 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) [2024-11-18 09:22:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2024-11-18 09:22:55,790 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 29 [2024-11-18 09:22:55,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:22:55,791 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2024-11-18 09:22:55,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:22:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2024-11-18 09:22:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-18 09:22:55,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:22:55,792 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:22:55,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 09:22:55,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:55,997 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:22:55,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:22:55,998 INFO L85 PathProgramCache]: Analyzing trace with hash -904524816, now seen corresponding path program 4 times [2024-11-18 09:22:55,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:22:55,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96800386] [2024-11-18 09:22:55,998 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:22:55,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:22:56,021 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:22:56,021 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:56,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:22:56,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96800386] [2024-11-18 09:22:56,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96800386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:22:56,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505033299] [2024-11-18 09:22:56,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 09:22:56,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:22:56,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:22:56,326 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:22:56,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 09:22:56,386 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 09:22:56,386 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:22:56,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-18 09:22:56,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:22:56,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-18 09:22:56,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-18 09:22:56,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 31 [2024-11-18 09:22:56,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:22:56,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-11-18 09:22:56,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2024-11-18 09:22:57,190 INFO L349 Elim1Store]: treesize reduction 26, result has 70.1 percent of original size [2024-11-18 09:22:57,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 96 [2024-11-18 09:22:57,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 73 [2024-11-18 09:22:57,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 09:22:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:57,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:22:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:22:58,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505033299] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:22:58,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:22:58,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 22] total 53 [2024-11-18 09:22:58,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052615208] [2024-11-18 09:22:58,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:22:58,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-18 09:22:58,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:22:58,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-18 09:22:58,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=2482, Unknown=0, NotChecked=0, Total=2756 [2024-11-18 09:22:58,392 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 53 states, 53 states have (on average 1.528301886792453) internal successors, (81), 53 states have internal predecessors, (81), 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) [2024-11-18 09:23:06,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:06,981 INFO L93 Difference]: Finished difference Result 156 states and 187 transitions. [2024-11-18 09:23:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-18 09:23:06,982 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.528301886792453) internal successors, (81), 53 states have internal predecessors, (81), 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 32 [2024-11-18 09:23:06,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:06,983 INFO L225 Difference]: With dead ends: 156 [2024-11-18 09:23:06,983 INFO L226 Difference]: Without dead ends: 118 [2024-11-18 09:23:06,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5527 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2943, Invalid=16517, Unknown=0, NotChecked=0, Total=19460 [2024-11-18 09:23:06,988 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 386 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:06,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 132 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 09:23:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-18 09:23:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 81. [2024-11-18 09:23:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.225) internal successors, (98), 80 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2024-11-18 09:23:07,016 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 32 [2024-11-18 09:23:07,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:07,017 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2024-11-18 09:23:07,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.528301886792453) internal successors, (81), 53 states have internal predecessors, (81), 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) [2024-11-18 09:23:07,017 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2024-11-18 09:23:07,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-18 09:23:07,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:07,018 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:07,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 09:23:07,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:07,219 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:07,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:07,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1522304953, now seen corresponding path program 5 times [2024-11-18 09:23:07,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:07,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974616410] [2024-11-18 09:23:07,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:23:07,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:07,273 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 09:23:07,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:07,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:07,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974616410] [2024-11-18 09:23:07,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974616410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:07,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509064809] [2024-11-18 09:23:07,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 09:23:07,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:07,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:07,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:23:07,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 09:23:07,506 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-18 09:23:07,506 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:07,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 09:23:07,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:07,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509064809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:07,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:07,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2024-11-18 09:23:07,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80269029] [2024-11-18 09:23:07,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:07,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 09:23:07,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:07,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 09:23:07,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2024-11-18 09:23:07,675 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:07,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:07,910 INFO L93 Difference]: Finished difference Result 229 states and 269 transitions. [2024-11-18 09:23:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-18 09:23:07,910 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-18 09:23:07,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:07,911 INFO L225 Difference]: With dead ends: 229 [2024-11-18 09:23:07,911 INFO L226 Difference]: Without dead ends: 107 [2024-11-18 09:23:07,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 09:23:07,914 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 67 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:07,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 39 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 09:23:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-18 09:23:07,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2024-11-18 09:23:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 86 states have internal predecessors, (106), 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) [2024-11-18 09:23:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2024-11-18 09:23:07,936 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 35 [2024-11-18 09:23:07,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:07,936 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2024-11-18 09:23:07,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 09:23:07,937 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2024-11-18 09:23:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-18 09:23:07,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:07,938 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:07,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 09:23:08,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:08,139 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:08,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:08,140 INFO L85 PathProgramCache]: Analyzing trace with hash -851390281, now seen corresponding path program 6 times [2024-11-18 09:23:08,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:08,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011879793] [2024-11-18 09:23:08,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:23:08,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:08,191 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-18 09:23:08,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:09,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:09,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011879793] [2024-11-18 09:23:09,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011879793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:09,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174466350] [2024-11-18 09:23:09,998 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 09:23:09,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:09,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:10,000 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:23:10,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 09:23:10,093 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-18 09:23:10,094 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:10,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-18 09:23:10,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:10,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:23:10,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-18 09:23:10,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-18 09:23:10,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-18 09:23:10,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:23:10,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-18 09:23:10,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-18 09:23:10,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-18 09:23:11,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-11-18 09:23:11,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:11,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 24 [2024-11-18 09:23:11,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 09:23:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:11,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:12,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2024-11-18 09:23:12,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:12,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 12166 treesize of output 10374 [2024-11-18 09:23:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:12,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174466350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:12,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:12,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 28] total 73 [2024-11-18 09:23:12,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036135234] [2024-11-18 09:23:12,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:12,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-18 09:23:12,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:12,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-18 09:23:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=777, Invalid=4479, Unknown=0, NotChecked=0, Total=5256 [2024-11-18 09:23:12,607 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 73 states, 73 states have (on average 1.4246575342465753) internal successors, (104), 73 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) [2024-11-18 09:23:16,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:16,170 INFO L93 Difference]: Finished difference Result 218 states and 272 transitions. [2024-11-18 09:23:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-18 09:23:16,171 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.4246575342465753) internal successors, (104), 73 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 41 [2024-11-18 09:23:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:16,172 INFO L225 Difference]: With dead ends: 218 [2024-11-18 09:23:16,172 INFO L226 Difference]: Without dead ends: 111 [2024-11-18 09:23:16,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4731 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2353, Invalid=12653, Unknown=0, NotChecked=0, Total=15006 [2024-11-18 09:23:16,175 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 200 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:16,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 120 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 09:23:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-18 09:23:16,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2024-11-18 09:23:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 103 states have internal predecessors, (123), 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) [2024-11-18 09:23:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2024-11-18 09:23:16,208 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 41 [2024-11-18 09:23:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:16,208 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2024-11-18 09:23:16,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.4246575342465753) internal successors, (104), 73 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) [2024-11-18 09:23:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2024-11-18 09:23:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 09:23:16,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:16,210 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:16,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 09:23:16,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:16,411 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:16,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2074257114, now seen corresponding path program 7 times [2024-11-18 09:23:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507806397] [2024-11-18 09:23:16,412 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:23:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:18,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:18,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507806397] [2024-11-18 09:23:18,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507806397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:18,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938303924] [2024-11-18 09:23:18,790 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 09:23:18,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:18,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:18,792 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:23:18,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 09:23:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 09:23:18,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-18 09:23:18,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:18,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:23:18,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-18 09:23:19,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2024-11-18 09:23:19,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2024-11-18 09:23:19,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 41 [2024-11-18 09:23:19,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:23:19,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-18 09:23:19,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-18 09:23:19,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2024-11-18 09:23:19,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-11-18 09:23:20,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2024-11-18 09:23:20,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:20,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 28 [2024-11-18 09:23:20,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 09:23:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:20,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:21,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 237 treesize of output 227 [2024-11-18 09:23:23,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:24,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 202998146852770 treesize of output 197500588713890 [2024-11-18 09:23:36,015 WARN L286 SmtUtils]: Spent 11.80s on a formula simplification. DAG size of input: 46297 DAG size of output: 100 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-18 09:23:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:36,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938303924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:36,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:36,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 27] total 76 [2024-11-18 09:23:36,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222805694] [2024-11-18 09:23:36,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:36,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-18 09:23:36,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-18 09:23:36,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=5102, Unknown=0, NotChecked=0, Total=5700 [2024-11-18 09:23:36,330 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 76 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 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) [2024-11-18 09:23:42,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:42,928 INFO L93 Difference]: Finished difference Result 203 states and 247 transitions. [2024-11-18 09:23:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-18 09:23:42,928 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 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 47 [2024-11-18 09:23:42,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:42,929 INFO L225 Difference]: With dead ends: 203 [2024-11-18 09:23:42,929 INFO L226 Difference]: Without dead ends: 118 [2024-11-18 09:23:42,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3608 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1257, Invalid=10299, Unknown=0, NotChecked=0, Total=11556 [2024-11-18 09:23:42,932 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 128 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:42,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 148 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 09:23:42,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-18 09:23:42,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 83. [2024-11-18 09:23:42,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 82 states have internal predecessors, (91), 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) [2024-11-18 09:23:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2024-11-18 09:23:42,959 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 47 [2024-11-18 09:23:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:42,959 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2024-11-18 09:23:42,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.644736842105263) internal successors, (125), 76 states have internal predecessors, (125), 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) [2024-11-18 09:23:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2024-11-18 09:23:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 09:23:42,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:42,960 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:42,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 09:23:43,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 09:23:43,161 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:43,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash -199488369, now seen corresponding path program 8 times [2024-11-18 09:23:43,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:43,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254331937] [2024-11-18 09:23:43,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:23:43,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:43,180 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:23:43,180 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 54 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:43,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:43,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254331937] [2024-11-18 09:23:43,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254331937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:43,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40359190] [2024-11-18 09:23:43,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 09:23:43,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:43,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:43,570 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:23:43,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 09:23:43,659 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 09:23:43,660 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:43,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 09:23:43,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:44,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:23:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:44,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40359190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:23:44,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:23:44,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-18 09:23:44,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567169125] [2024-11-18 09:23:44,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:23:44,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 09:23:44,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:23:44,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 09:23:44,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-11-18 09:23:44,390 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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) [2024-11-18 09:23:44,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 09:23:44,714 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2024-11-18 09:23:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 09:23:44,715 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-18 09:23:44,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 09:23:44,716 INFO L225 Difference]: With dead ends: 149 [2024-11-18 09:23:44,716 INFO L226 Difference]: Without dead ends: 96 [2024-11-18 09:23:44,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 78 SyntacticMatches, 13 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-11-18 09:23:44,717 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 09:23:44,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 41 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 09:23:44,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-18 09:23:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2024-11-18 09:23:44,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 85 states have internal predecessors, (95), 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) [2024-11-18 09:23:44,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2024-11-18 09:23:44,745 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 50 [2024-11-18 09:23:44,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 09:23:44,745 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2024-11-18 09:23:44,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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) [2024-11-18 09:23:44,745 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2024-11-18 09:23:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-18 09:23:44,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 09:23:44,746 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 09:23:44,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 09:23:44,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:44,947 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 09:23:44,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 09:23:44,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1527506219, now seen corresponding path program 9 times [2024-11-18 09:23:44,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 09:23:44,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501023948] [2024-11-18 09:23:44,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:23:44,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 09:23:44,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-18 09:23:44,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:49,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 09:23:49,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501023948] [2024-11-18 09:23:49,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501023948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 09:23:49,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784392152] [2024-11-18 09:23:49,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 09:23:49,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 09:23:49,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 09:23:49,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 09:23:49,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 09:23:49,877 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-18 09:23:49,877 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 09:23:49,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-18 09:23:49,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 09:23:49,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-18 09:23:50,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-18 09:23:50,225 INFO L349 Elim1Store]: treesize reduction 36, result has 39.0 percent of original size [2024-11-18 09:23:50,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 29 [2024-11-18 09:23:50,580 INFO L349 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2024-11-18 09:23:50,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 43 [2024-11-18 09:23:50,893 INFO L349 Elim1Store]: treesize reduction 68, result has 25.3 percent of original size [2024-11-18 09:23:50,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 61 [2024-11-18 09:23:51,251 INFO L349 Elim1Store]: treesize reduction 84, result has 21.5 percent of original size [2024-11-18 09:23:51,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 71 treesize of output 75 [2024-11-18 09:23:52,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-18 09:23:52,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-18 09:23:53,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-18 09:23:53,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2024-11-18 09:23:54,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 38 [2024-11-18 09:23:54,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2024-11-18 09:23:55,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 09:23:55,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:23:55,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 35 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 126 treesize of output 148 [2024-11-18 09:23:55,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 110 [2024-11-18 09:23:56,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-18 09:23:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 3 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:23:56,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 09:24:00,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2024-11-18 09:24:00,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-18 09:24:00,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 220 [2024-11-18 09:24:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 09:24:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784392152] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 09:24:00,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 09:24:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 35, 38] total 102 [2024-11-18 09:24:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362293931] [2024-11-18 09:24:00,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 09:24:00,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-11-18 09:24:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 09:24:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-11-18 09:24:00,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=896, Invalid=9406, Unknown=0, NotChecked=0, Total=10302 [2024-11-18 09:24:00,834 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 102 states, 102 states have (on average 1.4509803921568627) internal successors, (148), 102 states have internal predecessors, (148), 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)