./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 8791e8404b61fad2ee3b1ec99bcf7c832e8cc2222e41f2d067d453aff63c4fad --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 02:10:39,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 02:10:39,200 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-10 02:10:39,207 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 02:10:39,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 02:10:39,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 02:10:39,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 02:10:39,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 02:10:39,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 02:10:39,235 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 02:10:39,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 02:10:39,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 02:10:39,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 02:10:39,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 02:10:39,236 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 02:10:39,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 02:10:39,237 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 02:10:39,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 02:10:39,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 02:10:39,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 02:10:39,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 02:10:39,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 02:10:39,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 02:10:39,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 02:10:39,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 02:10:39,241 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 02:10:39,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 02:10:39,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 02:10:39,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 02:10:39,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 02:10:39,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 02:10:39,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 02:10:39,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 02:10:39,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 02:10:39,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 02:10:39,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 02:10:39,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 02:10:39,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 02:10:39,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 02:10:39,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8791e8404b61fad2ee3b1ec99bcf7c832e8cc2222e41f2d067d453aff63c4fad [2024-11-10 02:10:39,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 02:10:39,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 02:10:39,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 02:10:39,486 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 02:10:39,486 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 02:10:39,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2024-11-10 02:10:40,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 02:10:40,957 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 02:10:40,958 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c [2024-11-10 02:10:40,969 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4447536a/58c375936bab4c9ab799f8c05b91b3d2/FLAG9c711f28f [2024-11-10 02:10:40,981 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4447536a/58c375936bab4c9ab799f8c05b91b3d2 [2024-11-10 02:10:40,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 02:10:40,985 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 02:10:40,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 02:10:40,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 02:10:40,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 02:10:40,992 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:10:40" (1/1) ... [2024-11-10 02:10:40,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50dec996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:40, skipping insertion in model container [2024-11-10 02:10:40,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:10:40" (1/1) ... [2024-11-10 02:10:41,030 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 02:10:41,224 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/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1248,1261] [2024-11-10 02:10:41,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 02:10:41,415 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 02:10:41,424 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/hardware-verification-bv/btor2c-lazyMod.h_Dekker.c[1248,1261] [2024-11-10 02:10:41,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 02:10:41,549 INFO L204 MainTranslator]: Completed translation [2024-11-10 02:10:41,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41 WrapperNode [2024-11-10 02:10:41,550 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 02:10:41,551 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 02:10:41,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 02:10:41,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 02:10:41,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,729 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1990 [2024-11-10 02:10:41,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 02:10:41,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 02:10:41,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 02:10:41,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 02:10:41,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,779 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,847 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 02:10:41,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,905 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:41,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 02:10:41,995 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 02:10:41,996 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 02:10:41,996 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 02:10:41,996 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (1/1) ... [2024-11-10 02:10:42,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 02:10:42,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 02:10:42,032 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) [2024-11-10 02:10:42,033 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 [2024-11-10 02:10:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 02:10:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 02:10:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 02:10:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 02:10:42,264 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 02:10:42,266 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 02:10:44,088 INFO L? ?]: Removed 1308 outVars from TransFormulas that were not future-live. [2024-11-10 02:10:44,088 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 02:10:44,169 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 02:10:44,170 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 02:10:44,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:10:44 BoogieIcfgContainer [2024-11-10 02:10:44,170 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 02:10:44,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 02:10:44,171 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 02:10:44,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 02:10:44,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:10:40" (1/3) ... [2024-11-10 02:10:44,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f847a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:10:44, skipping insertion in model container [2024-11-10 02:10:44,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:10:41" (2/3) ... [2024-11-10 02:10:44,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f847a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:10:44, skipping insertion in model container [2024-11-10 02:10:44,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:10:44" (3/3) ... [2024-11-10 02:10:44,179 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Dekker.c [2024-11-10 02:10:44,193 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 02:10:44,194 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 02:10:44,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 02:10:44,253 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;@4a127566, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 02:10:44,253 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-10 02:10:44,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 465 states, 463 states have (on average 1.4946004319654427) internal successors, (692), 464 states have internal predecessors, (692), 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) [2024-11-10 02:10:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-10 02:10:44,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:10:44,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:10:44,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:10:44,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:10:44,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1586412300, now seen corresponding path program 1 times [2024-11-10 02:10:44,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:10:44,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326078920] [2024-11-10 02:10:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:10:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:10:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:44,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:10:44,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326078920] [2024-11-10 02:10:44,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326078920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:10:44,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:10:44,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 02:10:44,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888511529] [2024-11-10 02:10:44,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:10:44,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 02:10:44,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:10:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 02:10:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:10:44,763 INFO L87 Difference]: Start difference. First operand has 465 states, 463 states have (on average 1.4946004319654427) internal successors, (692), 464 states have internal predecessors, (692), 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 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2024-11-10 02:10:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:10:45,099 INFO L93 Difference]: Finished difference Result 905 states and 1351 transitions. [2024-11-10 02:10:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 02:10:45,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) Word has length 28 [2024-11-10 02:10:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:10:45,130 INFO L225 Difference]: With dead ends: 905 [2024-11-10 02:10:45,132 INFO L226 Difference]: Without dead ends: 462 [2024-11-10 02:10:45,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:10:45,141 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 0 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 02:10:45,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1708 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 02:10:45,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-10 02:10:45,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2024-11-10 02:10:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.492407809110629) internal successors, (688), 461 states have internal predecessors, (688), 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) [2024-11-10 02:10:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 688 transitions. [2024-11-10 02:10:45,194 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 688 transitions. Word has length 28 [2024-11-10 02:10:45,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:10:45,194 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 688 transitions. [2024-11-10 02:10:45,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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) [2024-11-10 02:10:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 688 transitions. [2024-11-10 02:10:45,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-10 02:10:45,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:10:45,195 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:10:45,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 02:10:45,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:10:45,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:10:45,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1789086953, now seen corresponding path program 1 times [2024-11-10 02:10:45,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:10:45,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140027688] [2024-11-10 02:10:45,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:45,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:10:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:10:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:45,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:10:45,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140027688] [2024-11-10 02:10:45,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140027688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:10:45,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:10:45,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 02:10:45,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859205645] [2024-11-10 02:10:45,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:10:45,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 02:10:45,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:10:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 02:10:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:10:45,339 INFO L87 Difference]: Start difference. First operand 462 states and 688 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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) [2024-11-10 02:10:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:10:45,564 INFO L93 Difference]: Finished difference Result 904 states and 1347 transitions. [2024-11-10 02:10:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 02:10:45,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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) Word has length 29 [2024-11-10 02:10:45,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:10:45,567 INFO L225 Difference]: With dead ends: 904 [2024-11-10 02:10:45,567 INFO L226 Difference]: Without dead ends: 464 [2024-11-10 02:10:45,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:10:45,569 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 0 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 02:10:45,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1705 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 02:10:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-11-10 02:10:45,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2024-11-10 02:10:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.490280777537797) internal successors, (690), 463 states have internal predecessors, (690), 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) [2024-11-10 02:10:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 690 transitions. [2024-11-10 02:10:45,582 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 690 transitions. Word has length 29 [2024-11-10 02:10:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:10:45,583 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 690 transitions. [2024-11-10 02:10:45,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 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) [2024-11-10 02:10:45,583 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 690 transitions. [2024-11-10 02:10:45,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-10 02:10:45,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:10:45,584 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:10:45,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 02:10:45,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:10:45,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:10:45,585 INFO L85 PathProgramCache]: Analyzing trace with hash 120123577, now seen corresponding path program 1 times [2024-11-10 02:10:45,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:10:45,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461240967] [2024-11-10 02:10:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:45,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:10:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:10:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:45,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:10:45,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461240967] [2024-11-10 02:10:45,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461240967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:10:45,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:10:45,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 02:10:45,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652221785] [2024-11-10 02:10:45,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:10:45,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 02:10:45,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:10:45,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 02:10:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:10:45,740 INFO L87 Difference]: Start difference. First operand 464 states and 690 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-10 02:10:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:10:45,980 INFO L93 Difference]: Finished difference Result 908 states and 1351 transitions. [2024-11-10 02:10:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 02:10:45,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2024-11-10 02:10:45,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:10:45,982 INFO L225 Difference]: With dead ends: 908 [2024-11-10 02:10:45,982 INFO L226 Difference]: Without dead ends: 466 [2024-11-10 02:10:45,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 02:10:45,984 INFO L432 NwaCegarLoop]: 571 mSDtfsCounter, 0 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 02:10:45,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1705 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 02:10:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-10 02:10:45,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2024-11-10 02:10:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.4881720430107528) internal successors, (692), 465 states have internal predecessors, (692), 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) [2024-11-10 02:10:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 692 transitions. [2024-11-10 02:10:46,000 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 692 transitions. Word has length 30 [2024-11-10 02:10:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:10:46,000 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 692 transitions. [2024-11-10 02:10:46,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-10 02:10:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 692 transitions. [2024-11-10 02:10:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-10 02:10:46,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:10:46,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:10:46,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 02:10:46,002 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:10:46,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:10:46,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2133526994, now seen corresponding path program 1 times [2024-11-10 02:10:46,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:10:46,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734681060] [2024-11-10 02:10:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:46,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:10:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:10:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:46,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:10:46,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734681060] [2024-11-10 02:10:46,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734681060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:10:46,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:10:46,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 02:10:46,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091921554] [2024-11-10 02:10:46,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:10:46,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 02:10:46,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:10:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 02:10:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 02:10:46,238 INFO L87 Difference]: Start difference. First operand 466 states and 692 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2024-11-10 02:10:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:10:46,467 INFO L93 Difference]: Finished difference Result 912 states and 1355 transitions. [2024-11-10 02:10:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 02:10:46,468 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) Word has length 31 [2024-11-10 02:10:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:10:46,469 INFO L225 Difference]: With dead ends: 912 [2024-11-10 02:10:46,470 INFO L226 Difference]: Without dead ends: 468 [2024-11-10 02:10:46,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 02:10:46,474 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 670 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 02:10:46,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1694 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 02:10:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-10 02:10:46,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2024-11-10 02:10:46,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.4860813704496787) internal successors, (694), 467 states have internal predecessors, (694), 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) [2024-11-10 02:10:46,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 694 transitions. [2024-11-10 02:10:46,483 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 694 transitions. Word has length 31 [2024-11-10 02:10:46,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:10:46,483 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 694 transitions. [2024-11-10 02:10:46,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2024-11-10 02:10:46,483 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 694 transitions. [2024-11-10 02:10:46,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-10 02:10:46,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:10:46,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:10:46,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 02:10:46,485 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:10:46,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:10:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1933712254, now seen corresponding path program 1 times [2024-11-10 02:10:46,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:10:46,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689544206] [2024-11-10 02:10:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:46,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:10:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:10:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:46,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:10:46,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689544206] [2024-11-10 02:10:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689544206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:10:46,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:10:46,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 02:10:46,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545588755] [2024-11-10 02:10:46,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:10:46,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 02:10:46,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:10:46,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 02:10:46,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:10:46,753 INFO L87 Difference]: Start difference. First operand 468 states and 694 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) [2024-11-10 02:10:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:10:47,191 INFO L93 Difference]: Finished difference Result 922 states and 1367 transitions. [2024-11-10 02:10:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 02:10:47,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 [2024-11-10 02:10:47,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:10:47,194 INFO L225 Difference]: With dead ends: 922 [2024-11-10 02:10:47,194 INFO L226 Difference]: Without dead ends: 476 [2024-11-10 02:10:47,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-10 02:10:47,196 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 681 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 02:10:47,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 2821 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 02:10:47,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-10 02:10:47,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 472. [2024-11-10 02:10:47,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.4861995753715498) internal successors, (700), 471 states have internal predecessors, (700), 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) [2024-11-10 02:10:47,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 700 transitions. [2024-11-10 02:10:47,207 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 700 transitions. Word has length 32 [2024-11-10 02:10:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:10:47,208 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 700 transitions. [2024-11-10 02:10:47,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) [2024-11-10 02:10:47,208 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 700 transitions. [2024-11-10 02:10:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-10 02:10:47,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:10:47,212 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:10:47,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 02:10:47,212 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:10:47,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:10:47,213 INFO L85 PathProgramCache]: Analyzing trace with hash 32561549, now seen corresponding path program 1 times [2024-11-10 02:10:47,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:10:47,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221777202] [2024-11-10 02:10:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:47,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:10:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:10:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:47,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:10:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221777202] [2024-11-10 02:10:47,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221777202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:10:47,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:10:47,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 02:10:47,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098633194] [2024-11-10 02:10:47,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:10:47,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 02:10:47,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:10:47,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 02:10:47,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:10:47,473 INFO L87 Difference]: Start difference. First operand 472 states and 700 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 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) [2024-11-10 02:10:47,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:10:47,927 INFO L93 Difference]: Finished difference Result 930 states and 1379 transitions. [2024-11-10 02:10:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 02:10:47,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 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 33 [2024-11-10 02:10:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:10:47,930 INFO L225 Difference]: With dead ends: 930 [2024-11-10 02:10:47,931 INFO L226 Difference]: Without dead ends: 480 [2024-11-10 02:10:47,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-10 02:10:47,934 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 673 mSDsluCounter, 2178 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 02:10:47,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 2726 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 02:10:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2024-11-10 02:10:47,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 472. [2024-11-10 02:10:47,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.4861995753715498) internal successors, (700), 471 states have internal predecessors, (700), 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) [2024-11-10 02:10:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 700 transitions. [2024-11-10 02:10:47,944 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 700 transitions. Word has length 33 [2024-11-10 02:10:47,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:10:47,945 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 700 transitions. [2024-11-10 02:10:47,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 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) [2024-11-10 02:10:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 700 transitions. [2024-11-10 02:10:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-10 02:10:47,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:10:47,949 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:10:47,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 02:10:47,949 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:10:47,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:10:47,950 INFO L85 PathProgramCache]: Analyzing trace with hash 115520419, now seen corresponding path program 1 times [2024-11-10 02:10:47,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:10:47,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567631582] [2024-11-10 02:10:47,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:10:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:10:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:48,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:10:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567631582] [2024-11-10 02:10:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567631582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:10:48,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:10:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 02:10:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864008127] [2024-11-10 02:10:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:10:48,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 02:10:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:10:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 02:10:48,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 02:10:48,175 INFO L87 Difference]: Start difference. First operand 472 states and 700 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-11-10 02:10:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:10:48,539 INFO L93 Difference]: Finished difference Result 1273 states and 1890 transitions. [2024-11-10 02:10:48,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 02:10:48,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2024-11-10 02:10:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:10:48,542 INFO L225 Difference]: With dead ends: 1273 [2024-11-10 02:10:48,542 INFO L226 Difference]: Without dead ends: 823 [2024-11-10 02:10:48,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:10:48,543 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 1714 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1714 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 02:10:48,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1714 Valid, 1651 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 02:10:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2024-11-10 02:10:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 478. [2024-11-10 02:10:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.4842767295597483) internal successors, (708), 477 states have internal predecessors, (708), 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) [2024-11-10 02:10:48,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 708 transitions. [2024-11-10 02:10:48,552 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 708 transitions. Word has length 34 [2024-11-10 02:10:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:10:48,552 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 708 transitions. [2024-11-10 02:10:48,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-11-10 02:10:48,553 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 708 transitions. [2024-11-10 02:10:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-11-10 02:10:48,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:10:48,555 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:10:48,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 02:10:48,556 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:10:48,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:10:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash -167982215, now seen corresponding path program 1 times [2024-11-10 02:10:48,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:10:48,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611495216] [2024-11-10 02:10:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:48,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:10:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:10:51,251 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:51,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:10:51,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611495216] [2024-11-10 02:10:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611495216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 02:10:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381984620] [2024-11-10 02:10:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:51,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 02:10:51,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 02:10:51,256 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) [2024-11-10 02:10:51,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 02:10:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:10:53,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 2225 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 02:10:53,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 02:10:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:53,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 02:10:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:54,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381984620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 02:10:54,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 02:10:54,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-10 02:10:54,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113837697] [2024-11-10 02:10:54,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 02:10:54,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 02:10:54,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:10:54,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 02:10:54,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-10 02:10:54,372 INFO L87 Difference]: Start difference. First operand 478 states and 708 transitions. Second operand has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 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) [2024-11-10 02:10:55,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:10:55,192 INFO L93 Difference]: Finished difference Result 1783 states and 2646 transitions. [2024-11-10 02:10:55,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 02:10:55,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 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 253 [2024-11-10 02:10:55,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:10:55,196 INFO L225 Difference]: With dead ends: 1783 [2024-11-10 02:10:55,198 INFO L226 Difference]: Without dead ends: 922 [2024-11-10 02:10:55,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-10 02:10:55,199 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 1543 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 4446 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-10 02:10:55,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 4446 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-10 02:10:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-10 02:10:55,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 528. [2024-11-10 02:10:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.4743833017077799) internal successors, (777), 527 states have internal predecessors, (777), 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) [2024-11-10 02:10:55,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 777 transitions. [2024-11-10 02:10:55,208 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 777 transitions. Word has length 253 [2024-11-10 02:10:55,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:10:55,209 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 777 transitions. [2024-11-10 02:10:55,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 27.6) internal successors, (276), 10 states have internal predecessors, (276), 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) [2024-11-10 02:10:55,209 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 777 transitions. [2024-11-10 02:10:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-10 02:10:55,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:10:55,211 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:10:55,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 02:10:55,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 02:10:55,412 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:10:55,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:10:55,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1711979097, now seen corresponding path program 1 times [2024-11-10 02:10:55,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:10:55,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916058649] [2024-11-10 02:10:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:55,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:10:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:10:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:10:58,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:10:58,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916058649] [2024-11-10 02:10:58,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916058649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:10:58,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:10:58,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 02:10:58,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669479893] [2024-11-10 02:10:58,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:10:58,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 02:10:58,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:10:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 02:10:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 02:10:58,311 INFO L87 Difference]: Start difference. First operand 528 states and 777 transitions. Second operand has 6 states, 6 states have (on average 42.333333333333336) internal successors, (254), 6 states have internal predecessors, (254), 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) [2024-11-10 02:10:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:10:59,034 INFO L93 Difference]: Finished difference Result 1420 states and 2100 transitions. [2024-11-10 02:10:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 02:10:59,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.333333333333336) internal successors, (254), 6 states have internal predecessors, (254), 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 254 [2024-11-10 02:10:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:10:59,041 INFO L225 Difference]: With dead ends: 1420 [2024-11-10 02:10:59,041 INFO L226 Difference]: Without dead ends: 922 [2024-11-10 02:10:59,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:10:59,045 INFO L432 NwaCegarLoop]: 923 mSDtfsCounter, 1331 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 3248 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 02:10:59,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 3248 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 02:10:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-10 02:10:59,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 529. [2024-11-10 02:10:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.4734848484848484) internal successors, (778), 528 states have internal predecessors, (778), 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) [2024-11-10 02:10:59,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 778 transitions. [2024-11-10 02:10:59,061 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 778 transitions. Word has length 254 [2024-11-10 02:10:59,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:10:59,062 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 778 transitions. [2024-11-10 02:10:59,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.333333333333336) internal successors, (254), 6 states have internal predecessors, (254), 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) [2024-11-10 02:10:59,062 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 778 transitions. [2024-11-10 02:10:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-10 02:10:59,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:10:59,065 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:10:59,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 02:10:59,066 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:10:59,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:10:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash -194860497, now seen corresponding path program 1 times [2024-11-10 02:10:59,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:10:59,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610074716] [2024-11-10 02:10:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:10:59,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:11:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:01,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:11:01,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610074716] [2024-11-10 02:11:01,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610074716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:11:01,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:11:01,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 02:11:01,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816014802] [2024-11-10 02:11:01,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:11:01,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 02:11:01,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:11:01,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 02:11:01,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 02:11:01,894 INFO L87 Difference]: Start difference. First operand 529 states and 778 transitions. Second operand has 6 states, 6 states have (on average 42.333333333333336) internal successors, (254), 6 states have internal predecessors, (254), 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) [2024-11-10 02:11:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:11:02,686 INFO L93 Difference]: Finished difference Result 1472 states and 2172 transitions. [2024-11-10 02:11:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 02:11:02,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 42.333333333333336) internal successors, (254), 6 states have internal predecessors, (254), 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 254 [2024-11-10 02:11:02,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:11:02,689 INFO L225 Difference]: With dead ends: 1472 [2024-11-10 02:11:02,690 INFO L226 Difference]: Without dead ends: 973 [2024-11-10 02:11:02,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:11:02,691 INFO L432 NwaCegarLoop]: 961 mSDtfsCounter, 1294 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 3362 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-10 02:11:02,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 3362 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-10 02:11:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2024-11-10 02:11:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 529. [2024-11-10 02:11:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.4734848484848484) internal successors, (778), 528 states have internal predecessors, (778), 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) [2024-11-10 02:11:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 778 transitions. [2024-11-10 02:11:02,708 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 778 transitions. Word has length 254 [2024-11-10 02:11:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:11:02,709 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 778 transitions. [2024-11-10 02:11:02,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.333333333333336) internal successors, (254), 6 states have internal predecessors, (254), 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) [2024-11-10 02:11:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 778 transitions. [2024-11-10 02:11:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-10 02:11:02,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:11:02,711 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:11:02,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 02:11:02,711 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:11:02,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:11:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1812005001, now seen corresponding path program 1 times [2024-11-10 02:11:02,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:11:02,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510760564] [2024-11-10 02:11:02,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:11:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 02:11:05,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:11:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510760564] [2024-11-10 02:11:05,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510760564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 02:11:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287778955] [2024-11-10 02:11:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:05,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 02:11:05,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 02:11:05,498 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) [2024-11-10 02:11:05,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 02:11:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:08,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 2229 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-10 02:11:08,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 02:11:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:10,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 02:11:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:11,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287778955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 02:11:11,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 02:11:11,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 23, 11] total 35 [2024-11-10 02:11:11,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741756539] [2024-11-10 02:11:11,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 02:11:11,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-10 02:11:11,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:11:11,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-10 02:11:11,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 02:11:11,530 INFO L87 Difference]: Start difference. First operand 529 states and 778 transitions. Second operand has 35 states, 35 states have (on average 21.114285714285714) internal successors, (739), 35 states have internal predecessors, (739), 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) [2024-11-10 02:11:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:11:13,372 INFO L93 Difference]: Finished difference Result 1344 states and 1982 transitions. [2024-11-10 02:11:13,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 02:11:13,376 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 21.114285714285714) internal successors, (739), 35 states have internal predecessors, (739), 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 255 [2024-11-10 02:11:13,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:11:13,379 INFO L225 Difference]: With dead ends: 1344 [2024-11-10 02:11:13,379 INFO L226 Difference]: Without dead ends: 845 [2024-11-10 02:11:13,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=490, Invalid=2060, Unknown=0, NotChecked=0, Total=2550 [2024-11-10 02:11:13,381 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 2914 mSDsluCounter, 6691 mSDsCounter, 0 mSdLazyCounter, 3937 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 7130 SdHoareTripleChecker+Invalid, 3942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-10 02:11:13,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2914 Valid, 7130 Invalid, 3942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3937 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-10 02:11:13,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-10 02:11:13,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 772. [2024-11-10 02:11:13,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 1.4773022049286642) internal successors, (1139), 771 states have internal predecessors, (1139), 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) [2024-11-10 02:11:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1139 transitions. [2024-11-10 02:11:13,398 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1139 transitions. Word has length 255 [2024-11-10 02:11:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:11:13,400 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 1139 transitions. [2024-11-10 02:11:13,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 21.114285714285714) internal successors, (739), 35 states have internal predecessors, (739), 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) [2024-11-10 02:11:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1139 transitions. [2024-11-10 02:11:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-10 02:11:13,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:11:13,403 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:11:13,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 02:11:13,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-10 02:11:13,608 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:11:13,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:11:13,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1662743376, now seen corresponding path program 1 times [2024-11-10 02:11:13,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:11:13,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989323371] [2024-11-10 02:11:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:13,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:11:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:20,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:11:20,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989323371] [2024-11-10 02:11:20,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989323371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 02:11:20,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137126345] [2024-11-10 02:11:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:20,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 02:11:20,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 02:11:20,340 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) [2024-11-10 02:11:20,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 02:11:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:25,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 02:11:25,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 02:11:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:25,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 02:11:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:25,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137126345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 02:11:25,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 02:11:25,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2024-11-10 02:11:25,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442352471] [2024-11-10 02:11:25,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 02:11:25,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 02:11:25,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:11:25,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 02:11:25,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2024-11-10 02:11:25,879 INFO L87 Difference]: Start difference. First operand 772 states and 1139 transitions. Second operand has 25 states, 25 states have (on average 29.44) internal successors, (736), 25 states have internal predecessors, (736), 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) [2024-11-10 02:11:28,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:11:28,360 INFO L93 Difference]: Finished difference Result 3571 states and 5277 transitions. [2024-11-10 02:11:28,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-10 02:11:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 29.44) internal successors, (736), 25 states have internal predecessors, (736), 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 256 [2024-11-10 02:11:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:11:28,370 INFO L225 Difference]: With dead ends: 3571 [2024-11-10 02:11:28,370 INFO L226 Difference]: Without dead ends: 2829 [2024-11-10 02:11:28,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 499 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=390, Invalid=2802, Unknown=0, NotChecked=0, Total=3192 [2024-11-10 02:11:28,374 INFO L432 NwaCegarLoop]: 1012 mSDtfsCounter, 3967 mSDsluCounter, 18105 mSDsCounter, 0 mSdLazyCounter, 4875 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3967 SdHoareTripleChecker+Valid, 19117 SdHoareTripleChecker+Invalid, 4881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-10 02:11:28,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3967 Valid, 19117 Invalid, 4881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4875 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-10 02:11:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2024-11-10 02:11:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 908. [2024-11-10 02:11:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 907 states have (on average 1.4729878721058434) internal successors, (1336), 907 states have internal predecessors, (1336), 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) [2024-11-10 02:11:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1336 transitions. [2024-11-10 02:11:28,409 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1336 transitions. Word has length 256 [2024-11-10 02:11:28,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:11:28,410 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1336 transitions. [2024-11-10 02:11:28,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 29.44) internal successors, (736), 25 states have internal predecessors, (736), 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) [2024-11-10 02:11:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1336 transitions. [2024-11-10 02:11:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-10 02:11:28,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:11:28,413 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:11:28,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 02:11:28,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 02:11:28,618 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:11:28,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:11:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1491373699, now seen corresponding path program 1 times [2024-11-10 02:11:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:11:28,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027861995] [2024-11-10 02:11:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:11:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:33,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:11:33,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027861995] [2024-11-10 02:11:33,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027861995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:11:33,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:11:33,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 02:11:33,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732513242] [2024-11-10 02:11:33,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:11:33,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 02:11:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:11:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 02:11:33,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:11:33,254 INFO L87 Difference]: Start difference. First operand 908 states and 1336 transitions. Second operand has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 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) [2024-11-10 02:11:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:11:33,529 INFO L93 Difference]: Finished difference Result 1804 states and 2656 transitions. [2024-11-10 02:11:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 02:11:33,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2024-11-10 02:11:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:11:33,532 INFO L225 Difference]: With dead ends: 1804 [2024-11-10 02:11:33,532 INFO L226 Difference]: Without dead ends: 918 [2024-11-10 02:11:33,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:11:33,534 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 473 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 02:11:33,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 2791 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 02:11:33,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-11-10 02:11:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2024-11-10 02:11:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 1.4700109051254089) internal successors, (1348), 917 states have internal predecessors, (1348), 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) [2024-11-10 02:11:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1348 transitions. [2024-11-10 02:11:33,551 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1348 transitions. Word has length 258 [2024-11-10 02:11:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:11:33,552 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1348 transitions. [2024-11-10 02:11:33,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 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) [2024-11-10 02:11:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1348 transitions. [2024-11-10 02:11:33,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-10 02:11:33,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:11:33,556 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:11:33,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 02:11:33,556 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:11:33,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:11:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1949809982, now seen corresponding path program 1 times [2024-11-10 02:11:33,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:11:33,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814123586] [2024-11-10 02:11:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:33,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:11:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:38,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:11:38,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814123586] [2024-11-10 02:11:38,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814123586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:11:38,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:11:38,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 02:11:38,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045204810] [2024-11-10 02:11:38,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:11:38,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 02:11:38,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:11:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 02:11:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-10 02:11:38,655 INFO L87 Difference]: Start difference. First operand 918 states and 1348 transitions. Second operand has 8 states, 8 states have (on average 32.25) internal successors, (258), 8 states have internal predecessors, (258), 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) [2024-11-10 02:11:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:11:39,140 INFO L93 Difference]: Finished difference Result 2919 states and 4304 transitions. [2024-11-10 02:11:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 02:11:39,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 8 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2024-11-10 02:11:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:11:39,146 INFO L225 Difference]: With dead ends: 2919 [2024-11-10 02:11:39,146 INFO L226 Difference]: Without dead ends: 2023 [2024-11-10 02:11:39,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-10 02:11:39,149 INFO L432 NwaCegarLoop]: 553 mSDtfsCounter, 2662 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2662 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 02:11:39,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2662 Valid, 3036 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 02:11:39,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2024-11-10 02:11:39,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 1552. [2024-11-10 02:11:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 1.4713088330109607) internal successors, (2282), 1551 states have internal predecessors, (2282), 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) [2024-11-10 02:11:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2282 transitions. [2024-11-10 02:11:39,175 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2282 transitions. Word has length 258 [2024-11-10 02:11:39,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:11:39,176 INFO L471 AbstractCegarLoop]: Abstraction has 1552 states and 2282 transitions. [2024-11-10 02:11:39,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.25) internal successors, (258), 8 states have internal predecessors, (258), 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) [2024-11-10 02:11:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2282 transitions. [2024-11-10 02:11:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-10 02:11:39,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:11:39,179 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:11:39,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 02:11:39,179 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:11:39,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:11:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 495789799, now seen corresponding path program 1 times [2024-11-10 02:11:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:11:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127100469] [2024-11-10 02:11:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:11:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:42,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:11:42,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127100469] [2024-11-10 02:11:42,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127100469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:11:42,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:11:42,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 02:11:42,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408303827] [2024-11-10 02:11:42,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:11:42,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 02:11:42,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:11:42,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 02:11:42,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:11:42,692 INFO L87 Difference]: Start difference. First operand 1552 states and 2282 transitions. Second operand has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 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) [2024-11-10 02:11:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:11:42,919 INFO L93 Difference]: Finished difference Result 2467 states and 3625 transitions. [2024-11-10 02:11:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 02:11:42,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2024-11-10 02:11:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:11:42,923 INFO L225 Difference]: With dead ends: 2467 [2024-11-10 02:11:42,924 INFO L226 Difference]: Without dead ends: 1562 [2024-11-10 02:11:42,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:11:42,925 INFO L432 NwaCegarLoop]: 560 mSDtfsCounter, 494 mSDsluCounter, 2228 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 02:11:42,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 2788 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 02:11:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2024-11-10 02:11:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1562. [2024-11-10 02:11:42,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1561 states have (on average 1.4695707879564381) internal successors, (2294), 1561 states have internal predecessors, (2294), 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) [2024-11-10 02:11:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2294 transitions. [2024-11-10 02:11:42,946 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2294 transitions. Word has length 258 [2024-11-10 02:11:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:11:42,947 INFO L471 AbstractCegarLoop]: Abstraction has 1562 states and 2294 transitions. [2024-11-10 02:11:42,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.857142857142854) internal successors, (258), 7 states have internal predecessors, (258), 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) [2024-11-10 02:11:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2294 transitions. [2024-11-10 02:11:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-10 02:11:42,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:11:42,950 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:11:42,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 02:11:42,951 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:11:42,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:11:42,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1378456502, now seen corresponding path program 1 times [2024-11-10 02:11:42,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:11:42,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658444558] [2024-11-10 02:11:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:42,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:11:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:46,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:11:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658444558] [2024-11-10 02:11:46,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658444558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:11:46,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:11:46,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 02:11:46,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873162604] [2024-11-10 02:11:46,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:11:46,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 02:11:46,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:11:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 02:11:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 02:11:46,670 INFO L87 Difference]: Start difference. First operand 1562 states and 2294 transitions. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 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) [2024-11-10 02:11:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:11:46,917 INFO L93 Difference]: Finished difference Result 2471 states and 3628 transitions. [2024-11-10 02:11:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 02:11:46,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 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 259 [2024-11-10 02:11:46,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:11:46,922 INFO L225 Difference]: With dead ends: 2471 [2024-11-10 02:11:46,922 INFO L226 Difference]: Without dead ends: 1568 [2024-11-10 02:11:46,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 02:11:46,925 INFO L432 NwaCegarLoop]: 565 mSDtfsCounter, 487 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 02:11:46,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1689 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 02:11:46,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2024-11-10 02:11:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1568. [2024-11-10 02:11:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.4690491384811741) internal successors, (2302), 1567 states have internal predecessors, (2302), 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) [2024-11-10 02:11:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2302 transitions. [2024-11-10 02:11:46,953 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2302 transitions. Word has length 259 [2024-11-10 02:11:46,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:11:46,953 INFO L471 AbstractCegarLoop]: Abstraction has 1568 states and 2302 transitions. [2024-11-10 02:11:46,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 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) [2024-11-10 02:11:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2302 transitions. [2024-11-10 02:11:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-10 02:11:46,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:11:46,958 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:11:46,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 02:11:46,958 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:11:46,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:11:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash -425502907, now seen corresponding path program 1 times [2024-11-10 02:11:46,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:11:46,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394585365] [2024-11-10 02:11:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:11:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:51,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:11:51,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394585365] [2024-11-10 02:11:51,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394585365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:11:51,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:11:51,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 02:11:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397935029] [2024-11-10 02:11:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:11:51,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 02:11:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:11:51,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 02:11:51,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:11:51,319 INFO L87 Difference]: Start difference. First operand 1568 states and 2302 transitions. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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) [2024-11-10 02:11:51,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:11:51,731 INFO L93 Difference]: Finished difference Result 2496 states and 3661 transitions. [2024-11-10 02:11:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 02:11:51,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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 259 [2024-11-10 02:11:51,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:11:51,740 INFO L225 Difference]: With dead ends: 2496 [2024-11-10 02:11:51,740 INFO L226 Difference]: Without dead ends: 1584 [2024-11-10 02:11:51,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 02:11:51,742 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 494 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 02:11:51,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 2404 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 02:11:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2024-11-10 02:11:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1574. [2024-11-10 02:11:51,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1573 states have (on average 1.4685314685314685) internal successors, (2310), 1573 states have internal predecessors, (2310), 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) [2024-11-10 02:11:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2310 transitions. [2024-11-10 02:11:51,761 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2310 transitions. Word has length 259 [2024-11-10 02:11:51,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:11:51,762 INFO L471 AbstractCegarLoop]: Abstraction has 1574 states and 2310 transitions. [2024-11-10 02:11:51,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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) [2024-11-10 02:11:51,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2310 transitions. [2024-11-10 02:11:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-10 02:11:51,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:11:51,764 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:11:51,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 02:11:51,765 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:11:51,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:11:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash 619014023, now seen corresponding path program 1 times [2024-11-10 02:11:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:11:51,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903532801] [2024-11-10 02:11:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:51,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:11:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:52,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:11:52,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903532801] [2024-11-10 02:11:52,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903532801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:11:52,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:11:52,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 02:11:52,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102495031] [2024-11-10 02:11:52,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:11:52,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 02:11:52,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:11:52,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 02:11:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 02:11:52,570 INFO L87 Difference]: Start difference. First operand 1574 states and 2310 transitions. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 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) [2024-11-10 02:11:52,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:11:52,842 INFO L93 Difference]: Finished difference Result 2489 states and 3652 transitions. [2024-11-10 02:11:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 02:11:52,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 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 259 [2024-11-10 02:11:52,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:11:52,846 INFO L225 Difference]: With dead ends: 2489 [2024-11-10 02:11:52,846 INFO L226 Difference]: Without dead ends: 1582 [2024-11-10 02:11:52,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 02:11:52,848 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 662 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 02:11:52,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1469 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 02:11:52,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2024-11-10 02:11:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2024-11-10 02:11:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.4661606578115116) internal successors, (2318), 1581 states have internal predecessors, (2318), 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) [2024-11-10 02:11:52,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2318 transitions. [2024-11-10 02:11:52,872 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2318 transitions. Word has length 259 [2024-11-10 02:11:52,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:11:52,872 INFO L471 AbstractCegarLoop]: Abstraction has 1582 states and 2318 transitions. [2024-11-10 02:11:52,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 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) [2024-11-10 02:11:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2318 transitions. [2024-11-10 02:11:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-10 02:11:52,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:11:52,875 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:11:52,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 02:11:52,875 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:11:52,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:11:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash -965898169, now seen corresponding path program 1 times [2024-11-10 02:11:52,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:11:52,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476107225] [2024-11-10 02:11:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:52,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 02:11:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 02:11:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 02:11:57,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 02:11:57,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476107225] [2024-11-10 02:11:57,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476107225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 02:11:57,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 02:11:57,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-10 02:11:57,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652600320] [2024-11-10 02:11:57,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 02:11:57,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 02:11:57,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 02:11:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 02:11:57,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 02:11:57,206 INFO L87 Difference]: Start difference. First operand 1582 states and 2318 transitions. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 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) [2024-11-10 02:11:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 02:11:57,727 INFO L93 Difference]: Finished difference Result 2987 states and 4388 transitions. [2024-11-10 02:11:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 02:11:57,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 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 260 [2024-11-10 02:11:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 02:11:57,733 INFO L225 Difference]: With dead ends: 2987 [2024-11-10 02:11:57,733 INFO L226 Difference]: Without dead ends: 2076 [2024-11-10 02:11:57,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 02:11:57,736 INFO L432 NwaCegarLoop]: 834 mSDtfsCounter, 941 mSDsluCounter, 3296 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 4130 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-10 02:11:57,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 4130 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-10 02:11:57,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2024-11-10 02:11:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2030. [2024-11-10 02:11:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2029 states have (on average 1.472646623952686) internal successors, (2988), 2029 states have internal predecessors, (2988), 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) [2024-11-10 02:11:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2988 transitions. [2024-11-10 02:11:57,759 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2988 transitions. Word has length 260 [2024-11-10 02:11:57,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 02:11:57,759 INFO L471 AbstractCegarLoop]: Abstraction has 2030 states and 2988 transitions. [2024-11-10 02:11:57,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 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) [2024-11-10 02:11:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2988 transitions. [2024-11-10 02:11:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-10 02:11:57,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 02:11:57,762 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 02:11:57,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 02:11:57,763 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 02:11:57,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 02:11:57,763 INFO L85 PathProgramCache]: Analyzing trace with hash 866673397, now seen corresponding path program 1 times [2024-11-10 02:11:57,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 02:11:57,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235956107] [2024-11-10 02:11:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 02:11:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms